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/*
* This file is part of the Nice GLib ICE library.
*
* (C) 2006-2009 Collabora Ltd.
* Contact: Youness Alaoui
* (C) 2006-2009 Nokia Corporation. All rights reserved.
* Contact: Kai Vehmanen
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Nice GLib ICE library.
*
* The Initial Developers of the Original Code are Collabora Ltd and Nokia
* Corporation. All Rights Reserved.
*
* Contributors:
* Dafydd Harries, Collabora Ltd.
* Youness Alaoui, Collabora Ltd.
*
* Alternatively, the contents of this file may be used under the terms of the
* the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
* case the provisions of LGPL are applicable instead of those above. If you
* wish to allow use of your version of this file only under the terms of the
* LGPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the LGPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the LGPL.
*/
/*
* Implementation of UDP socket interface using Berkeley sockets. (See
* http://en.wikipedia.org/wiki/Berkeley_sockets.)
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include "udp-bsd.h"
#ifndef G_OS_WIN32
#include <unistd.h>
#endif
static void socket_close (NiceSocket *sock);
static gint socket_recv (NiceSocket *sock, NiceAddress *from,
guint len, gchar *buf);
static gboolean socket_send (NiceSocket *sock, const NiceAddress *to,
guint len, const gchar *buf);
static gboolean socket_is_reliable (NiceSocket *sock);
NiceSocket *
nice_udp_bsd_socket_new (NiceAddress *addr)
{
int sockfd = -1;
struct sockaddr_storage name;
socklen_t name_len = sizeof (name);
NiceSocket *sock = g_slice_new0 (NiceSocket);
#ifdef G_OS_WIN32
unsigned long set_nonblock=1;
#endif
if (addr != NULL) {
nice_address_copy_to_sockaddr(addr, (struct sockaddr *)&name);
} else {
memset (&name, 0, sizeof (name));
name.ss_family = AF_UNSPEC;
}
if (name.ss_family == AF_UNSPEC || name.ss_family == AF_INET) {
sockfd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
name.ss_family = AF_INET;
#ifdef HAVE_SA_LEN
name.ss_len = sizeof (struct sockaddr_in);
#endif
} else if (name.ss_family == AF_INET6) {
sockfd = socket (PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
name.ss_family = AF_INET6;
#ifdef HAVE_SA_LEN
name.ss_len = sizeof (struct sockaddr_in6);
#endif
}
if (sockfd == -1) {
g_slice_free (NiceSocket, sock);
return NULL;
}
#ifdef FD_CLOEXEC
fcntl (sockfd, F_SETFD, fcntl (sockfd, F_GETFD) | FD_CLOEXEC);
#endif
#ifdef O_NONBLOCK
fcntl (sockfd, F_SETFL, fcntl (sockfd, F_GETFL) | O_NONBLOCK);
#elif defined G_OS_WIN32
ioctlsocket(sockfd, FIONBIO, &set_nonblock);
#endif
if(bind (sockfd, (struct sockaddr *) &name,
name.ss_family == AF_INET? sizeof (struct sockaddr_in) :
sizeof(struct sockaddr_in6)) < 0) {
g_slice_free (NiceSocket, sock);
#ifdef G_OS_WIN32
closesocket(sockfd);
#else
close (sockfd);
#endif
return NULL;
}
name_len = name.ss_family == AF_INET? sizeof (struct sockaddr_in) :
sizeof(struct sockaddr_in6);
if (getsockname (sockfd, (struct sockaddr *) &name, &name_len) < 0) {
g_slice_free (NiceSocket, sock);
#ifdef G_OS_WIN32
closesocket(sockfd);
#else
close (sockfd);
#endif
return NULL;
}
nice_address_set_from_sockaddr (&sock->addr, (struct sockaddr *)&name);
sock->fileno = sockfd;
sock->send = socket_send;
sock->recv = socket_recv;
sock->is_reliable = socket_is_reliable;
sock->close = socket_close;
return sock;
}
static void
socket_close (NiceSocket *sock)
{
#ifdef G_OS_WIN32
closesocket(sock->fileno);
#else
close (sock->fileno);
#endif
}
static gint
socket_recv (NiceSocket *sock, NiceAddress *from, guint len, gchar *buf)
{
gint recvd;
struct sockaddr_storage sa;
socklen_t from_len = sizeof (sa);
recvd = recvfrom (sock->fileno, buf, len, 0, (struct sockaddr *) &sa,
&from_len);
if (recvd < 0) {
#ifdef G_OS_WIN32
if (WSAGetLastError () == WSAEWOULDBLOCK ||
WSAGetLastError () == WSAECONNRESET)
#else
if (errno == EAGAIN || errno == EWOULDBLOCK)
#endif
return 0;
}
if (recvd > 0)
nice_address_set_from_sockaddr (from, (struct sockaddr *)&sa);
return recvd;
}
static gboolean
socket_send (NiceSocket *sock, const NiceAddress *to,
guint len, const gchar *buf)
{
struct sockaddr_storage sa;
ssize_t sent;
nice_address_copy_to_sockaddr (to, (struct sockaddr *)&sa);
sent = sendto (sock->fileno, buf, len, 0, (struct sockaddr *) &sa,
sa.ss_family == AF_INET? sizeof (struct sockaddr_in) :
sizeof(struct sockaddr_in6));
return sent == (ssize_t)len;
}
static gboolean
socket_is_reliable (NiceSocket *sock)
{
return FALSE;
}
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