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display-spice.c

/*
 * Virt Viewer: A virtual machine console viewer
 *
 * Copyright (C) 2007-2009 Red Hat,
 * Copyright (C) 2009 Daniel P. Berrange
 * Copyright (C) 2010 Marc-André Lureau
 *
 * 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
 *
 * Author: Daniel P. Berrange <berrange@redhat.com>
 */

#include <spice-audio.h>
#include "util.h"
#include "display-spice.h"
#include "auth.h"

G_DEFINE_TYPE (VirtViewerDisplaySpice, virt_viewer_display_spice, VIRT_VIEWER_TYPE_DISPLAY)


static void _spice_close(VirtViewerDisplay* display);
static void _spice_send_keys(VirtViewerDisplay* display, const guint *keyvals, int nkeyvals);
static GdkPixbuf* _spice_get_pixbuf(VirtViewerDisplay* display);
static gboolean _spice_open_fd(VirtViewerDisplay* display, int fd);
static gboolean _spice_open_host(VirtViewerDisplay* display, char *host, char *port);
static gboolean _spice_channel_open_fd(VirtViewerDisplay* display, VirtViewerDisplayChannel* channel, int fd);


static void
virt_viewer_display_spice_class_init(VirtViewerDisplaySpiceClass *klass)
{
      VirtViewerDisplayClass *dclass = VIRT_VIEWER_DISPLAY_CLASS(klass);

      dclass->close = _spice_close;
      dclass->send_keys = _spice_send_keys;
      dclass->get_pixbuf = _spice_get_pixbuf;
      dclass->open_fd = _spice_open_fd;
      dclass->open_host = _spice_open_host;
      dclass->channel_open_fd = _spice_channel_open_fd;
}

static void
virt_viewer_display_spice_init(VirtViewerDisplaySpice *self G_GNUC_UNUSED)
{
}

static void _spice_send_keys(VirtViewerDisplay* display, const guint *keyvals, int nkeyvals)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_if_fail(self != NULL);
      g_return_if_fail(self->display != NULL);

      spice_display_send_keys(self->display, keyvals, nkeyvals, SPICE_DISPLAY_KEY_EVENT_CLICK);
}

static GdkPixbuf* _spice_get_pixbuf(VirtViewerDisplay* display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_val_if_fail(self != NULL, NULL);
      g_return_val_if_fail(self->display != NULL, NULL);

      return spice_display_get_pixbuf(self->display);
}

static void _spice_close(VirtViewerDisplay* display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_if_fail(self != NULL);

      if (self->session == NULL)
            return;

      spice_session_disconnect(self->session);

      if (self->session) /* let viewer_quit() be reentrant */
            g_object_unref(self->session);
      self->session = NULL;

      if (self->audio)
            g_object_unref(self->audio);
      self->audio = NULL;
}

static gboolean _spice_open_host(VirtViewerDisplay* display, char *host, char *port)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_val_if_fail(self != NULL, FALSE);
      g_return_val_if_fail(self->session != NULL, FALSE);

      g_object_set(self->session,
                 "host", host,
                 "port", port,
                 NULL);

      return spice_session_connect(self->session);
}

static gboolean _spice_open_fd(VirtViewerDisplay* display, int fd)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_val_if_fail(self != NULL, FALSE);

      return spice_session_open_fd(self->session, fd);
}

static gboolean _spice_channel_open_fd(VirtViewerDisplay* display,
                               VirtViewerDisplayChannel* channel, int fd)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_val_if_fail(self != NULL, FALSE);

      return spice_channel_open_fd(SPICE_CHANNEL(channel), fd);
}

static void _spice_channel_open_fd_request(SpiceChannel *channel,
                                           G_GNUC_UNUSED gint tls,
                                 VirtViewerDisplay *display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);

      g_return_if_fail(self != NULL);

      viewer_channel_open_fd(display->viewer, (VirtViewerDisplayChannel *)channel);
}

static void _spice_main_channel_event(G_GNUC_UNUSED SpiceChannel *channel,
                              SpiceChannelEvent event,
                              VirtViewerDisplay *display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);
      char *password = NULL;

      g_return_if_fail(self != NULL);
      g_return_if_fail(display->viewer != NULL);

