/* -*- mode: C; c-file-style: "gnu" -*- */

/* dbus-gobject.c Exporting a GObject remotely

 *

 * Copyright (C) 2003, 2004, 2005 Red Hat, Inc.

 * Copyright (C) 2005 Nokia

 * 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

 *

 */

#ifndef __SYMBIAN32__

#include <config.h>

#else

#include "config.h"

#endif //__SYMBIAN32__

#include <gobject/gvaluecollector.h>

#include <dbus/dbus-glib.h>

#include <dbus/dbus-glib-lowlevel.h>

#include "dbus-gtest.h"

#include "dbus-gutils.h"

#include "dbus-gobject.h"

#include "dbus-gsignature.h"

#include "dbus-gvalue.h"

#include "dbus-gmarshal.h"

#include "dbus-gvalue-utils.h"

#include <string.h>

#ifdef __SYMBIAN32__

#include "libdbus_glib_wsd_solution.h"

#endif

typedef struct

{

  char *default_iface;

  GType code_enum;

} DBusGErrorInfo;

#if EMULATOR

GET_STATIC_VAR_FROM_TLS(marshal_table,dbus_gobject,GHashTable *)

#define marshal_table (*GET_DBUS_WSD_VAR_NAME(marshal_table,dbus_gobject,s)())

GET_STATIC_VAR_FROM_TLS(error_metadata,dbus_gobject,GData *)

#define error_metadata (*GET_DBUS_WSD_VAR_NAME(error_metadata,dbus_gobject,s)())

GET_STATIC_VAR_FROM_TLS(globals_lock,dbus_gobject,GStaticRWLock )

#define globals_lock (*GET_DBUS_WSD_VAR_NAME(globals_lock,dbus_gobject,s)())

#else

static GStaticRWLock globals_lock = G_STATIC_RW_LOCK_INIT;

static GHashTable *marshal_table = NULL;

static GData *error_metadata = NULL;

#endif

static char*

uscore_to_wincaps (const char *uscore)

{

  const char *p;

  GString *str;

  gboolean last_was_uscore;

  last_was_uscore = TRUE;

  str = g_string_new (NULL);

  p = uscore;

  while (p && *p)

    {

      if (*p == '-' || *p == '_')

        {

          last_was_uscore = TRUE;

        }

      else

        {

          if (last_was_uscore)

            {

              g_string_append_c (str, g_ascii_toupper (*p));

              last_was_uscore = FALSE;

            }

          else

            g_string_append_c (str, *p);

        }

      ++p;

    }

  return g_string_free (str, FALSE);

}

static const char *

string_table_next (const char *table)

{

  return (table + (strlen (table) + 1));

}

static const char *

string_table_lookup (const char *table, int index)

{

  const char *ret;

  ret = table;

  while (index--)

    ret = string_table_next (ret);

  return ret;

}

static const char *

get_method_data (const DBusGObjectInfo *object,

		 const DBusGMethodInfo *method)

{

  return object->data + method->data_offset;

}

static char *

object_error_domain_prefix_from_object_info (const DBusGObjectInfo *info)

{

  /* FIXME */

  return NULL;

}

static char *

object_error_code_from_object_info (const DBusGObjectInfo *info, GQuark domain, gint code)

{

  /* FIXME */

  return NULL;

}

static const char *

method_interface_from_object_info (const DBusGObjectInfo *object,

			      const DBusGMethodInfo *method)

{

  return string_table_lookup (get_method_data (object, method), 0);

}

static const char *

method_name_from_object_info (const DBusGObjectInfo *object,

			      const DBusGMethodInfo *method)

{

  return string_table_lookup (get_method_data (object, method), 1);

}

static const char *

method_arg_info_from_object_info (const DBusGObjectInfo *object,

				  const DBusGMethodInfo *method)

{

  return string_table_lookup (get_method_data (object, method), 3);/*RB was 2*/

}

typedef enum

{

  RETVAL_NONE,    

  RETVAL_NOERROR,    

  RETVAL_ERROR

} RetvalType;

static const char *

arg_iterate (const char    *data,

	     const char   **name,

	     gboolean      *in,

	     gboolean      *constval,

	     RetvalType    *retval,

	     const char   **type)

{

  gboolean inarg;

  if (name)

