dbus/tools/dbus-print-message.c

/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-print-message.h  Utility function to print out a message
 *
 * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
 * Copyright (C) 2003 Red Hat, Inc.
 *
 * 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 "dbus-print-message.h"

static const char*
type_to_name (int message_type)
{
  switch (message_type)
    {
    case DBUS_MESSAGE_TYPE_SIGNAL:
      return "signal";
    case DBUS_MESSAGE_TYPE_METHOD_CALL:
      return "method call";
    case DBUS_MESSAGE_TYPE_METHOD_RETURN:
      return "method return";
    case DBUS_MESSAGE_TYPE_ERROR:
      return "error";
    default:
      return "(unknown message type)";
    }
}

static void
print_iter (DBusMessageIter *iter, int depth)
{
  do
    {
      int type = dbus_message_iter_get_arg_type (iter);
      const char *str;
      dbus_uint32_t uint32;
      dbus_int32_t int32;
      double d;
      unsigned char byte;
      dbus_bool_t boolean;

      if (type == DBUS_TYPE_INVALID)
	break;

      while (depth-- > 0)
	putc (' ', stdout);

      switch (type)
	{
	case DBUS_TYPE_STRING:
          dbus_message_iter_get_basic (iter, &str);
	  printf ("string \"%s\"\n", str);
	  break;

	case DBUS_TYPE_INT32:
          dbus_message_iter_get_basic (iter, &int32);
	  printf ("int32 %d\n", int32);
	  break;

	case DBUS_TYPE_UINT32:
          dbus_message_iter_get_basic (iter, &uint32);
	  printf ("uint32 %u\n", uint32);
	  break;

	case DBUS_TYPE_DOUBLE:
	  dbus_message_iter_get_basic (iter, &d);
	  printf ("double %g\n", d);
	  break;

	case DBUS_TYPE_BYTE:
	  dbus_message_iter_get_basic (iter, &byte);
	  printf ("byte %d\n", byte);
	  break;

	case DBUS_TYPE_BOOLEAN:
          dbus_message_iter_get_basic (iter, &boolean);
	  printf ("boolean %s\n", boolean ? "true" : "false");
	  break;

	case DBUS_TYPE_VARIANT:
	  {
	    DBusMessageIter subiter;

	    dbus_message_iter_recurse (iter, &subiter);

	    printf ("variant:");
	    print_iter (&subiter, depth);
	    break;
	  }
	case DBUS_TYPE_ARRAY:
	  {
	    int current_type;
	    DBusMessageIter subiter;

	    dbus_message_iter_recurse (iter, &subiter);

	    printf("[");
	    while ((current_type = dbus_message_iter_get_arg_type (&subiter)) != DBUS_TYPE_INVALID)
	      {
		print_iter (&subiter, depth);
		dbus_message_iter_next (&subiter);
		if (dbus_message_iter_get_arg_type (&subiter) != DBUS_TYPE_INVALID)
		  printf (",");
	      }
	    printf("]");
	    break;
	  }
	case DBUS_TYPE_DICT_ENTRY:
	  {
	    DBusMessageIter subiter;

	    dbus_message_iter_recurse (iter, &subiter);

	    printf("{");
	    print_iter (&subiter, depth);
	    dbus_message_iter_next (&subiter);
	    print_iter (&subiter, depth);
	    printf("}");
	    break;
	  }
	    
	default:
	  printf (" (dbus-monitor too dumb to decipher arg type '%c')\n", type);
	  break;
	}
      
    } while (dbus_message_iter_next (iter));
}

void
print_message (DBusMessage *message)
{
  DBusMessageIter iter;
  const char *sender;
  const char *destination;
  int message_type;

  message_type = dbus_message_get_type (message);
  sender = dbus_message_get_sender (message);
  destination = dbus_message_get_destination (message);

  printf ("%s sender=%s -> dest=%s",
          type_to_name (message_type),
          sender ? sender : "(null sender)",
          destination ? destination : "(null destination)");
         
  switch (message_type)
    {
    case DBUS_MESSAGE_TYPE_METHOD_CALL:
    case DBUS_MESSAGE_TYPE_SIGNAL:
      printf (" interface=%s; member=%s\n",
              dbus_message_get_interface (message),
              dbus_message_get_member (message));
      break;
      
    case DBUS_MESSAGE_TYPE_METHOD_RETURN:
      printf ("\n");
      break;

    case DBUS_MESSAGE_TYPE_ERROR:
      printf (" error_name=%s\n",
              dbus_message_get_error_name (message));
      break;

    default:
      printf ("\n");
      break;
    }

  dbus_message_iter_init (message, &iter);
  print_iter (&iter, 1);
  
}