ofdbus/dbus/bus/driver.c
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ofdbus/dbus/bus/driver.c	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,1755 @@
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* driver.c  Bus client (driver)
+ *
+ * Copyright (C) 2003 CodeFactory AB
+ * Copyright (C) 2003, 2004, 2005 Red Hat, Inc.
+ * Portion Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
+ * Licensed under the Academic Free License version 2.1
+ * 
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "activation.h"
+#include "connection.h"
+#include "driver.h"
+#include "dispatch.h"
+#include "services.h"
+#include "selinux.h"
+#include "signals.h"
+#include "utils.h"
+#ifndef __SYMBIAN32__
+#include <dbus/dbus-string.h>
+#include <dbus/dbus-internals.h>
+#include <dbus/dbus-marshal-recursive.h>
+#else
+#include "dbus-string.h"
+#include "dbus-internals.h"
+#include "dbus-marshal-recursive.h"
+#endif //__SYMBIAN32__
+#include <string.h>
+
+static dbus_bool_t bus_driver_send_welcome_message (DBusConnection *connection,
+                                                    DBusMessage    *hello_message,
+                                                    BusTransaction *transaction,
+                                                    DBusError      *error);
+
+dbus_bool_t
+bus_driver_send_service_owner_changed (const char     *service_name,
+				       const char     *old_owner,
+				       const char     *new_owner,
+				       BusTransaction *transaction,
+				       DBusError      *error)
+{
+  DBusMessage *message;
+  dbus_bool_t retval;
+  const char *null_service;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  null_service = "";
+  _dbus_verbose ("sending name owner changed: %s [%s -> %s]\n",
+                 service_name, 
+                 old_owner ? old_owner : null_service, 
+                 new_owner ? new_owner : null_service);
+
+  message = dbus_message_new_signal (DBUS_PATH_DBUS,
+                                     DBUS_INTERFACE_DBUS,
+                                     "NameOwnerChanged");
+  
+  if (message == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  
+  if (!dbus_message_set_sender (message, DBUS_SERVICE_DBUS))
+    goto oom;
+
+  if (!dbus_message_append_args (message,
+                                 DBUS_TYPE_STRING, &service_name,
+                                 DBUS_TYPE_STRING, old_owner ? &old_owner : &null_service,
+                                 DBUS_TYPE_STRING, new_owner ? &new_owner : &null_service,
+                                 DBUS_TYPE_INVALID))
+    goto oom;
+
+  _dbus_assert (dbus_message_has_signature (message, "sss"));
+  
+  retval = bus_dispatch_matches (transaction, NULL, NULL, message, error);
+  dbus_message_unref (message);
+
+  return retval;
+
+ oom:
+  dbus_message_unref (message);
+  BUS_SET_OOM (error);
+  return FALSE;
+}
+
+dbus_bool_t
+bus_driver_send_service_lost (DBusConnection *connection,
+			      const char     *service_name,
+                              BusTransaction *transaction,
+                              DBusError      *error)
+{
+  DBusMessage *message;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  message = dbus_message_new_signal (DBUS_PATH_DBUS,
+                                     DBUS_INTERFACE_DBUS,
+                                     "NameLost");
+  
+  if (message == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  
+  if (!dbus_message_set_destination (message, bus_connection_get_name (connection)) ||
+      !dbus_message_append_args (message,
+                                 DBUS_TYPE_STRING, &service_name,
+                                 DBUS_TYPE_INVALID))
+    {
+      dbus_message_unref (message);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, message))
+    {
+      dbus_message_unref (message);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  else
+    {
+      dbus_message_unref (message);
+      return TRUE;
+    }
+}
+
+dbus_bool_t
+bus_driver_send_service_acquired (DBusConnection *connection,
+                                  const char     *service_name,
+                                  BusTransaction *transaction,
+                                  DBusError      *error)
+{
+  DBusMessage *message;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  message = dbus_message_new_signal (DBUS_PATH_DBUS,
+                                     DBUS_INTERFACE_DBUS,
+                                     "NameAcquired");
+
+  if (message == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  
+  if (!dbus_message_set_destination (message, bus_connection_get_name (connection)) ||
+      !dbus_message_append_args (message,
+                                 DBUS_TYPE_STRING, &service_name,
+                                 DBUS_TYPE_INVALID))
+    {
+      dbus_message_unref (message);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, message))
+    {
+      dbus_message_unref (message);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  else
+    {
+      dbus_message_unref (message);
+      return TRUE;
+    }
+}
+
+static dbus_bool_t
+create_unique_client_name (BusRegistry *registry,
+                           DBusString  *str)
+{
+  /* We never want to use the same unique client name twice, because
+   * we want to guarantee that if you send a message to a given unique
+   * name, you always get the same application. So we use two numbers
+   * for INT_MAX * INT_MAX combinations, should be pretty safe against
+   * wraparound.
+   */
+  /* FIXME these should be in BusRegistry rather than static vars */
+  static int next_major_number = 0;
+  static int next_minor_number = 0;
+  int len;
+  
+  len = _dbus_string_get_length (str);
+  
+  while (TRUE)
+    {
+      /* start out with 1-0, go to 1-1, 1-2, 1-3,
+       * up to 1-MAXINT, then 2-0, 2-1, etc.
