/* * Copyright (C) 2003-2010 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 */ #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; } ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, 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; }