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authorDaniel P. Berrangé2018-05-02 16:40:33 +0200
committerDaniel P. Berrangé2019-02-26 16:25:58 +0100
commitfb5c4ebc0872e5f41634aec2f5a2cb5d83aefcd0 (patch)
treef5d26fc069216b70f6e756ce317ab1e4e2219e54 /authz
parentauthz: add QAuthZ object as an authorization base class (diff)
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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>
Diffstat (limited to 'authz')
-rw-r--r--authz/Makefile.objs1
-rw-r--r--authz/simple.c115
-rw-r--r--authz/trace-events3
3 files changed, 119 insertions, 0 deletions
diff --git a/authz/Makefile.objs b/authz/Makefile.objs
index 12597c9528..2a75d53840 100644
--- a/authz/Makefile.objs
+++ b/authz/Makefile.objs
@@ -1 +1,2 @@
authz-obj-y += base.o
+authz-obj-y += simple.o
diff --git a/authz/simple.c b/authz/simple.c
new file mode 100644
index 0000000000..8ab718803e
--- /dev/null
+++ b/authz/simple.c
@@ -0,0 +1,115 @@
+/*
+ * QEMU simple authorization driver
+ *
+ * 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 "authz/simple.h"
+#include "authz/trace.h"
+#include "qom/object_interfaces.h"
+
+static bool qauthz_simple_is_allowed(QAuthZ *authz,
+ const char *identity,
+ Error **errp)
+{
+ QAuthZSimple *sauthz = QAUTHZ_SIMPLE(authz);
+
+ trace_qauthz_simple_is_allowed(authz, sauthz->identity, identity);
+ return g_str_equal(identity, sauthz->identity);
+}
+
+static void
+qauthz_simple_prop_set_identity(Object *obj,
+ const char *value,
+ Error **errp G_GNUC_UNUSED)
+{
+ QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
+
+ g_free(sauthz->identity);
+ sauthz->identity = g_strdup(value);
+}
+
+
+static char *
+qauthz_simple_prop_get_identity(Object *obj,
+ Error **errp G_GNUC_UNUSED)
+{
+ QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
+
+ return g_strdup(sauthz->identity);
+}
+
+
+static void
+qauthz_simple_finalize(Object *obj)
+{
+ QAuthZSimple *sauthz = QAUTHZ_SIMPLE(obj);
+
+ g_free(sauthz->identity);
+}
+
+
+static void
+qauthz_simple_class_init(ObjectClass *oc, void *data)
+{
+ QAuthZClass *authz = QAUTHZ_CLASS(oc);
+
+ authz->is_allowed = qauthz_simple_is_allowed;
+
+ object_class_property_add_str(oc, "identity",
+ qauthz_simple_prop_get_identity,
+ qauthz_simple_prop_set_identity,
+ NULL);
+}
+
+
+QAuthZSimple *qauthz_simple_new(const char *id,
+ const char *identity,
+ Error **errp)
+{
+ return QAUTHZ_SIMPLE(
+ object_new_with_props(TYPE_QAUTHZ_SIMPLE,
+ object_get_objects_root(),
+ id, errp,
+ "identity", identity,
+ NULL));
+}
+
+
+static const TypeInfo qauthz_simple_info = {
+ .parent = TYPE_QAUTHZ,
+ .name = TYPE_QAUTHZ_SIMPLE,
+ .instance_size = sizeof(QAuthZSimple),
+ .instance_finalize = qauthz_simple_finalize,
+ .class_size = sizeof(QAuthZSimpleClass),
+ .class_init = qauthz_simple_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+
+static void
+qauthz_simple_register_types(void)
+{
+ type_register_static(&qauthz_simple_info);
+}
+
+
+type_init(qauthz_simple_register_types);
diff --git a/authz/trace-events b/authz/trace-events
index 481c90f511..1ef796c1e1 100644
--- a/authz/trace-events
+++ b/authz/trace-events
@@ -2,3 +2,6 @@
# authz/base.c
qauthz_is_allowed(void *authz, const char *identity, bool allowed) "AuthZ %p check identity=%s allowed=%d"
+
+# auth/simple.c
+qauthz_simple_is_allowed(void *authz, const char *wantidentity, const char *gotidentity) "AuthZ simple %p check want identity=%s got identity=%s"