+       */
+      if (next_minor_number <= 0)
+        {
+          next_major_number += 1;
+          next_minor_number = 0;
+          if (next_major_number <= 0)
+            _dbus_assert_not_reached ("INT_MAX * INT_MAX clients were added");
+        }
+
+      _dbus_assert (next_major_number > 0);
+      _dbus_assert (next_minor_number >= 0);
+
+      /* appname:MAJOR-MINOR */
+      
+      if (!_dbus_string_append (str, ":"))
+        return FALSE;
+      
+      if (!_dbus_string_append_int (str, next_major_number))
+        return FALSE;
+
+      if (!_dbus_string_append (str, "."))
+        return FALSE;
+      
+      if (!_dbus_string_append_int (str, next_minor_number))
+        return FALSE;
+
+      next_minor_number += 1;
+      
+      /* Check if a client with the name exists */
+      if (bus_registry_lookup (registry, str) == NULL)
+	break;
+
+      /* drop the number again, try the next one. */
+      _dbus_string_set_length (str, len);
+    }
+
+  return TRUE;
+}
+
+static dbus_bool_t
+bus_driver_handle_hello (DBusConnection *connection,
+                         BusTransaction *transaction,
+                         DBusMessage    *message,
+                         DBusError      *error)
+{
+  DBusString unique_name;
+  BusService *service;
+  dbus_bool_t retval;
+  BusRegistry *registry;
+  BusConnections *connections;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  if (bus_connection_is_active (connection))
+    {
+      /* We already handled an Hello message for this connection. */
+      dbus_set_error (error, DBUS_ERROR_FAILED,
+                      "Already handled an Hello message");
+      return FALSE;
+    }
+
+  /* Note that when these limits are exceeded we don't disconnect the
+   * connection; we just sort of leave it hanging there until it times
+   * out or disconnects itself or is dropped due to the max number of
+   * incomplete connections. It's even OK if the connection wants to
+   * retry the hello message, we support that.
+   */
+  connections = bus_connection_get_connections (connection);
+  if (!bus_connections_check_limits (connections, connection,
+                                     error))
+    {
+      _DBUS_ASSERT_ERROR_IS_SET (error);
+      return FALSE;
+    }
+  
+  if (!_dbus_string_init (&unique_name))
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  retval = FALSE;
+
+  registry = bus_connection_get_registry (connection);
+  
+  if (!create_unique_client_name (registry, &unique_name))
+    {
+      BUS_SET_OOM (error);
+      goto out_0;
+    }
+
+  if (!bus_connection_complete (connection, &unique_name, error))
+    {
+      _DBUS_ASSERT_ERROR_IS_SET (error);
+      goto out_0;
+    }
+  
+  if (!dbus_message_set_sender (message,
+                                bus_connection_get_name (connection)))
+    {
+      BUS_SET_OOM (error);
+      goto out_0;
+    }
+  
+  if (!bus_driver_send_welcome_message (connection, message, transaction, error))
+    goto out_0;
+
+  /* Create the service */
+  service = bus_registry_ensure (registry,
+                                 &unique_name, connection, 0, transaction, error);
+  if (service == NULL)
+    goto out_0;
+  
+  _dbus_assert (bus_connection_is_active (connection));
+  retval = TRUE;
+  
+ out_0:
+  _dbus_string_free (&unique_name);
+  return retval;
+}
+
+static dbus_bool_t
+bus_driver_send_welcome_message (DBusConnection *connection,
+                                 DBusMessage    *hello_message,
+                                 BusTransaction *transaction,
+                                 DBusError      *error)
+{
+  DBusMessage *welcome;
+  const char *name;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  name = bus_connection_get_name (connection);
+  _dbus_assert (name != NULL);
+  
+  welcome = dbus_message_new_method_return (hello_message);
+  if (welcome == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  
+  if (!dbus_message_append_args (welcome,
+                                 DBUS_TYPE_STRING, &name,
+                                 DBUS_TYPE_INVALID))
+    {
+      dbus_message_unref (welcome);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  _dbus_assert (dbus_message_has_signature (welcome, DBUS_TYPE_STRING_AS_STRING));
+  
+  if (!bus_transaction_send_from_driver (transaction, connection, welcome))
+    {
+      dbus_message_unref (welcome);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  else
+    {
+      dbus_message_unref (welcome);
+      return TRUE;
+    }
+}
+
+static dbus_bool_t
+bus_driver_handle_list_services (DBusConnection *connection,
+                                 BusTransaction *transaction,
+                                 DBusMessage    *message,
+                                 DBusError      *error)
+{
+  DBusMessage *reply;
+  int len;
+  char **services;
+  BusRegistry *registry;
+  int i;
+  DBusMessageIter iter;
+  DBusMessageIter sub;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  registry = bus_connection_get_registry (connection);
+  
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_registry_list_services (registry, &services, &len))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  dbus_message_iter_init_append (reply, &iter);
+  
+  if (!dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY,
+                                         DBUS_TYPE_STRING_AS_STRING,
+                                         &sub))
+    {
+      dbus_free_string_array (services);
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  {
+    /* Include the bus driver in the list */
+    const char *v_STRING = DBUS_SERVICE_DBUS;