      switch (event) {
      case SPICE_CHANNEL_OPENED:
            DEBUG_LOG("main channel: opened");
            break;
      case SPICE_CHANNEL_CLOSED:
            DEBUG_LOG("main channel: closed");
            viewer_quit(display->viewer);
            break;
      case SPICE_CHANNEL_ERROR_CONNECT:
            DEBUG_LOG("main channel: failed to connect");
            viewer_disconnected(display->viewer);
            break;
      case SPICE_CHANNEL_ERROR_AUTH:
            DEBUG_LOG("main channel: auth failure (wrong password?)");
            int ret = viewer_auth_collect_credentials("SPICE",
                                            display->viewer->pretty_address,
                                            NULL, &password);
            if (ret < 0) {
                  viewer_quit(display->viewer);
            } else {
                  g_object_set(self->session, "password", password, NULL);
                  spice_session_connect(self->session);
            }
            break;
      default:
            g_warning("unknown main channel event: %d", event);
            viewer_disconnected(display->viewer);
            break;
      }

      g_free(password);
}

static void _spice_channel_new(SpiceSession *s, SpiceChannel *channel,
                         VirtViewerDisplay *display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);
      int id;

      g_return_if_fail(self != NULL);

      g_signal_connect(channel, "open-fd",
                   G_CALLBACK(_spice_channel_open_fd_request), self);

      g_object_get(channel, "channel-id", &id, NULL);

      if (SPICE_IS_MAIN_CHANNEL(channel)) {
            g_signal_connect(channel, "channel-event",
                         G_CALLBACK(_spice_main_channel_event), self);
      }

      if (SPICE_IS_DISPLAY_CHANNEL(channel)) {
            DEBUG_LOG("new display channel (#%d)", id);
            if (display->widget != NULL)
                  return;
            self->display = spice_display_new(s, id);
            display->widget = GTK_WIDGET(self->display);
            g_object_set(self->display,
                       "grab-keyboard", TRUE,
                       "grab-mouse", TRUE,
                       "resize-guest", TRUE,
                       "auto-clipboard", TRUE,
                       NULL);
            viewer_add_display_and_realize(display->viewer);
            viewer_initialized(display->viewer);
      }

      if (SPICE_IS_INPUTS_CHANNEL(channel)) {
            DEBUG_LOG("new inputs channel");
      }

      if (SPICE_IS_PLAYBACK_CHANNEL(channel)) {
            DEBUG_LOG("new audio channel");
            if (self->audio != NULL)
                  return;
            self->audio = spice_audio_new(s, NULL, NULL);
      }
}

static void _spice_channel_destroy(G_GNUC_UNUSED SpiceSession *s, SpiceChannel *channel,
                           VirtViewerDisplay *display)
{
      VirtViewerDisplaySpice *self = VIRT_VIEWER_DISPLAY_SPICE(display);
      int id;

      g_return_if_fail(self != NULL);

      g_object_get(channel, "channel-id", &id, NULL);
      if (SPICE_IS_MAIN_CHANNEL(channel)) {
            DEBUG_LOG("zap main channel");
      }

      if (SPICE_IS_DISPLAY_CHANNEL(channel)) {
            DEBUG_LOG("zap display channel (#%d)", id);
      }

      if (SPICE_IS_PLAYBACK_CHANNEL(channel)) {
            if (self->audio == NULL)
                  return;
            DEBUG_LOG("zap audio channel");
      }
}

VirtViewerDisplaySpice* virt_viewer_display_spice_new(VirtViewer *viewer)
{
      VirtViewerDisplaySpice *self;
      VirtViewerDisplay *d;

      g_return_val_if_fail(viewer != NULL, NULL);

      self = g_object_new(VIRT_VIEWER_TYPE_DISPLAY_SPICE, NULL);
      d = VIRT_VIEWER_DISPLAY(self);
      d->viewer = viewer;
      d->need_align = FALSE;

      self->session = spice_session_new();
      g_signal_connect(self->session, "channel-new",
                   G_CALLBACK(_spice_channel_new), self);
      g_signal_connect(self->session, "channel-destroy",
                   G_CALLBACK(_spice_channel_destroy), self);

      return self;
}

/*
 * Local variables:
 *  c-indent-level: 8
 *  c-basic-offset: 8
 *  tab-width: 8
 * End:
 */

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