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Add code from bluez/audio/ipc.[ch]

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João Paulo Rechi Vita 2008-07-31 20:15:32 -03:00 • committed by Lennart Poettering
parent ffe76a2daf
commit d8a0ec53da
2 changed files with 427 additions and 0 deletions
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119
src/modules/bt-ipc.c Normal file
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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2008 Marcel Holtmann <marcel@holtmann.org>
*
* This library 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.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "bt-ipc.h"
/* This table contains the string representation for messages */
static const char *strmsg[] = {
"BT_GETCAPABILITIES_REQ",
"BT_GETCAPABILITIES_RSP",
"BT_SETCONFIGURATION_REQ",
"BT_SETCONFIGURATION_RSP",
"BT_STREAMSTART_REQ",
"BT_STREAMSTART_RSP",
"BT_STREAMSTOP_REQ",
"BT_STREAMSTOP_RSP",
"BT_STREAMSUSPEND_IND",
"BT_STREAMRESUME_IND",
"BT_CONTROL_REQ",
"BT_CONTROL_RSP",
"BT_CONTROL_IND",
"BT_STREAMFD_IND",
};
int bt_audio_service_open()
{
int sk;
int err;
struct sockaddr_un addr = {
AF_UNIX, BT_IPC_SOCKET_NAME
};
sk = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sk < 0) {
err = errno;
fprintf(stderr, "%s: Cannot open socket: %s (%d)\n",
__FUNCTION__, strerror(err), err);
errno = err;
return -1;
}
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
err = errno;
fprintf(stderr, "%s: connect() failed: %s (%d)\n",
__FUNCTION__, strerror(err), err);
close(sk);
errno = err;
return -1;
}
return sk;
}
int bt_audio_service_close(int sk)
{
return close(sk);
}
int bt_audio_service_get_data_fd(int sk)
{
char cmsg_b[CMSG_SPACE(sizeof(int))], m;
int err, ret;
struct iovec iov = { &m, sizeof(m) };
struct msghdr msgh;
struct cmsghdr *cmsg;
memset(&msgh, 0, sizeof(msgh));
msgh.msg_iov = &iov;
msgh.msg_iovlen = 1;
msgh.msg_control = &cmsg_b;
msgh.msg_controllen = CMSG_LEN(sizeof(int));
ret = recvmsg(sk, &msgh, 0);
if (ret < 0) {
err = errno;
fprintf(stderr, "%s: Unable to receive fd: %s (%d)\n",
__FUNCTION__, strerror(err), err);
errno = err;
return -1;
}
/* Receive auxiliary data in msgh */
for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg != NULL;
cmsg = CMSG_NXTHDR(&msgh, cmsg)) {
if (cmsg->cmsg_level == SOL_SOCKET
&& cmsg->cmsg_type == SCM_RIGHTS)
return (*(int *) CMSG_DATA(cmsg));
}
errno = EINVAL;
return -1;
}
const char *bt_audio_strmsg(int type)
{
if (type < 0 || type > (sizeof(strmsg) / sizeof(strmsg[0])))
return NULL;
return strmsg[type];
}