+    if (!dbus_message_iter_append_basic (&sub, DBUS_TYPE_STRING,
+                                         &v_STRING))
+      {
+        dbus_free_string_array (services);
+        dbus_message_unref (reply);
+        BUS_SET_OOM (error);
+        return FALSE;
+      }
+  }
+  
+  i = 0;
+  while (i < len)
+    {
+      if (!dbus_message_iter_append_basic (&sub, DBUS_TYPE_STRING,
+                                           &services[i]))
+        {
+          dbus_free_string_array (services);
+          dbus_message_unref (reply);
+          BUS_SET_OOM (error);
+          return FALSE;
+        }
+      ++i;
+    }
+
+  dbus_free_string_array (services);
+
+  if (!dbus_message_iter_close_container (&iter, &sub))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  else
+    {
+      dbus_message_unref (reply);
+      return TRUE;
+    }
+}
+
+static dbus_bool_t
+bus_driver_handle_list_activatable_services (DBusConnection *connection,
+					     BusTransaction *transaction,
+					     DBusMessage    *message,
+					     DBusError      *error)
+{
+  DBusMessage *reply;
+  int len;
+  char **services;
+  BusActivation *activation;
+  int i;
+  DBusMessageIter iter;
+  DBusMessageIter sub;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  activation = bus_connection_get_activation (connection);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_activation_list_services (activation, &services, &len))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  dbus_message_iter_init_append (reply, &iter);
+
+  if (!dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY,
+					 DBUS_TYPE_STRING_AS_STRING,
+					 &sub))
+    {
+      dbus_free_string_array (services);
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  {
+    /* Include the bus driver in the list */
+    const char *v_STRING = DBUS_SERVICE_DBUS;
+    if (!dbus_message_iter_append_basic (&sub, DBUS_TYPE_STRING,
+					 &v_STRING))
+      {
+	dbus_free_string_array (services);
+	dbus_message_unref (reply);
+	BUS_SET_OOM (error);
+	return FALSE;
+      }
+  }
+
+  i = 0;
+  while (i < len)
+    {
+      if (!dbus_message_iter_append_basic (&sub, DBUS_TYPE_STRING,
+					   &services[i]))
+	{
+	  dbus_free_string_array (services);
+	  dbus_message_unref (reply);
+	  BUS_SET_OOM (error);
+	  return FALSE;
+	}
+      ++i;
+    }
+
+  dbus_free_string_array (services);
+
+  if (!dbus_message_iter_close_container (&iter, &sub))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      dbus_message_unref (reply);
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+  else
+    {
+      dbus_message_unref (reply);
+      return TRUE;
+    }
+}
+
+static dbus_bool_t
+bus_driver_handle_acquire_service (DBusConnection *connection,
+                                   BusTransaction *transaction,
+                                   DBusMessage    *message,
+                                   DBusError      *error)
+{
+  DBusMessage *reply;
+  DBusString service_name;
+  const char *name;
+  dbus_uint32_t service_reply;
+  dbus_uint32_t flags;
+  dbus_bool_t retval;
+  BusRegistry *registry;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  registry = bus_connection_get_registry (connection);
+  
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &name,
+                              DBUS_TYPE_UINT32, &flags,
+                              DBUS_TYPE_INVALID))
+    return FALSE;
+  
+  _dbus_verbose ("Trying to own name %s with flags 0x%x\n", name, flags);
+  
+  retval = FALSE;
+  reply = NULL;
+
+  _dbus_string_init_const (&service_name, name);
+
+  if (!bus_registry_acquire_service (registry, connection,
+                                     &service_name, flags,
+                                     &service_reply, transaction,
+                                     error))
+    goto out;
+  
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!dbus_message_append_args (reply, DBUS_TYPE_UINT32, &service_reply, DBUS_TYPE_INVALID))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  retval = TRUE;
+  
+ out:
+  if (reply)
+    dbus_message_unref (reply);
+  return retval;
+} 
+
+static dbus_bool_t
+bus_driver_handle_release_service (DBusConnection *connection,
+                                   BusTransaction *transaction,
+                                   DBusMessage    *message,
+                                   DBusError      *error)
+{
+  DBusMessage *reply;
+  DBusString service_name;
+  const char *name;
+  dbus_uint32_t service_reply;
+  dbus_bool_t retval;
+  BusRegistry *registry;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &name,
+                              DBUS_TYPE_INVALID))
+    return FALSE;
+
+  _dbus_verbose ("Trying to release name %s\n", name);
+
+  retval = FALSE;
+  reply = NULL;
+
+  _dbus_string_init_const (&service_name, name);
+
+  if (!bus_registry_release_service (registry, connection,
+                                     &service_name, &service_reply,
+                                     transaction, error))
+    goto out;
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!dbus_message_append_args (reply, DBUS_TYPE_UINT32, &service_reply, DBUS_TYPE_INVALID))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  retval = TRUE;
+
+ out:
+  if (reply)
+    dbus_message_unref (reply);
+  return retval;
+}
+
+static dbus_bool_t
+bus_driver_handle_service_exists (DBusConnection *connection,
+                                  BusTransaction *transaction,
+                                  DBusMessage    *message,
+                                  DBusError      *error)
+{
+  DBusMessage *reply;
