gio/tests/gdbus-overflow.c

   1 /* GLib testing framework examples and tests
   2  *
   3  * Copyright (C) 2008-2010 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: David Zeuthen <davidz@redhat.com>
  19  */
  20
  21 #include "config.h"
  22
  23 #include <gio/gio.h>
  24 #include <unistd.h>
  25 #include <string.h>
  26
  27 /* for open(2) */
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <fcntl.h>
  31 #include <string.h>
  32
  33 /* for g_unlink() */
  34 #include <glib/gstdio.h>
  35
  36 #include <gio/gnetworking.h>
  37 #include <gio/gunixsocketaddress.h>
  38 #include <gio/gunixfdlist.h>
  39
  40 /* used in test_overflow */
  41 #ifdef G_OS_UNIX
  42 #include <gio/gunixconnection.h>
  43 #include <errno.h>
  44 #endif
  45
  46 #ifdef G_OS_UNIX
  47 static gboolean is_unix = TRUE;
  48 #else
  49 static gboolean is_unix = FALSE;
  50 #endif
  51
  52 static gchar *tmp_address = NULL;
  53 static gchar *test_guid = NULL;
  54 static GMainLoop *loop = NULL;
  55
  56 static const gchar *test_interface_introspection_xml =
  57   "<node>"
  58   "  <interface name='org.gtk.GDBus.PeerTestInterface'>"
  59   "    <method name='HelloPeer'>"
  60   "      <arg type='s' name='greeting' direction='in'/>"
  61   "      <arg type='s' name='response' direction='out'/>"
  62   "    </method>"
  63   "    <method name='EmitSignal'/>"
  64   "    <method name='EmitSignalWithNameSet'/>"
  65   "    <method name='OpenFile'>"
  66   "      <arg type='s' name='path' direction='in'/>"
  67   "    </method>"
  68   "    <signal name='PeerSignal'>"
  69   "      <arg type='s' name='a_string'/>"
  70   "    </signal>"
  71   "    <property type='s' name='PeerProperty' access='read'/>"
  72   "  </interface>"
  73   "</node>";
  74 static GDBusInterfaceInfo *test_interface_introspection_data = NULL;
  75
  76
  77 #ifdef G_OS_UNIX
  78
  79 /* Chosen to be big enough to overflow the socket buffer */
  80 #define OVERFLOW_NUM_SIGNALS 5000
  81 #define OVERFLOW_TIMEOUT_SEC 10
  82
  83 static GDBusMessage *
  84 overflow_filter_func (GDBusConnection *connection,
  85                       GDBusMessage    *message,
  86                       gboolean         incoming,
  87                       gpointer         user_data)
  88 {
  89   volatile gint *counter = user_data;
  90   *counter += 1;
  91   return message;
  92 }
  93
  94 static gboolean
  95 overflow_on_500ms_later_func (gpointer user_data)
  96 {
  97   g_main_loop_quit (loop);
  98   return FALSE; /* don't keep the idle */
  99 }
 100
 101 static void
 102 test_overflow (void)
 103 {
 104   gint sv[2];
 105   gint n;
 106   GSocket *socket;
 107   GSocketConnection *socket_connection;
 108   GDBusConnection *producer, *consumer;
 109   GError *error;
 110   GTimer *timer;
 111   volatile gint n_messages_received;
 112   volatile gint n_messages_sent;
 113
 114   g_assert_cmpint (socketpair (AF_UNIX, SOCK_STREAM, 0, sv), ==, 0);
 115
 116   error = NULL;
 117   socket = g_socket_new_from_fd (sv[0], &error);
 118   g_assert_no_error (error);
 119   socket_connection = g_socket_connection_factory_create_connection (socket);
 120   g_assert (socket_connection != NULL);
 121   g_object_unref (socket);
 122   producer = g_dbus_connection_new_sync (G_IO_STREAM (socket_connection),
 123                                          NULL, /* guid */
 124                                          G_DBUS_CONNECTION_FLAGS_NONE,
 125                                          NULL, /* GDBusAuthObserver */
 126                                          NULL, /* GCancellable */
 127
 128                                          &error);
 129   g_dbus_connection_set_exit_on_close (producer, TRUE);
 130   g_assert_no_error (error);
 131   g_object_unref (socket_connection);
 132   n_messages_sent = 0;
 133   g_dbus_connection_add_filter (producer, overflow_filter_func, (gpointer) &n_messages_sent, NULL);
 134
 135   /* send enough data that we get an EAGAIN */
 136   for (n = 0; n < OVERFLOW_NUM_SIGNALS; n++)
 137     {
 138       error = NULL;
 139       g_dbus_connection_emit_signal (producer,
 140                                      NULL, /* destination */
 141                                      "/org/foo/Object",
 142                                      "org.foo.Interface",
 143                                      "Member",
 144                                      g_variant_new ("(s)", "a string"),
 145                                      &error);
 146       g_assert_no_error (error);
 147     }
 148
 149   /* sleep for 0.5 sec (to allow the GDBus IO thread to fill up the
 150    * kernel buffers) and verify that n_messages_sent <
 151    * OVERFLOW_NUM_SIGNALS
 152    *
 153    * This is to verify that not all the submitted messages have been
 154    * sent to the underlying transport.
