90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
|
/*
|
||
|
|
*
|
||
|
|
* BlueZ - Bluetooth protocol stack for Linux
|
||
|
|
*
|
||
|
|
* Copyright (C) 2013 Intel Corporation. All rights reserved.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* 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 <unistd.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/un.h>
|
||
|
|
|
||
|
|
#define PROPERTY_VALUE_MAX 32
|
||
|
|
|
||
|
|
#define BLUETOOTH_MODE_PROPERTY_NAME "persist.sys.bluetooth.mode"
|
||
|
|
|
||
|
|
static inline int property_get(const char *key, char *value,
|
||
|
|
const char *default_value)
|
||
|
|
{
|
||
|
|
const char *prop = NULL;
|
||
|
|
|
||
|
|
if (!strcmp(key, BLUETOOTH_MODE_PROPERTY_NAME))
|
||
|
|
prop = getenv("BLUETOOTH_MODE");
|
||
|
|
|
||
|
|
if (!prop)
|
||
|
|
prop = default_value;
|
||
|
|
|
||
|
|
if (prop) {
|
||
|
|
strncpy(value, prop, PROPERTY_VALUE_MAX);
|
||
|
|
|
||
|
|
value[PROPERTY_VALUE_MAX - 1] = '\0';
|
||
|
|
|
||
|
|
return strlen(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* property_set: returns 0 on success, < 0 on failure
|
||
|
|
*/
|
||
|
|
static inline int property_set(const char *key, const char *value)
|
||
|
|
{
|
||
|
|
static const char SYSTEM_SOCKET_PATH[] = "\0android_system";
|
||
|
|
|
||
|
|
struct sockaddr_un addr;
|
||
|
|
char msg[256];
|
||
|
|
int fd, len;
|
||
|
|
|
||
|
|
fd = socket(PF_LOCAL, SOCK_DGRAM, 0);
|
||
|
|
if (fd < 0)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
memset(&addr, 0, sizeof(addr));
|
||
|
|
addr.sun_family = AF_UNIX;
|
||
|
|
memcpy(addr.sun_path, SYSTEM_SOCKET_PATH, sizeof(SYSTEM_SOCKET_PATH));
|
||
|
|
|
||
|
|
if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
|
||
|
|
close(fd);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
len = snprintf(msg, sizeof(msg), "%s=%s", key, value);
|
||
|
|
|
||
|
|
if (send(fd, msg, len + 1, 0) < 0) {
|
||
|
|
close(fd);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
close(fd);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|