+  DBusString service_name;
+  BusService *service;
+  dbus_bool_t service_exists;
+  const char *name;
+  dbus_bool_t retval;
+  BusRegistry *registry;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  registry = bus_connection_get_registry (connection);
+  
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &name,
+                              DBUS_TYPE_INVALID))
+    return FALSE;
+
+  retval = FALSE;
+
+  if (strcmp (name, DBUS_SERVICE_DBUS) == 0)
+    {
+      service_exists = TRUE;
+    }
+  else
+    {
+      _dbus_string_init_const (&service_name, name);
+      service = bus_registry_lookup (registry, &service_name);
+      service_exists = service != NULL;
+    }
+  
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!dbus_message_append_args (reply,
+                                 DBUS_TYPE_BOOLEAN, &service_exists,
+                                 0))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      BUS_SET_OOM (error);
+      goto out;
+    }
+
+  retval = TRUE;
+  
+ out:
+  if (reply)
+    dbus_message_unref (reply);
+
+  return retval;
+}
+
+static dbus_bool_t
+bus_driver_handle_activate_service (DBusConnection *connection,
+                                    BusTransaction *transaction,
+                                    DBusMessage    *message,
+                                    DBusError      *error)
+{
+  dbus_uint32_t flags;
+  const char *name;
+  dbus_bool_t retval;
+  BusActivation *activation;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+  
+  activation = bus_connection_get_activation (connection);
+  
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &name,
+                              DBUS_TYPE_UINT32, &flags,
+                              DBUS_TYPE_INVALID))
+    {
+      _DBUS_ASSERT_ERROR_IS_SET (error);
+      _dbus_verbose ("No memory to get arguments to StartServiceByName\n");
+      return FALSE;
+    }
+
+  retval = FALSE;
+
+  if (!bus_activation_activate_service (activation, connection, transaction, FALSE,
+                                        message, name, error))
+    {
+      _DBUS_ASSERT_ERROR_IS_SET (error);
+      _dbus_verbose ("bus_activation_activate_service() failed\n");
+      goto out;
+    }
+
+  retval = TRUE;
+  
+ out:
+  return retval;
+}
+
+static dbus_bool_t
+send_ack_reply (DBusConnection *connection,
+                BusTransaction *transaction,
+                DBusMessage    *message,
+                DBusError      *error)
+{
+  DBusMessage *reply;
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_transaction_send_from_driver (transaction, connection, reply))
+    {
+      BUS_SET_OOM (error);
+      dbus_message_unref (reply);
+      return FALSE;
+    }
+
+  dbus_message_unref (reply);
+  
+  return TRUE;
+}
+
+static dbus_bool_t
+bus_driver_handle_add_match (DBusConnection *connection,
+                             BusTransaction *transaction,
+                             DBusMessage    *message,
+                             DBusError      *error)
+{
+  BusMatchRule *rule;
+  const char *text;
+  DBusString str;
+  BusMatchmaker *matchmaker;
+  
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  text = NULL;
+  rule = NULL;
+
+  if (bus_connection_get_n_match_rules (connection) >=
+      bus_context_get_max_match_rules_per_connection (bus_transaction_get_context (transaction)))
+    {
+      dbus_set_error (error, DBUS_ERROR_LIMITS_EXCEEDED,
+                      "Connection \"%s\" is not allowed to add more match rules "
+                      "(increase limits in configuration file if required)",
+                      bus_connection_is_active (connection) ?
+                      bus_connection_get_name (connection) :
+                      "(inactive)");
+      goto failed;
+    }
+  
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &text,
+                              DBUS_TYPE_INVALID))
+    {
+      _dbus_verbose ("No memory to get arguments to AddMatch\n");
+      goto failed;
+    }
+
+  _dbus_string_init_const (&str, text);
+
+  rule = bus_match_rule_parse (connection, &str, error);
+  if (rule == NULL)
+    goto failed;
+
+  matchmaker = bus_connection_get_matchmaker (connection);
+
+  if (!bus_matchmaker_add_rule (matchmaker, rule))
+    {
+      BUS_SET_OOM (error);
+      goto failed;
+    }
+
+  if (!send_ack_reply (connection, transaction,
+                       message, error))
+    {
+      bus_matchmaker_remove_rule (matchmaker, rule);
+      goto failed;
+    }
+  
+  bus_match_rule_unref (rule);
+  
+  return TRUE;
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (rule)
+    bus_match_rule_unref (rule);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_remove_match (DBusConnection *connection,
+                                BusTransaction *transaction,
+                                DBusMessage    *message,
+                                DBusError      *error)
+{
+  BusMatchRule *rule;
+  const char *text;
+  DBusString str;
+  BusMatchmaker *matchmaker;
+  
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  text = NULL;
+  rule = NULL;
+  
+  if (!dbus_message_get_args (message, error,
+                              DBUS_TYPE_STRING, &text,
+                              DBUS_TYPE_INVALID))
+    {
+      _dbus_verbose ("No memory to get arguments to RemoveMatch\n");
+      goto failed;
+    }
+
+  _dbus_string_init_const (&str, text);
+
+  rule = bus_match_rule_parse (connection, &str, error);
+  if (rule == NULL)
+    goto failed;
+
+  /* Send the ack before we remove the rule, since the ack is undone
+   * on transaction cancel, but rule removal isn't.
