151 lines
3.6 KiB
C
151 lines
3.6 KiB
C
/*
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* Copyright (C) 2003-2010 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "socket_util.h"
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#include "fd_util.h"
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#include <errno.h>
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#include <unistd.h>
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#ifndef G_OS_WIN32
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#include <sys/socket.h>
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#include <netdb.h>
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#else /* G_OS_WIN32 */
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#define WINVER 0x0501
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#include <ws2tcpip.h>
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#include <winsock.h>
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#endif /* G_OS_WIN32 */
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#ifdef HAVE_IPV6
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#include <string.h>
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#endif
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static GQuark
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listen_quark(void)
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{
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return g_quark_from_static_string("listen");
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}
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char *
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sockaddr_to_string(const struct sockaddr *sa, size_t length, GError **error)
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{
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#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
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const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *)sa;
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struct sockaddr_in a4;
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#endif
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int ret;
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char host[NI_MAXHOST], serv[NI_MAXSERV];
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#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
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if (sa->sa_family == AF_INET6 &&
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IN6_IS_ADDR_V4MAPPED(&a6->sin6_addr)) {
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/* convert "::ffff:127.0.0.1" to "127.0.0.1" */
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memset(&a4, 0, sizeof(a4));
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a4.sin_family = AF_INET;
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memcpy(&a4.sin_addr, ((const char *)&a6->sin6_addr) + 12,
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sizeof(a4.sin_addr));
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a4.sin_port = a6->sin6_port;
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sa = (const struct sockaddr *)&a4;
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length = sizeof(a4);
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}
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#endif
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ret = getnameinfo(sa, length, host, sizeof(host), serv, sizeof(serv),
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NI_NUMERICHOST|NI_NUMERICSERV);
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if (ret != 0) {
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g_set_error(error, g_quark_from_static_string("netdb"), ret,
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"%s", gai_strerror(ret));
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return NULL;
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}
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#ifdef HAVE_UN
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if (sa->sa_family == AF_UNIX)
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/* "serv" contains corrupt information with unix
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sockets */
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return g_strdup(host);
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#endif
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#ifdef HAVE_IPV6
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if (strchr(host, ':') != NULL)
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return g_strconcat("[", host, "]:", serv, NULL);
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#endif
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return g_strconcat(host, ":", serv, NULL);
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}
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int
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socket_bind_listen(int domain, int type, int protocol,
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const struct sockaddr *address, size_t address_length,
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int backlog,
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GError **error)
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{
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int fd, ret;
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const int reuse = 1;
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#ifdef HAVE_STRUCT_UCRED
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int passcred = 1;
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#endif
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fd = socket_cloexec_nonblock(domain, type, protocol);
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if (fd < 0) {
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g_set_error(error, listen_quark(), errno,
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"Failed to create socket: %s", g_strerror(errno));
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return -1;
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}
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#ifdef WIN32
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const char *optval = (const char *)&reuse;
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#else
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const void *optval = &reuse;
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#endif
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ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
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optval, sizeof(reuse));
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if (ret < 0) {
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g_set_error(error, listen_quark(), errno,
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"setsockopt() failed: %s", g_strerror(errno));
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close_socket(fd);
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return -1;
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}
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ret = bind(fd, address, address_length);
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if (ret < 0) {
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g_set_error(error, listen_quark(), errno,
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"%s", g_strerror(errno));
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close_socket(fd);
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return -1;
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}
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ret = listen(fd, backlog);
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if (ret < 0) {
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g_set_error(error, listen_quark(), errno,
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"listen() failed: %s", g_strerror(errno));
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close_socket(fd);
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return -1;
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}
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#ifdef HAVE_STRUCT_UCRED
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setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &passcred, sizeof(passcred));
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#endif
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return fd;
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}
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