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/* $Id$ */
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2004 Joe Marcus Clarke
Copyright 2006-2007 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio 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 of the License,
or (at your option) any later version.
PulseAudio 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 Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN_SYSTM_H
#include <netinet/in_systm.h>
#endif
#ifdef HAVE_NETINET_IP_H
#include <netinet/ip.h>
#endif
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifndef HAVE_INET_NTOP
#include "inet_ntop.h"
#endif
#include "winsock.h"
#include <pulse/xmalloc.h>
#include <pulsecore/core-error.h>
#include <pulsecore/core-util.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include "socket-util.h"
void pa_socket_peer_to_string(int fd, char *c, size_t l) {
struct stat st;
pa_assert(fd >= 0);
pa_assert(c);
pa_assert(l > 0);
#ifndef OS_IS_WIN32
pa_assert_se(fstat(fd, &st) == 0);
#endif
#ifndef OS_IS_WIN32
if (S_ISSOCK(st.st_mode)) {
#endif
union {
struct sockaddr sa;
struct sockaddr_in in;
struct sockaddr_in6 in6;
#ifdef HAVE_SYS_UN_H
struct sockaddr_un un;
#endif
} sa;
socklen_t sa_len = sizeof(sa);
if (getpeername(fd, &sa.sa, &sa_len) >= 0) {
if (sa.sa.sa_family == AF_INET) {
uint32_t ip = ntohl(sa.in.sin_addr.s_addr);
pa_snprintf(c, l, "TCP/IP client from %i.%i.%i.%i:%u",
ip >> 24,
(ip >> 16) & 0xFF,
(ip >> 8) & 0xFF,
ip & 0xFF,
ntohs(sa.in.sin_port));
return;
} else if (sa.sa.sa_family == AF_INET6) {
char buf[INET6_ADDRSTRLEN];
const char *res;
res = inet_ntop(AF_INET6, &sa.in6.sin6_addr, buf, sizeof(buf));
if (res) {
pa_snprintf(c, l, "TCP/IP client from [%s]:%u", buf, ntohs(sa.in6.sin6_port));
return;
}
#ifdef HAVE_SYS_UN_H
} else if (sa.sa.sa_family == AF_UNIX) {
pa_snprintf(c, l, "UNIX socket client");
return;
#endif
}
}
#ifndef OS_IS_WIN32
pa_snprintf(c, l, "Unknown network client");
return;
} else if (S_ISCHR(st.st_mode) && (fd == 0 || fd == 1)) {
pa_snprintf(c, l, "STDIN/STDOUT client");
return;
}
#endif /* OS_IS_WIN32 */
pa_snprintf(c, l, "Unknown client");
}
void pa_make_socket_low_delay(int fd) {
#ifdef SO_PRIORITY
int priority;
pa_assert(fd >= 0);
priority = 6;
if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, (void*)&priority, sizeof(priority)) < 0)
pa_log_warn("SO_PRIORITY failed: %s", pa_cstrerror(errno));
#endif
}
void pa_make_tcp_socket_low_delay(int fd) {
pa_assert(fd >= 0);
pa_make_socket_low_delay(fd);
#if defined(SOL_TCP) || defined(IPPROTO_TCP)
{
int on = 1;
#if defined(SOL_TCP)
if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (void*)&on, sizeof(on)) < 0)
#else
if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (void*)&on, sizeof(on)) < 0)
#endif
pa_log_warn("TCP_NODELAY failed: %s", pa_cstrerror(errno));
}
#endif
#if defined(IPTOS_LOWDELAY) && defined(IP_TOS) && (defined(SOL_IP) || defined(IPPROTO_IP))
{
int tos = IPTOS_LOWDELAY;
#ifdef SOL_IP
if (setsockopt(fd, SOL_IP, IP_TOS, (void*)&tos, sizeof(tos)) < 0)
#else
if (setsockopt(fd, IPPROTO_IP, IP_TOS, (void*)&tos, sizeof(tos)) < 0)
#endif
pa_log_warn("IP_TOS failed: %s", pa_cstrerror(errno));
}
#endif
}
void pa_make_udp_socket_low_delay(int fd) {
pa_assert(fd >= 0);
pa_make_socket_low_delay(fd);
#if defined(IPTOS_LOWDELAY) && defined(IP_TOS) && (defined(SOL_IP) || defined(IPPROTO_IP))
{
int tos = IPTOS_LOWDELAY;
#ifdef SOL_IP
if (setsockopt(fd, SOL_IP, IP_TOS, (void*)&tos, sizeof(tos)) < 0)
#else
if (setsockopt(fd, IPPROTO_IP, IP_TOS, (void*)&tos, sizeof(tos)) < 0)
#endif
pa_log_warn("IP_TOS failed: %s", pa_cstrerror(errno));
}
#endif
}
int pa_socket_set_rcvbuf(int fd, size_t l) {
pa_assert(fd >= 0);
if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (void*)&l, sizeof(l)) < 0) {
pa_log_warn("SO_RCVBUF: %s", pa_cstrerror(errno));
return -1;
}
return 0;
}
int pa_socket_set_sndbuf(int fd, size_t l) {
pa_assert(fd >= 0);
if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (void*)&l, sizeof(l)) < 0) {
pa_log("SO_SNDBUF: %s", pa_cstrerror(errno));
return -1;
}
return 0;
}
#ifdef HAVE_SYS_UN_H
int pa_unix_socket_is_stale(const char *fn) {
struct sockaddr_un sa;
int fd = -1, ret = -1;
pa_assert(fn);
if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
pa_log("socket(): %s", pa_cstrerror(errno));
goto finish;
}
sa.sun_family = AF_UNIX;
strncpy(sa.sun_path, fn, sizeof(sa.sun_path)-1);
sa.sun_path[sizeof(sa.sun_path) - 1] = 0;
if (connect(fd, (struct sockaddr*) &sa, sizeof(sa)) < 0) {
if (errno == ECONNREFUSED)
ret = 1;
} else
ret = 0;
finish:
if (fd >= 0)
pa_close(fd);
return ret;
}
int pa_unix_socket_remove_stale(const char *fn) {
int r;
pa_assert(fn);
if ((r = pa_unix_socket_is_stale(fn)) < 0)
return errno != ENOENT ? -1 : 0;
if (!r)
return 0;
/* Yes, here is a race condition. But who cares? */
if (unlink(fn) < 0)
return -1;
return 0;
}
#else /* HAVE_SYS_UN_H */
int pa_unix_socket_is_stale(const char *fn) {
return -1;
}
int pa_unix_socket_remove_stale(const char *fn) {
return -1;
}
#endif /* HAVE_SYS_UN_H */
pa_bool_t pa_socket_address_is_local(const struct sockaddr *sa) {
pa_assert(sa);
switch (sa->sa_family) {
case AF_UNIX:
return TRUE;
case AF_INET:
return ((const struct sockaddr_in*) sa)->sin_addr.s_addr == INADDR_LOOPBACK;
case AF_INET6:
return memcmp(&((const struct sockaddr_in6*) sa)->sin6_addr, &in6addr_loopback, sizeof(struct in6_addr)) == 0;
default:
return FALSE;
}
}
pa_bool_t pa_socket_is_local(int fd) {
union {
struct sockaddr sa;
struct sockaddr_in in;
struct sockaddr_in6 in6;
#ifdef HAVE_SYS_UN_H
struct sockaddr_un un;
#endif
} sa;
socklen_t sa_len = sizeof(sa);
if (getpeername(fd, &sa.sa, &sa_len) < 0)
return FALSE;
return pa_socket_address_is_local(&sa.sa);
}
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