+   */
+  if (!send_ack_reply (connection, transaction,
+                       message, error))
+    goto failed;
+  
+  matchmaker = bus_connection_get_matchmaker (connection);
+
+  if (!bus_matchmaker_remove_rule_by_value (matchmaker, rule, error))
+    goto failed;
+
+  bus_match_rule_unref (rule);
+  
+  return TRUE;
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (rule)
+    bus_match_rule_unref (rule);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_get_service_owner (DBusConnection *connection,
+				     BusTransaction *transaction,
+				     DBusMessage    *message,
+				     DBusError      *error)
+{
+  const char *text;
+  const char *base_name;
+  DBusString str;
+  BusRegistry *registry;
+  BusService *service;
+  DBusMessage *reply;
+  
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  text = NULL;
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_STRING, &text,
+			       DBUS_TYPE_INVALID))
+      goto failed;
+
+  _dbus_string_init_const (&str, text);
+  service = bus_registry_lookup (registry, &str);
+  if (service == NULL &&
+      _dbus_string_equal_c_str (&str, DBUS_SERVICE_DBUS))
+    {
+      /* ORG_FREEDESKTOP_DBUS owns itself */
+      base_name = DBUS_SERVICE_DBUS;
+    }
+  else if (service == NULL)
+    {
+      dbus_set_error (error, 
+                      DBUS_ERROR_NAME_HAS_NO_OWNER,
+                      "Could not get owner of name '%s': no such name", text);
+      goto failed;
+    }
+  else
+    {
+      base_name = bus_connection_get_name (bus_service_get_primary_owners_connection (service));
+      if (base_name == NULL)
+        {
+          /* FIXME - how is this error possible? */
+          dbus_set_error (error,
+                          DBUS_ERROR_FAILED,
+                          "Could not determine unique name for '%s'", text);
+          goto failed;
+        }
+      _dbus_assert (*base_name == ':');      
+    }
+
+  _dbus_assert (base_name != NULL);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  if (! dbus_message_append_args (reply, 
+				  DBUS_TYPE_STRING, &base_name,
+				  DBUS_TYPE_INVALID))
+    goto oom;
+  
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_list_queued_owners (DBusConnection *connection,
+				      BusTransaction *transaction,
+				      DBusMessage    *message,
+				      DBusError      *error)
+{
+  const char *text;
+  DBusList *base_names;
+  DBusList *link;
+  DBusString str;
+  BusRegistry *registry;
+  BusService *service;
+  DBusMessage *reply;
+  DBusMessageIter iter, array_iter;
+  char *dbus_service_name = DBUS_SERVICE_DBUS;
+  
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  base_names = NULL;
+  text = NULL;
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_STRING, &text,
+			       DBUS_TYPE_INVALID))
+      goto failed;
+
+  _dbus_string_init_const (&str, text);
+  service = bus_registry_lookup (registry, &str);
+  if (service == NULL &&
+      _dbus_string_equal_c_str (&str, DBUS_SERVICE_DBUS))
+    {
+      /* ORG_FREEDESKTOP_DBUS owns itself */
+      if (! _dbus_list_append (&base_names, dbus_service_name))
+        goto oom;
+    }
+  else if (service == NULL)
+    {
+      dbus_set_error (error, 
+                      DBUS_ERROR_NAME_HAS_NO_OWNER,
+                      "Could not get owners of name '%s': no such name", text);
+      goto failed;
+    }
+  else
+    {
+      if (!bus_service_list_queued_owners (service, 
+                                           &base_names,
+                                           error))
+        goto failed;
+    }
+
+  _dbus_assert (base_names != NULL);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  dbus_message_iter_init_append (reply, &iter);
+  if (!dbus_message_iter_open_container (&iter,
+                                         DBUS_TYPE_ARRAY,
+                                         DBUS_TYPE_STRING_AS_STRING,
+                                         &array_iter))
+    goto oom;
+  
+  link = _dbus_list_get_first_link (&base_names);
+  while (link != NULL)
+    {
+      char *uname;
+
+      _dbus_assert (link->data != NULL);
+      uname = (char *)link->data;
+    
+      if (!dbus_message_iter_append_basic (&array_iter, 
+                                           DBUS_TYPE_STRING,
+                                           &uname))
+        goto oom;
+
+      link = _dbus_list_get_next_link (&base_names, link);
+    }
+
+  if (! dbus_message_iter_close_container (&iter, &array_iter))
+    goto oom;
+                                    
+ 
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+
+  if (base_names)
+    _dbus_list_clear (&base_names);
+
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_get_connection_unix_user (DBusConnection *connection,
+                                            BusTransaction *transaction,
+                                            DBusMessage    *message,
+                                            DBusError      *error)
+{
+  const char *service;
+  DBusString str;
+  BusRegistry *registry;
+  BusService *serv;
+  DBusConnection *conn;
+  DBusMessage *reply;
+  unsigned long uid;
+  dbus_uint32_t uid32;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  service = NULL;
