mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-02 09:01:46 -05:00
160 lines
3.4 KiB
C
160 lines
3.4 KiB
C
/***
|
|
This file is part of PulseAudio.
|
|
|
|
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 2.1 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 <errno.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
|
|
#include "winsock.h"
|
|
|
|
#include "pipe.h"
|
|
|
|
#ifndef HAVE_PIPE
|
|
|
|
static int set_block(int fd, int blocking) {
|
|
#ifdef O_NONBLOCK
|
|
|
|
int v;
|
|
|
|
assert(fd >= 0);
|
|
|
|
if ((v = fcntl(fd, F_GETFL)) < 0)
|
|
return -1;
|
|
|
|
if (blocking)
|
|
v &= ~O_NONBLOCK;
|
|
else
|
|
v |= O_NONBLOCK;
|
|
|
|
if (fcntl(fd, F_SETFL, v) < 0)
|
|
return -1;
|
|
|
|
return 0;
|
|
|
|
#elif defined(OS_IS_WIN32)
|
|
|
|
u_long arg;
|
|
|
|
arg = !blocking;
|
|
|
|
if (ioctlsocket(fd, FIONBIO, &arg) < 0)
|
|
return -1;
|
|
|
|
return 0;
|
|
|
|
#else
|
|
|
|
return -1;
|
|
|
|
#endif
|
|
}
|
|
|
|
int pipe(int filedes[2]) {
|
|
int listener;
|
|
struct sockaddr_in addr, peer;
|
|
socklen_t len;
|
|
|
|
listener = -1;
|
|
filedes[0] = -1;
|
|
filedes[1] = -1;
|
|
|
|
listener = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (listener < 0)
|
|
goto error;
|
|
|
|
filedes[0] = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (filedes[0] < 0)
|
|
goto error;
|
|
|
|
filedes[1] = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (filedes[1] < 0)
|
|
goto error;
|
|
|
|
/* Make non-blocking so that connect() won't block */
|
|
if (set_block(filedes[0], 0) < 0)
|
|
goto error;
|
|
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_port = 0;
|
|
addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
|
|
|
if (bind(listener, (struct sockaddr*)&addr, sizeof(addr)) < 0)
|
|
goto error;
|
|
|
|
if (listen(listener, 1) < 0)
|
|
goto error;
|
|
|
|
len = sizeof(addr);
|
|
if (getsockname(listener, (struct sockaddr*)&addr, &len) < 0)
|
|
goto error;
|
|
|
|
if (connect(filedes[0], (struct sockaddr*)&addr, sizeof(addr)) < 0) {
|
|
#ifdef OS_IS_WIN32
|
|
if (WSAGetLastError() != EWOULDBLOCK)
|
|
#else
|
|
if (errno != EINPROGRESS)
|
|
#endif
|
|
goto error;
|
|
}
|
|
|
|
len = sizeof(peer);
|
|
filedes[1] = accept(listener, (struct sockaddr*)&peer, &len);
|
|
if (filedes[1] < 0)
|
|
goto error;
|
|
|
|
/* Restore blocking */
|
|
if (set_block(filedes[0], 1) < 0)
|
|
goto error;
|
|
|
|
len = sizeof(addr);
|
|
if (getsockname(filedes[0], (struct sockaddr*)&addr, &len) < 0)
|
|
goto error;
|
|
|
|
/* Check that someone else didn't steal the connection */
|
|
if ((addr.sin_port != peer.sin_port) || (addr.sin_addr.s_addr != peer.sin_addr.s_addr))
|
|
goto error;
|
|
|
|
pa_close(listener);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
if (listener >= 0)
|
|
pa_close(listener);
|
|
if (filedes[0] >= 0)
|
|
pa_close(filedes[0]);
|
|
if (filedes[1] >= 0)
|
|
pa_close(filedes[0]);
|
|
|
|
return -1;
|
|
}
|
|
|
|
#endif /* HAVE_PIPE */
|