Add tests for pwqual modules and plugin ordering

Create a test module for the pwqual interface, and script to exercise
the built-in and test modules through kadmin.local.  Also create a
test harness to display the order of pwqual modules for the current
configuration, and use it to test the plugin module ordering
guarantees.

ticket: 7665

1 files changed, 95 insertions, 0 deletions

diff --git a/src/tests/plugorder.c b/src/tests/plugorder.c
new file mode 100644
index 0000000000..e13d210f65
--- /dev/null
+++ b/src/tests/plugorder.c
@@ -0,0 +1,95 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* tests/plugorder.c - Test harness to display the order of loaded plugins */
+/*
+ * Copyright (C) 2013 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This file registers a few dummy built-in pwqual modules, then prints out the
+ * order of pwqual modules returned by k5_plugin_load_all.  The choice of the
+ * pwqual interface is mostly arbitrary; it is an interface which libkrb5
+ * itself doesn't use, for which we have a test module.
+ */
+
+#include "k5-int.h"
+#include <krb5/pwqual_plugin.h>
+
+static krb5_context ctx;
+
+static void
+check(krb5_error_code code)
+{
+    const char *errmsg;
+
+    if (code) {
+        errmsg = krb5_get_error_message(ctx, code);
+        fprintf(stderr, "%s\n", errmsg);
+        krb5_free_error_message(ctx, errmsg);
+        exit(1);
+    }
+}
+
+static krb5_error_code
+blt1(krb5_context context, int maj_ver, int min_ver, krb5_plugin_vtable vtable)
+{
+    ((krb5_pwqual_vtable)vtable)->name = "blt1";
+    return 0;
+}
+
+static krb5_error_code
+blt2(krb5_context context, int maj_ver, int min_ver, krb5_plugin_vtable vtable)
+{
+    ((krb5_pwqual_vtable)vtable)->name = "blt2";
+    return 0;
+}
+
+static krb5_error_code
+blt3(krb5_context context, int maj_ver, int min_ver, krb5_plugin_vtable vtable)
+{
+    ((krb5_pwqual_vtable)vtable)->name = "blt3";
+    return 0;
+}
+
+int
+main()
+{
+    krb5_plugin_initvt_fn *modules = NULL, *mod;
+    struct krb5_pwqual_vtable_st vt;
+
+    check(krb5_init_context(&ctx));
+    check(k5_plugin_register(ctx, PLUGIN_INTERFACE_PWQUAL, "blt1", blt1));
+    check(k5_plugin_register(ctx, PLUGIN_INTERFACE_PWQUAL, "blt2", blt2));
+    check(k5_plugin_register(ctx, PLUGIN_INTERFACE_PWQUAL, "blt3", blt3));
+    check(k5_plugin_load_all(ctx, PLUGIN_INTERFACE_PWQUAL, &modules));
+    for (mod = modules; *mod != NULL; mod++) {
+        check((*mod)(ctx, 1, 1, (krb5_plugin_vtable)&vt));
+        printf("%s\n", vt.name);
+    }
+    return 0;
+}