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_STRING, &service,
+			       DBUS_TYPE_INVALID))
+      goto failed;
+
+  _dbus_verbose ("asked for UID of connection %s\n", service);
+
+  _dbus_string_init_const (&str, service);
+  serv = bus_registry_lookup (registry, &str);
+  if (serv == NULL)
+    {
+      dbus_set_error (error, 
+		      DBUS_ERROR_NAME_HAS_NO_OWNER,
+		      "Could not get UID of name '%s': no such name", service);
+      goto failed;
+    }
+
+  conn = bus_service_get_primary_owners_connection (serv);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  if (!dbus_connection_get_unix_user (conn, &uid))
+    {
+      dbus_set_error (error,
+                      DBUS_ERROR_FAILED,
+                      "Could not determine UID for '%s'", service);
+      goto failed;
+    }
+
+  uid32 = uid;
+  if (! dbus_message_append_args (reply,
+                                  DBUS_TYPE_UINT32, &uid32,
+                                  DBUS_TYPE_INVALID))
+    goto oom;
+
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_get_connection_unix_process_id (DBusConnection *connection,
+						  BusTransaction *transaction,
+						  DBusMessage    *message,
+						  DBusError      *error)
+{
+  const char *service;
+  DBusString str;
+  BusRegistry *registry;
+  BusService *serv;
+  DBusConnection *conn;
+  DBusMessage *reply;
+  unsigned long pid;
+  dbus_uint32_t pid32;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  service = NULL;
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_STRING, &service,
+			       DBUS_TYPE_INVALID))
+      goto failed;
+
+  _dbus_verbose ("asked for PID of connection %s\n", service);
+
+  _dbus_string_init_const (&str, service);
+  serv = bus_registry_lookup (registry, &str);
+  if (serv == NULL)
+    {
+      dbus_set_error (error, 
+		      DBUS_ERROR_NAME_HAS_NO_OWNER,
+		      "Could not get PID of name '%s': no such name", service);
+      goto failed;
+    }
+
+  conn = bus_service_get_primary_owners_connection (serv);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  if (!dbus_connection_get_unix_process_id (conn, &pid))
+    {
+      dbus_set_error (error,
+                      DBUS_ERROR_UNIX_PROCESS_ID_UNKNOWN,
+                      "Could not determine PID for '%s'", service);
+      goto failed;
+    }
+
+  pid32 = pid;
+  if (! dbus_message_append_args (reply,
+                                  DBUS_TYPE_UINT32, &pid32,
+                                  DBUS_TYPE_INVALID))
+    goto oom;
+
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_get_connection_selinux_security_context (DBusConnection *connection,
+							   BusTransaction *transaction,
+							   DBusMessage    *message,
+							   DBusError      *error)
+{
+  const char *service;
+  DBusString str;
+  BusRegistry *registry;
+  BusService *serv;
+  DBusConnection *conn;
+  DBusMessage *reply;
+  BusSELinuxID *context;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  registry = bus_connection_get_registry (connection);
+
+  service = NULL;
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_STRING, &service,
+			       DBUS_TYPE_INVALID))
+      goto failed;
+
+  _dbus_verbose ("asked for security context of connection %s\n", service);
+
+  _dbus_string_init_const (&str, service);
+  serv = bus_registry_lookup (registry, &str);
+  if (serv == NULL)
+    {
+      dbus_set_error (error, 
+		      DBUS_ERROR_NAME_HAS_NO_OWNER,
+		      "Could not get security context of name '%s': no such name", service);
+      goto failed;
+    }
+
+  conn = bus_service_get_primary_owners_connection (serv);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  context = bus_connection_get_selinux_id (conn);
+  if (!context)
+    {
+      dbus_set_error (error,
+                      DBUS_ERROR_SELINUX_SECURITY_CONTEXT_UNKNOWN,
+                      "Could not determine security context for '%s'", service);
+      goto failed;
+    }
+
+  if (! bus_selinux_append_context (reply, context, error))
+    goto failed;
+
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+  return FALSE;
+}
+
+static dbus_bool_t
+bus_driver_handle_reload_config (DBusConnection *connection,
+				 BusTransaction *transaction,
+				 DBusMessage    *message,
+				 DBusError      *error)
+{
+  BusContext *context;
+  DBusMessage *reply;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  reply = NULL;
+  
+  context = bus_connection_get_context (connection);
+  if (!bus_context_reload_config (context, error))
+    goto failed;
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+ failed:
+  _DBUS_ASSERT_ERROR_IS_SET (error);
+  if (reply)
+    dbus_message_unref (reply);
+  return FALSE;
+}
+
+/* For speed it might be useful to sort this in order of
+ * frequency of use (but doesn't matter with only a few items
+ * anyhow)
+ */
+struct
+{
+  const char *name;
+  const char *in_args;
+  const char *out_args;
+  dbus_bool_t (* handler) (DBusConnection *connection,
+                           BusTransaction *transaction,
+                           DBusMessage    *message,
+                           DBusError      *error);
+} message_handlers[] = {
+  { "RequestName",
