RESPONDER: A sbus interface to reset negatively cached users and groups

Adds two new responder sbus interface functions: ResetNegcacheUsers and
ResetNegcacheGroups. These functions can be called by a Data Provider to
signal to a responder that it should drop its negative cache.

Reviewed-by: Pavel Březina <pbrezina@redhat.com>

6 files changed, 120 insertions, 0 deletions

diff --git a/src/responder/common/iface/responder_iface.c b/src/responder/common/iface/responder_iface.c
index f1e618b65..07fd1ff62 100644
--- a/src/responder/common/iface/responder_iface.c
+++ b/src/responder/common/iface/responder_iface.c
@@ -25,8 +25,15 @@ struct iface_responder_domain iface_responder_domain = {
     .SetInconsistent = sss_resp_domain_inconsistent,
 };
 
+struct iface_responder_ncache iface_responder_ncache = {
+    { &iface_responder_ncache_meta, 0 },
+    .ResetUsers = sss_resp_reset_ncache_users,
+    .ResetGroups = sss_resp_reset_ncache_groups,
+};
+
 static struct sbus_iface_map iface_map[] = {
     { RESPONDER_PATH, &iface_responder_domain.vtable },
+    { RESPONDER_PATH, &iface_responder_ncache.vtable },
     { NULL, NULL }
 };
 
diff --git a/src/responder/common/iface/responder_iface.h b/src/responder/common/iface/responder_iface.h
index abd7c83ce..5166b624c 100644
--- a/src/responder/common/iface/responder_iface.h
+++ b/src/responder/common/iface/responder_iface.h
@@ -34,4 +34,9 @@ int sss_resp_domain_inconsistent(struct sbus_request *req,
                                  void *data,
                                  const char *domain_name);
 
+/* org.freedesktop.sssd.Responder.NegativeCache */
+
+int sss_resp_reset_ncache_users(struct sbus_request *req, void *data);
+int sss_resp_reset_ncache_groups(struct sbus_request *req, void *data);
+
 #endif /* _RESPONDER_IFACE_H_ */
diff --git a/src/responder/common/iface/responder_iface.xml b/src/responder/common/iface/responder_iface.xml
index d3d0ff40e..9f092e00f 100644
--- a/src/responder/common/iface/responder_iface.xml
+++ b/src/responder/common/iface/responder_iface.xml
@@ -10,4 +10,10 @@
             <arg name="name" type="s" direction="in" />
         </method>
     </interface>
+
+    <interface name="org.freedesktop.sssd.Responder.NegativeCache">
+        <annotation value="iface_responder_ncache" name="org.freedesktop.DBus.GLib.CSymbol"/>
+        <method name="ResetUsers" />
+        <method name="ResetGroups" />
+    </interface>
 </node>
diff --git a/src/responder/common/iface/responder_iface_generated.c b/src/responder/common/iface/responder_iface_generated.c
index 1d59eafed..837e67cfd 100644
--- a/src/responder/common/iface/responder_iface_generated.c
+++ b/src/responder/common/iface/responder_iface_generated.c
@@ -61,6 +61,46 @@ const struct sbus_interface_meta iface_responder_domain_meta = {
     sbus_invoke_get_all, /* GetAll invoker */
 };
 