    *name = data;

  data = string_table_next (data);

  switch (*data)

    {

    case 'I':

      inarg = TRUE;

      break;

    case 'O':

      inarg = FALSE;

      break;

    default:

      g_warning ("invalid arg direction '%c'", *data);

      inarg = FALSE;

      break;

    }

  if (in)

    *in = inarg;

  if (!inarg)

    {

      data = string_table_next (data);

      switch (*data)

	{

	case 'F':

	  if (constval)

	    *constval = FALSE;

	  break;

	case 'C':

	  if (constval)

	    *constval = TRUE;

	  break;

	default:

	  g_warning ("invalid arg const value '%c'", *data);

	  break;

	}

      data = string_table_next (data);

      switch (*data)

	{

	case 'N':

	  if (retval)

	    *retval = RETVAL_NONE;

	  break;

	case 'E':

	  if (retval)

	    *retval = RETVAL_ERROR;

	  break;

	case 'R':

	  if (retval)

	    *retval = RETVAL_NOERROR;

	  break;

	default:

	  g_warning ("invalid arg ret value '%c'", *data);

	  break;

	}

    }

  else

    {

      if (constval)

	*constval = FALSE;

      if (retval)

      #ifndef __SYMBIAN32__

      	*retval = FALSE;

      #else

	*retval = (RetvalType)FALSE;

	 #endif

    }

  data = string_table_next (data);

  if (type)

    *type = data;

  return string_table_next (data);

}

static char *

method_dir_signature_from_object_info (const DBusGObjectInfo *object,

				       const DBusGMethodInfo *method,

				       gboolean               in)

{

  const char *arg;

  GString *ret;

  arg = method_arg_info_from_object_info (object, method);

  ret = g_string_new (NULL);

  while (*arg)

    {

      const char *name;

      gboolean arg_in;

      const char *type;

      arg = arg_iterate (arg, &name, &arg_in, NULL, NULL, &type);

      if (arg_in == in)

	g_string_append (ret, type);

    }

  return g_string_free (ret, FALSE);

}

static char *

method_input_signature_from_object_info (const DBusGObjectInfo *object,

					 const DBusGMethodInfo *method)

{

  return method_dir_signature_from_object_info (object, method, TRUE);

}

static char *

method_output_signature_from_object_info (const DBusGObjectInfo *object,

					  const DBusGMethodInfo *method)

{

  return method_dir_signature_from_object_info (object, method, FALSE);

}

static const char *

propsig_iterate (const char *data, const char **iface, const char **name)

{

  *iface = data;

  data = string_table_next (data);

  *name = data;

  return string_table_next (data);

}

#if EMULATOR

GET_STATIC_VAR_FROM_TLS(quark,dbus_gobject,GQuark )

#define quark (*GET_DBUS_WSD_VAR_NAME(quark,dbus_gobject,s)())

#endif

static GQuark

dbus_g_object_type_dbus_metadata_quark (void)

{

#ifndef EMULATOR

  static GQuark quark;

#endif

  if (!quark)

    quark = g_quark_from_static_string ("DBusGObjectTypeDBusMetadataQuark");

  return quark;

}

static GList *

lookup_object_info (GObject *object)

{

  GType *interfaces, *p;

  GList *info_list = NULL;

  const DBusGObjectInfo *info;

  GType classtype;

  interfaces = g_type_interfaces (G_TYPE_FROM_INSTANCE (object), NULL);

  for (p = interfaces; *p != 0; p++)

    {

      info = g_type_get_qdata (*p, dbus_g_object_type_dbus_metadata_quark ());

      if (info != NULL && info->format_version >= 0)

          info_list = g_list_prepend (info_list, (gpointer) info);

    }

  g_free (interfaces);

  for (classtype = G_TYPE_FROM_INSTANCE (object); classtype != 0; classtype = g_type_parent (classtype))

    {

      info = g_type_get_qdata (classtype, dbus_g_object_type_dbus_metadata_quark ());

      if (info != NULL && info->format_version >= 0)

          info_list = g_list_prepend (info_list, (gpointer) info);

    }

  /* if needed only:

  return g_list_reverse (info_list);

  */

  return info_list;

}

static void

gobject_unregister_function (DBusConnection  *connection,

                             void            *user_data)