+    DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_UINT32_AS_STRING,
+    DBUS_TYPE_UINT32_AS_STRING,
+    bus_driver_handle_acquire_service },
+  { "ReleaseName",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_UINT32_AS_STRING,
+    bus_driver_handle_release_service },
+  { "StartServiceByName",
+    DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_UINT32_AS_STRING,
+    DBUS_TYPE_UINT32_AS_STRING,
+    bus_driver_handle_activate_service },
+  { "Hello",
+    "",
+    DBUS_TYPE_STRING_AS_STRING,
+    bus_driver_handle_hello },
+  { "NameHasOwner",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_BOOLEAN_AS_STRING,
+    bus_driver_handle_service_exists },
+  { "ListNames",
+    "",
+    DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_STRING_AS_STRING,
+    bus_driver_handle_list_services },
+  { "ListActivatableNames",
+    "",
+    DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_STRING_AS_STRING,
+    bus_driver_handle_list_activatable_services },
+  { "AddMatch",
+    DBUS_TYPE_STRING_AS_STRING,
+    "",
+    bus_driver_handle_add_match },
+  { "RemoveMatch",
+    DBUS_TYPE_STRING_AS_STRING,
+    "",
+    bus_driver_handle_remove_match },
+  { "GetNameOwner",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_STRING_AS_STRING,
+    bus_driver_handle_get_service_owner },
+  { "ListQueuedOwners",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_STRING_AS_STRING,
+    bus_driver_handle_list_queued_owners },
+  { "GetConnectionUnixUser",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_UINT32_AS_STRING,
+    bus_driver_handle_get_connection_unix_user },
+  { "GetConnectionUnixProcessID",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_UINT32_AS_STRING,
+    bus_driver_handle_get_connection_unix_process_id },
+  { "GetConnectionSELinuxSecurityContext",
+    DBUS_TYPE_STRING_AS_STRING,
+    DBUS_TYPE_ARRAY_AS_STRING DBUS_TYPE_BYTE_AS_STRING,
+    bus_driver_handle_get_connection_selinux_security_context },
+  { "ReloadConfig",
+    "",
+    "",
+    bus_driver_handle_reload_config }
+};
+
+static dbus_bool_t
+write_args_for_direction (DBusString *xml,
+			  const char *signature,
+			  dbus_bool_t in)
+{
+  DBusTypeReader typereader;
+  DBusString sigstr;
+  int current_type;
+  
+  _dbus_string_init_const (&sigstr, signature);
+  _dbus_type_reader_init_types_only (&typereader, &sigstr, 0);
+      
+  while ((current_type = _dbus_type_reader_get_current_type (&typereader)) != DBUS_TYPE_INVALID)
+    {
+      const DBusString *subsig;
+      int start, len;
+
+      _dbus_type_reader_get_signature (&typereader, &subsig, &start, &len);
+      if (!_dbus_string_append_printf (xml, "      <arg direction=\"%s\" type=\"",
+				       in ? "in" : "out"))
+	goto oom;
+      if (!_dbus_string_append_len (xml,
+				    _dbus_string_get_const_data (subsig) + start,
+				    len))
+	goto oom;
+      if (!_dbus_string_append (xml, "\"/>\n"))
+	goto oom;
+
+      _dbus_type_reader_next (&typereader);
+    }
+  return TRUE;
+ oom:
+  return FALSE;
+}
+
+dbus_bool_t
+bus_driver_generate_introspect_string (DBusString *xml)
+{
+  int i;
+
+  if (!_dbus_string_append (xml, DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE))
+    return FALSE;
+  if (!_dbus_string_append (xml, "<node>\n"))
+    return FALSE;
+  if (!_dbus_string_append_printf (xml, "  <interface name=\"%s\">\n", DBUS_INTERFACE_INTROSPECTABLE))
+    return FALSE;
+  if (!_dbus_string_append (xml, "    <method name=\"Introspect\">\n"))
+    return FALSE;
+  if (!_dbus_string_append_printf (xml, "      <arg name=\"data\" direction=\"out\" type=\"%s\"/>\n", DBUS_TYPE_STRING_AS_STRING))
+    return FALSE;
+  if (!_dbus_string_append (xml, "    </method>\n"))
+    return FALSE;
+  if (!_dbus_string_append (xml, "  </interface>\n"))
+    return FALSE;
+
+  if (!_dbus_string_append_printf (xml, "  <interface name=\"%s\">\n",
+                                   DBUS_INTERFACE_DBUS))
+    return FALSE;
+
+  i = 0;
+  while (i < _DBUS_N_ELEMENTS (message_handlers))
+    {
+	  
+      if (!_dbus_string_append_printf (xml, "    <method name=\"%s\">\n",
+                                       message_handlers[i].name))
+        return FALSE;
+
+      if (!write_args_for_direction (xml, message_handlers[i].in_args, TRUE))
+	return FALSE;
+
+      if (!write_args_for_direction (xml, message_handlers[i].out_args, FALSE))
+	return FALSE;
+
+      if (!_dbus_string_append (xml, "    </method>\n"))
+	return FALSE;
+      
+      ++i;
+    }
+
+  if (!_dbus_string_append_printf (xml, "    <signal name=\"NameOwnerChanged\">\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "      <arg type=\"s\"/>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "      <arg type=\"s\"/>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "      <arg type=\"s\"/>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "    </signal>\n"))
+    return FALSE;
+
+
+
+  if (!_dbus_string_append_printf (xml, "    <signal name=\"NameLost\">\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "      <arg type=\"s\"/>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "    </signal>\n"))
+    return FALSE;
+
+
+
