authz: add QAuthZSimple object type for easy whitelist auth checks

In many cases a single VM will just need to whitelist a single identity
as the allowed user of network services. This is especially the case for
TLS live migration (optionally with NBD storage) where we just need to
whitelist the x509 certificate distinguished name of the source QEMU
host.

Via QMP this can be configured with:

  {
    "execute": "object-add",
    "arguments": {
      "qom-type": "authz-simple",
      "id": "authz0",
      "props": {
        "identity": "fred"
      }
    }
  }

Or via the command line

  -object authz-simple,id=authz0,identity=fred

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

2 files changed, 53 insertions, 0 deletions

diff --git a/tests/Makefile.include b/tests/Makefile.include
index f15f4e88bc..691cd64fb5 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -116,6 +116,7 @@ endif
 check-unit-y += tests/test-timed-average$(EXESUF)
 check-unit-$(CONFIG_INOTIFY1) += tests/test-util-filemonitor$(EXESUF)
 check-unit-y += tests/test-util-sockets$(EXESUF)
+check-unit-y += tests/test-authz-simple$(EXESUF)
 check-unit-y += tests/test-io-task$(EXESUF)
 check-unit-y += tests/test-io-channel-socket$(EXESUF)
 check-unit-y += tests/test-io-channel-file$(EXESUF)
@@ -536,6 +537,7 @@ test-qapi-obj-y = tests/test-qapi-visit.o tests/test-qapi-types.o \
 benchmark-crypto-obj-y = $(crypto-obj-y) $(test-qom-obj-y)
 test-crypto-obj-y = $(crypto-obj-y) $(test-qom-obj-y)
 test-io-obj-y = $(io-obj-y) $(test-crypto-obj-y)
+test-authz-obj-y = $(test-qom-obj-y) $(authz-obj-y)
 test-block-obj-y = $(block-obj-y) $(test-io-obj-y) tests/iothread.o
 
 tests/check-qnum$(EXESUF): tests/check-qnum.o $(test-util-obj-y)
@@ -662,6 +664,7 @@ tests/test-util-filemonitor$(EXESUF): tests/test-util-filemonitor.o \
 	$(test-util-obj-y)
 tests/test-util-sockets$(EXESUF): tests/test-util-sockets.o \
 	tests/socket-helpers.o $(test-util-obj-y)
+tests/test-authz-simple$(EXESUF): tests/test-authz-simple.o $(test-authz-obj-y)
 tests/test-io-task$(EXESUF): tests/test-io-task.o $(test-io-obj-y)
 tests/test-io-channel-socket$(EXESUF): tests/test-io-channel-socket.o \
         tests/io-channel-helpers.o tests/socket-helpers.o $(test-io-obj-y)
diff --git a/tests/test-authz-simple.c b/tests/test-authz-simple.c
new file mode 100644
index 0000000000..2cf14fb87e
--- /dev/null
+++ b/tests/test-authz-simple.c
@@ -0,0 +1,50 @@
+/*
+ * QEMU simple authorization object testing
+ *
+ * Copyright (c) 2018 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+
+#include "authz/simple.h"
+
+
+static void test_authz_simple(void)
+{
+    QAuthZSimple *authz = qauthz_simple_new("authz0",
+                                            "cthulu",
+                                            &error_abort);
+
+    g_assert(!qauthz_is_allowed(QAUTHZ(authz), "cthul", &error_abort));
+    g_assert(qauthz_is_allowed(QAUTHZ(authz), "cthulu", &error_abort));
+    g_assert(!qauthz_is_allowed(QAUTHZ(authz), "cthuluu", &error_abort));
+    g_assert(!qauthz_is_allowed(QAUTHZ(authz), "fred", &error_abort));
+
+    object_unparent(OBJECT(authz));
+}
+
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+    module_call_init(MODULE_INIT_QOM);
+
+    g_test_add_func("/authz/simple", test_authz_simple);
+
+    return g_test_run();
+}