Change services identification mechanism

Let services identify themselves voiluntarily as the first operation
instead of polling from the monitor.
Also consolidate some common functions and make them available as monitor
helpers.

1 files changed, 5 insertions, 74 deletions

diff --git a/server/responder/nss/nsssrv.c b/server/responder/nss/nsssrv.c
index 418e2f9f6..e4b121bf2 100644
--- a/server/responder/nss/nsssrv.c
+++ b/server/responder/nss/nsssrv.c
@@ -30,11 +30,6 @@
 #include <sys/time.h>
 #include <errno.h>
 
-/* Needed for res_init() */
-#include <netinet/in.h>
-#include <arpa/nameser.h>
-#include <resolv.h>
-
 #include "popt.h"
 #include "util/util.h"
 #include "responder/nss/nsssrv.h"
@@ -52,16 +47,12 @@
 
 #define SSS_NSS_PIPE_NAME "nss"
 
-static int service_identity(DBusMessage *message, struct sbus_connection *conn);
-static int service_pong(DBusMessage *message, struct sbus_connection *conn);
 static int service_reload(DBusMessage *message, struct sbus_connection *conn);
-static int service_res_init(DBusMessage *message, struct sbus_connection *conn);
 
 struct sbus_method monitor_nss_methods[] = {
-    { MON_CLI_METHOD_IDENTITY, service_identity },
-    { MON_CLI_METHOD_PING, service_pong },
+    { MON_CLI_METHOD_PING, monitor_common_pong },
     { MON_CLI_METHOD_RELOAD, service_reload },
-    { MON_CLI_METHOD_RES_INIT, service_res_init },
+    { MON_CLI_METHOD_RES_INIT, monitor_common_res_init },
     { NULL, NULL }
 };
 
@@ -73,56 +64,6 @@ struct sbus_interface monitor_nss_interface = {
     NULL
 };
 
-static int service_identity(DBusMessage *message, struct sbus_connection *conn)
-{
-    dbus_uint16_t version = NSS_SBUS_SERVICE_VERSION;
-    const char *name = NSS_SBUS_SERVICE_NAME;
-    DBusMessage *reply;
-    dbus_bool_t ret;
-
-    DEBUG(4,("Sending ID reply: (%s,%d)\n",
-             name, version));
-
-    reply = dbus_message_new_method_return(message);
-    if (!reply) return ENOMEM;
-
-    ret = dbus_message_append_args(reply,
-                                   DBUS_TYPE_STRING, &name,
-                                   DBUS_TYPE_UINT16, &version,
-                                   DBUS_TYPE_INVALID);
-    if (!ret) {
-        dbus_message_unref(reply);
-        return EIO;
-    }
-
-    /* send reply back */
-    sbus_conn_send_reply(conn, reply);
-    dbus_message_unref(reply);
-
-    return EOK;
-}
-
-static int service_pong(DBusMessage *message, struct sbus_connection *conn)
-{
-    DBusMessage *reply;
-    dbus_bool_t ret;
-
-    reply = dbus_message_new_method_return(message);
-    if (!reply) return ENOMEM;
-
-    ret = dbus_message_append_args(reply, DBUS_TYPE_INVALID);
-    if (!ret) {
-        dbus_message_unref(reply);
-        return EIO;
-    }
-
-    /* send reply back */
-    sbus_conn_send_reply(conn, reply);
-    dbus_message_unref(reply);
-
-    return EOK;
-}
-
 static int service_reload(DBusMessage *message, struct sbus_connection *conn)
 {
     /* Monitor calls this function when we need to reload
@@ -131,19 +72,7 @@ static int service_reload(DBusMessage *message, struct sbus_connection *conn)
      */
 
     /* Send an empty reply to acknowledge receipt */
-    return service_pong(message, conn);
-}
-
-static int service_res_init(DBusMessage *message, struct sbus_connection *conn)
-{
-    int ret;
-
-    ret = res_init();
-    if(ret != 0) {
-        return EIO;
-    }
-
-    return service_pong(message, conn);
+    return monitor_common_pong(message, conn);
 }
 
 static int nss_get_config(struct nss_ctx *nctx,
@@ -303,6 +232,8 @@ int nss_process_init(TALLOC_CTX *mem_ctx,
                            nss_cmds,
                            SSS_NSS_SOCKET_NAME, NULL,
                            NSS_SRV_CONFIG,
+                           NSS_SBUS_SERVICE_NAME,
+                           NSS_SBUS_SERVICE_VERSION,
                            nss_dp_interface,
                            &monitor_nss_interface,
                            &nctx->rctx);