{

#ifdef WINSCW

  GObject *object;

  object = G_OBJECT (user_data);

#endif

  /* FIXME */

}

typedef struct

{

  GString *xml;

  GType gtype;

  const DBusGObjectInfo *object_info;

} DBusGLibWriteIterfaceData;

typedef struct

{

  GSList *methods;

  GSList *signals;

  GSList *properties;

} DBusGLibWriteInterfaceValues;

static void

write_interface (gpointer key, gpointer val, gpointer user_data)

{

  const char *name;

  GSList *methods;

  GSList *signals;

  GSList *properties;

  GString *xml;

  const DBusGObjectInfo *object_info;

  DBusGLibWriteIterfaceData *data;

  DBusGLibWriteInterfaceValues *values;

  name = key;

  values = val;

  methods = values->methods;

  signals = values->signals;

  properties = values->properties;

  data = user_data;

  xml = data->xml;

  object_info = data->object_info;

  g_string_append_printf (xml, "  <interface name=\"%s\">\n", name);

  /* FIXME: recurse to parent types ? */

  for (; methods; methods = methods->next)

    {

      DBusGMethodInfo *method;

      const char *args;

      method = methods->data;

      g_string_append_printf (xml, "    <method name=\"%s\">\n",

			      method_name_from_object_info (object_info, method));

      args = method_arg_info_from_object_info (object_info, method);

      while (*args)

	{

	  const char *name;

	  gboolean arg_in;

	  const char *type;

	  args = arg_iterate (args, &name, &arg_in, NULL, NULL, &type);

	  /* FIXME - handle container types */

	  g_string_append_printf (xml, "      <arg name=\"%s\" type=\"%s\" direction=\"%s\"/>\n",

				  name, type, arg_in ? "in" : "out");

	}

      g_string_append (xml, "    </method>\n");

    }

  g_slist_free (values->methods);

  for (; signals; signals = signals->next)

    {

      guint id;

      guint arg;

      const char *signame;

      GSignalQuery query;

      char *s;

      signame = signals->data;

      s = _dbus_gutils_wincaps_to_uscore (signame);

      id = g_signal_lookup (s, data->gtype);

      g_assert (id != 0);

      g_signal_query (id, &query);

      g_assert (query.return_type == G_TYPE_NONE);

      g_string_append_printf (xml, "    <signal name=\"%s\">\n", signame);

      for (arg = 0; arg < query.n_params; arg++)

	{

	  char *dbus_type = _dbus_gtype_to_signature (query.param_types[arg]);

	  g_assert (dbus_type != NULL);

          g_string_append (xml, "      <arg type=\"");

          g_string_append (xml, dbus_type);

          g_string_append (xml, "\"/>\n");

	  g_free (dbus_type);

	}

      g_string_append (xml, "    </signal>\n");

      g_free (s);

    }

  g_slist_free (values->signals);

  for (; properties; properties = properties->next)

    {

      const char *propname;

      GParamSpec *spec;

      char *dbus_type;

      gboolean can_set;

      gboolean can_get;

      char *s;

      propname = properties->data;

      spec = NULL;

      s = _dbus_gutils_wincaps_to_uscore (propname);

      spec = g_object_class_find_property (g_type_class_peek (data->gtype), s);

      g_assert (spec != NULL);

      g_free (s);

      dbus_type = _dbus_gtype_to_signature (G_PARAM_SPEC_VALUE_TYPE (spec));

      g_assert (dbus_type != NULL);

      can_set = ((spec->flags & G_PARAM_WRITABLE) != 0 &&

		 (spec->flags & G_PARAM_CONSTRUCT_ONLY) == 0);

      can_get = (spec->flags & G_PARAM_READABLE) != 0;

      if (can_set || can_get)

	{

	  g_string_append_printf (xml, "    <property name=\"%s\" ", propname);

	  g_string_append (xml, "type=\"");

	  g_string_append (xml, dbus_type);

	  g_string_append (xml, "\" access=\"");

	  if (can_set && can_get)

	    g_string_append (xml, "readwrite");

	  else if (can_get)

	    g_string_append (xml, "read");

	  else

	    {

	      g_assert (can_set);

	      g_string_append (xml, "write");

	    }

	  g_string_append (xml, "\"/>\n");

	}