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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "socket_util.h"
#include "fd_util.h"
#include <errno.h>
#include <unistd.h>
#ifndef G_OS_WIN32
#include <sys/socket.h>
#include <netdb.h>
#else /* G_OS_WIN32 */
#define WINVER 0x0501
#include <ws2tcpip.h>
#include <winsock.h>
#endif /* G_OS_WIN32 */
#ifdef HAVE_IPV6
#include <string.h>
#endif
static GQuark
listen_quark(void)
{
return g_quark_from_static_string("listen");
}
char *
sockaddr_to_string(const struct sockaddr *sa, size_t length, GError **error)
{
#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *)sa;
struct sockaddr_in a4;
#endif
int ret;
char host[NI_MAXHOST], serv[NI_MAXSERV];
#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
if (sa->sa_family == AF_INET6 &&
IN6_IS_ADDR_V4MAPPED(&a6->sin6_addr)) {
/* convert "::ffff:127.0.0.1" to "127.0.0.1" */
memset(&a4, 0, sizeof(a4));
a4.sin_family = AF_INET;
memcpy(&a4.sin_addr, ((const char *)&a6->sin6_addr) + 12,
sizeof(a4.sin_addr));
a4.sin_port = a6->sin6_port;
sa = (const struct sockaddr *)&a4;
length = sizeof(a4);
}
#endif
ret = getnameinfo(sa, length, host, sizeof(host), serv, sizeof(serv),
NI_NUMERICHOST|NI_NUMERICSERV);
if (ret != 0) {
g_set_error(error, g_quark_from_static_string("netdb"), ret,
"%s", gai_strerror(ret));
return NULL;
}
#ifdef HAVE_UN
if (sa->sa_family == AF_UNIX)
/* "serv" contains corrupt information with unix
sockets */
return g_strdup(host);
#endif
#ifdef HAVE_IPV6
if (strchr(host, ':') != NULL)
return g_strconcat("[", host, "]:", serv, NULL);
#endif
return g_strconcat(host, ":", serv, NULL);
}
int
socket_bind_listen(int domain, int type, int protocol,
const struct sockaddr *address, size_t address_length,
int backlog,
GError **error)
{
int fd, ret;
const int reuse = 1;
#ifdef HAVE_STRUCT_UCRED
int passcred = 1;
#endif
fd = socket_cloexec_nonblock(domain, type, protocol);
if (fd < 0) {
g_set_error(error, listen_quark(), errno,
"Failed to create socket: %s", g_strerror(errno));
return -1;
}
#ifdef WIN32
const char *optval = (const char *)&reuse;
#else
const void *optval = &reuse;
#endif
ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
optval, sizeof(reuse));
if (ret < 0) {
g_set_error(error, listen_quark(), errno,
"setsockopt() failed: %s", g_strerror(errno));
close(fd);
return -1;
}
ret = bind(fd, address, address_length);
if (ret < 0) {
g_set_error(error, listen_quark(), errno,
"%s", g_strerror(errno));
close(fd);
return -1;
}
ret = listen(fd, backlog);
if (ret < 0) {
g_set_error(error, listen_quark(), errno,
"listen() failed: %s", g_strerror(errno));
close(fd);
return -1;
}
#ifdef HAVE_STRUCT_UCRED
setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &passcred, sizeof(passcred));
#endif
return fd;
}
int
socket_keepalive(int fd)
{
const int reuse = 1;
#ifdef WIN32
const char *optval = (const char *)&reuse;
#else
const void *optval = &reuse;
#endif
return setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
optval, sizeof(reuse));
}
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