+  if (!_dbus_string_append_printf (xml, "    <signal name=\"NameAcquired\">\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "      <arg type=\"s\"/>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append_printf (xml, "    </signal>\n"))
+    return FALSE;
+
+  if (!_dbus_string_append (xml, "  </interface>\n"))
+    return FALSE;
+  
+  if (!_dbus_string_append (xml, "</node>\n"))
+    return FALSE;
+
+  return TRUE;
+}
+
+static dbus_bool_t
+bus_driver_handle_introspect (DBusConnection *connection,
+                              BusTransaction *transaction,
+                              DBusMessage    *message,
+                              DBusError      *error)
+{
+  DBusString xml;
+  DBusMessage *reply;
+  const char *v_STRING;
+
+  _dbus_verbose ("Introspect() on bus driver\n");
+  
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  reply = NULL;
+
+  if (! dbus_message_get_args (message, error,
+			       DBUS_TYPE_INVALID))
+    {
+      _DBUS_ASSERT_ERROR_IS_SET (error);
+      return FALSE;
+    }
+
+  if (!_dbus_string_init (&xml))
+    {
+      BUS_SET_OOM (error);
+      return FALSE;
+    }
+
+  if (!bus_driver_generate_introspect_string (&xml))
+    goto oom;
+
+  v_STRING = _dbus_string_get_const_data (&xml);
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    goto oom;
+
+  if (! dbus_message_append_args (reply,
+                                  DBUS_TYPE_STRING, &v_STRING,
+                                  DBUS_TYPE_INVALID))
+    goto oom;
+
+  if (! bus_transaction_send_from_driver (transaction, connection, reply))
+    goto oom;
+
+  dbus_message_unref (reply);
+  _dbus_string_free (&xml);
+
+  return TRUE;
+
+ oom:
+  BUS_SET_OOM (error);
+
+  if (reply)
+    dbus_message_unref (reply);
+
+  _dbus_string_free (&xml);
+  
+  return FALSE;
+}
+
+dbus_bool_t
+bus_driver_handle_message (DBusConnection *connection,
+                           BusTransaction *transaction,
+			   DBusMessage    *message,
+                           DBusError      *error)
+{
+  const char *name, *sender, *interface;
+  int i;
+
+  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+
+  if (dbus_message_get_type (message) != DBUS_MESSAGE_TYPE_METHOD_CALL)
+    {
+      _dbus_verbose ("Driver got a non-method-call message, ignoring\n");
+      return TRUE; /* we just ignore this */
+    }
+
+  if (dbus_message_is_method_call (message,
+                                   DBUS_INTERFACE_INTROSPECTABLE,
+                                   "Introspect"))
+    return bus_driver_handle_introspect (connection, transaction, message, error);
+  
+  interface = dbus_message_get_interface (message);
+  if (interface == NULL)
+    interface = DBUS_INTERFACE_DBUS;
+  
+  _dbus_assert (dbus_message_get_member (message) != NULL);
+  
+  name = dbus_message_get_member (message);
+  sender = dbus_message_get_sender (message);
+  
+  if (strcmp (interface,
+              DBUS_INTERFACE_DBUS) != 0)
+    {
+      _dbus_verbose ("Driver got message to unknown interface \"%s\"\n",
+                     interface);
+      goto unknown;
+    }
+  
+  _dbus_verbose ("Driver got a method call: %s\n",
+		 dbus_message_get_member (message));
+  
+  /* security checks should have kept this from getting here */
+  _dbus_assert (sender != NULL || strcmp (name, "Hello") == 0);
+  
+  i = 0;
+  while (i < _DBUS_N_ELEMENTS (message_handlers))
+    {
+      if (strcmp (message_handlers[i].name, name) == 0)
+        {
+          _dbus_verbose ("Found driver handler for %s\n", name);
+
+          if (!dbus_message_has_signature (message, message_handlers[i].in_args))
+            {
+              _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+              _dbus_verbose ("Call to %s has wrong args (%s, expected %s)\n",
+                             name, dbus_message_get_signature (message),
+                             message_handlers[i].in_args);
+              
+              dbus_set_error (error, DBUS_ERROR_INVALID_ARGS,
+                              "Call to %s has wrong args (%s, expected %s)\n",
+                              name, dbus_message_get_signature (message),
+                              message_handlers[i].in_args);
+              _DBUS_ASSERT_ERROR_IS_SET (error);
+              return FALSE;
+            }
+          
+          if ((* message_handlers[i].handler) (connection, transaction, message, error))
+            {
+              _DBUS_ASSERT_ERROR_IS_CLEAR (error);
+              _dbus_verbose ("Driver handler succeeded\n");
+              return TRUE;
+            }
+          else
+            {
+              _DBUS_ASSERT_ERROR_IS_SET (error);
+              _dbus_verbose ("Driver handler returned failure\n");
+              return FALSE;
+            }
+        }
+      
+      ++i;
+    }
+
+ unknown:
+  _dbus_verbose ("No driver handler for message \"%s\"\n",
+                 name);
+
+  dbus_set_error (error, DBUS_ERROR_UNKNOWN_METHOD,
+                  "%s does not understand message %s",
+                  DBUS_SERVICE_DBUS, name);
+  
+  return FALSE;
+}
+
+void
+bus_driver_remove_connection (DBusConnection *connection)
+{
+  /* FIXME 1.0 Does nothing for now, should unregister the connection
+   * with the bus driver.
+   */
+}