 155    */
 156   g_timeout_add (500, overflow_on_500ms_later_func, NULL);
 157   g_main_loop_run (loop);
 158   g_assert_cmpint (n_messages_sent, <, OVERFLOW_NUM_SIGNALS);
 159
 160   /* now suck it all out as a client, and add it up */
 161   socket = g_socket_new_from_fd (sv[1], &error);
 162   g_assert_no_error (error);
 163   socket_connection = g_socket_connection_factory_create_connection (socket);
 164   g_assert (socket_connection != NULL);
 165   g_object_unref (socket);
 166   consumer = g_dbus_connection_new_sync (G_IO_STREAM (socket_connection),
 167                                          NULL, /* guid */
 168                                          G_DBUS_CONNECTION_FLAGS_DELAY_MESSAGE_PROCESSING,
 169                                          NULL, /* GDBusAuthObserver */
 170                                          NULL, /* GCancellable */
 171                                          &error);
 172   g_assert_no_error (error);
 173   g_object_unref (socket_connection);
 174   n_messages_received = 0;
 175   g_dbus_connection_add_filter (consumer, overflow_filter_func, (gpointer) &n_messages_received, NULL);
 176   g_dbus_connection_start_message_processing (consumer);
 177
 178   timer = g_timer_new ();
 179   g_timer_start (timer);
 180
 181   while (n_messages_received < OVERFLOW_NUM_SIGNALS && g_timer_elapsed (timer, NULL) < OVERFLOW_TIMEOUT_SEC)
 182       g_main_context_iteration (NULL, FALSE);
 183
 184   g_assert_cmpint (n_messages_sent, ==, OVERFLOW_NUM_SIGNALS);
 185   g_assert_cmpint (n_messages_received, ==, OVERFLOW_NUM_SIGNALS);
 186
 187   g_timer_destroy (timer);
 188   g_object_unref (consumer);
 189   g_object_unref (producer);
 190 }
 191 #else
 192 static void
 193 test_overflow (void)
 194 {
 195   /* TODO: test this with e.g. GWin32InputStream/GWin32OutputStream */
 196 }
 197 #endif
 198
 199 /* ---------------------------------------------------------------------------------------------------- */
 200
 201
 202 int
 203 main (int   argc,
 204       char *argv[])
 205 {
 206   gint ret;
 207   GDBusNodeInfo *introspection_data = NULL;
 208   gchar *tmpdir = NULL;
 209
 210   g_test_init (&argc, &argv, NULL);
 211
 212   introspection_data = g_dbus_node_info_new_for_xml (test_interface_introspection_xml, NULL);
 213   g_assert (introspection_data != NULL);
 214   test_interface_introspection_data = introspection_data->interfaces[0];
 215
 216   test_guid = g_dbus_generate_guid ();
 217
 218   if (is_unix)
 219     {
 220       if (g_unix_socket_address_abstract_names_supported ())
 221         tmp_address = g_strdup ("unix:tmpdir=/tmp/gdbus-test-");
 222       else
 223         {
 224           tmpdir = g_dir_make_tmp ("gdbus-test-XXXXXX", NULL);
 225           tmp_address = g_strdup_printf ("unix:tmpdir=%s", tmpdir);
 226         }
 227     }
 228   else
 229     tmp_address = g_strdup ("nonce-tcp:");
 230
 231   /* all the tests rely on a shared main loop */
 232   loop = g_main_loop_new (NULL, FALSE);
 233
 234   g_test_add_func ("/gdbus/overflow", test_overflow);
 235
 236   ret = g_test_run();
 237
 238   g_main_loop_unref (loop);
 239   g_free (test_guid);
 240   g_dbus_node_info_unref (introspection_data);
 241   if (is_unix)
 242     g_free (tmp_address);
 243   if (tmpdir)
 244     {
 245       g_rmdir (tmpdir);
 246       g_free (tmpdir);
 247     }
 248
 249   return ret;
 250 }