+int iface_responder_ncache_ResetUsers_finish(struct sbus_request *req)
+{
+   return sbus_request_return_and_finish(req,
+                                         DBUS_TYPE_INVALID);
+}
+
+int iface_responder_ncache_ResetGroups_finish(struct sbus_request *req)
+{
+   return sbus_request_return_and_finish(req,
+                                         DBUS_TYPE_INVALID);
+}
+
+/* methods for org.freedesktop.sssd.Responder.NegativeCache */
+const struct sbus_method_meta iface_responder_ncache__methods[] = {
+    {
+        "ResetUsers", /* name */
+        NULL, /* no in_args */
+        NULL, /* no out_args */
+        offsetof(struct iface_responder_ncache, ResetUsers),
+        NULL, /* no invoker */
+    },
+    {
+        "ResetGroups", /* name */
+        NULL, /* no in_args */
+        NULL, /* no out_args */
+        offsetof(struct iface_responder_ncache, ResetGroups),
+        NULL, /* no invoker */
+    },
+    { NULL, }
+};
+
+/* interface info for org.freedesktop.sssd.Responder.NegativeCache */
+const struct sbus_interface_meta iface_responder_ncache_meta = {
+    "org.freedesktop.sssd.Responder.NegativeCache", /* name */
+    iface_responder_ncache__methods,
+    NULL, /* no signals */
+    NULL, /* no properties */
+    sbus_invoke_get_all, /* GetAll invoker */
+};
+
 /* invokes a handler with a 's' DBus signature */
 static int invoke_s_method(struct sbus_request *dbus_req, void *function_ptr)
 {
diff --git a/src/responder/common/iface/responder_iface_generated.h b/src/responder/common/iface/responder_iface_generated.h
index e7f5c64fe..964f19b73 100644
--- a/src/responder/common/iface/responder_iface_generated.h
+++ b/src/responder/common/iface/responder_iface_generated.h
@@ -16,6 +16,11 @@
 #define IFACE_RESPONDER_DOMAIN_SETACTIVE "SetActive"
 #define IFACE_RESPONDER_DOMAIN_SETINCONSISTENT "SetInconsistent"
 
+/* constants for org.freedesktop.sssd.Responder.NegativeCache */
+#define IFACE_RESPONDER_NCACHE "org.freedesktop.sssd.Responder.NegativeCache"
+#define IFACE_RESPONDER_NCACHE_RESETUSERS "ResetUsers"
+#define IFACE_RESPONDER_NCACHE_RESETGROUPS "ResetGroups"
+
 /* ------------------------------------------------------------------------
  * DBus handlers
  *
@@ -47,6 +52,19 @@ int iface_responder_domain_SetActive_finish(struct sbus_request *req);
 /* finish function for SetInconsistent */
 int iface_responder_domain_SetInconsistent_finish(struct sbus_request *req);
 
+/* vtable for org.freedesktop.sssd.Responder.NegativeCache */
+struct iface_responder_ncache {
+    struct sbus_vtable vtable; /* derive from sbus_vtable */
+    int (*ResetUsers)(struct sbus_request *req, void *data);
+    int (*ResetGroups)(struct sbus_request *req, void *data);
+};
+
+/* finish function for ResetUsers */
+int iface_responder_ncache_ResetUsers_finish(struct sbus_request *req);
+
+/* finish function for ResetGroups */
+int iface_responder_ncache_ResetGroups_finish(struct sbus_request *req);
+
 /* ------------------------------------------------------------------------
  * DBus Interface Metadata
  *
@@ -60,4 +78,7 @@ int iface_responder_domain_SetInconsistent_finish(struct sbus_request *req);
 /* interface info for org.freedesktop.sssd.Responder.Domain */
 extern const struct sbus_interface_meta iface_responder_domain_meta;
 
+/* interface info for org.freedesktop.sssd.Responder.NegativeCache */
+extern const struct sbus_interface_meta iface_responder_ncache_meta;
+
 #endif /* __RESPONDER_IFACE_XML__ */
diff --git a/src/responder/common/iface/responder_ncache.c b/src/responder/common/iface/responder_ncache.c
new file mode 100644
index 000000000..c7aa0a3a4
--- /dev/null
+++ b/src/responder/common/iface/responder_ncache.c
@@ -0,0 +1,41 @@
+/*
+    Authors:
+        Pavel Březina <pbrezina@redhat.com>
+
+    Copyright (C) 2017 Red Hat
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "util/util.h"
+#include "sbus/sssd_dbus.h"
+#include "responder/common/responder.h"
+#include "responder/common/negcache.h"
+#include "responder/common/iface/responder_iface.h"
+
+int sss_resp_reset_ncache_users(struct sbus_request *req, void *data)
+{
+    struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
+
+    sss_ncache_reset_users(rctx->ncache);
+    return iface_responder_ncache_ResetUsers_finish(req);
+}
+
+int sss_resp_reset_ncache_groups(struct sbus_request *req, void *data)
+{
+    struct resp_ctx *rctx = talloc_get_type(data, struct resp_ctx);
+
+    sss_ncache_reset_groups(rctx->ncache);
+    return iface_responder_ncache_ResetGroups_finish(req);
+}