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/*
* gibber-util.c - Code for Gibber utility functions
* Copyright (C) 2007 Collabora Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "gibber-util.h"
void
gibber_normalize_address (struct sockaddr_storage *addr)
{
struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
if (s6->sin6_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED (&(s6->sin6_addr)))
{
/* Normalize to ipv4 address */
guint32 addr_big_endian;
guint16 port;
memcpy (&addr_big_endian, s6->sin6_addr.s6_addr + 12, 4);
port = s6->sin6_port;
s4->sin_family = AF_INET;
s4->sin_addr.s_addr = addr_big_endian;
s4->sin_port = port;
}
}
/* FIXME: this is a hack until we get the normalization of v6-in-v4
* addresses in GLib. See bgo#646082 */
GSocketAddress *
gibber_normalize_socket_address (GSocketAddress *addr)
{
struct sockaddr_storage ss;
if (g_socket_address_get_family (addr) != G_SOCKET_FAMILY_IPV6)
return addr;
if (!g_socket_address_to_native (addr, &ss, sizeof (ss), NULL))
return addr;
g_object_unref (addr);
gibber_normalize_address (&ss);
return g_socket_address_new_from_native (&ss, sizeof (ss));
}
/**
* gibber_strdiff:
* @left: The first string to compare (may be NULL)
* @right: The second string to compare (may be NULL)
*
* Return %TRUE if the given strings are different. Unlike #strcmp this
* function will handle null pointers, treating them as distinct from any
* string.
*
* Returns: %FALSE if @left and @right are both %NULL, or if
* neither is %NULL and both have the same contents; %TRUE otherwise
*/
gboolean
gibber_strdiff (const gchar *left, const gchar *right)
{
if ((NULL == left) != (NULL == right))
return TRUE;
else if (left == right)
return FALSE;
else
return (0 != strcmp (left, right));
}
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