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Introduce setbtmac

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Dazzozo committed Jan 26, 2013
1 parent 9fc42cb commit bb15783a193c7b62521f894cad05baed604d28d5
Showing with 87 additions and 0 deletions.
  1. +27 −0 setbtmac/Android.mk
  2. +60 −0 setbtmac/setbtmac.c
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# Copyright (C) 2013 The CyanogenMod project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := setbtmac.c

LOCAL_PRELINK_MODULE := true
LOCAL_SHARED_LIBRARIES := libcutils
LOCAL_MODULE := setbtmac

include $(BUILD_EXECUTABLE)
@@ -0,0 +1,60 @@
/*
* Copyright (C) 2013 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#include <fcntl.h>
#include <string.h>
#include <cutils/log.h>
#include <cutils/properties.h>

static const char PROP_SERIALNO[] = "ro.serialno";
static const char PROP_BDADDR[] = "ro.bt.bdaddr_path";
static const char FILE_BDADDR[] = "/data/misc/bluetooth/.bdaddr";

void SetMAC(void);

int main()
{
SetMAC();
return 0;
}

void SetMAC(void)
{
char serialno[PROPERTY_VALUE_MAX];
char bdaddr[PROPERTY_VALUE_MAX];
int file;

/* The Bluetooth MAC address is the same as the device's serialno.
Use this as the Bluetooth stack introduced in 4.2 cannot get our
MAC address due to Huawei weirdness. */

property_get(PROP_SERIALNO, serialno, NULL);

sprintf(bdaddr, "%2.2s:%2.2s:%2.2s:%2.2s:%2.2s:%2.2s",
serialno, serialno+2, serialno+4,
serialno+6, serialno+8, serialno+10);
printf("%s\n", bdaddr);

file = open(FILE_BDADDR, O_WRONLY|O_CREAT|O_TRUNC, 00600|00060|00006);
if (file < 0)
{
ALOGE("Can't open %s\n", FILE_BDADDR);
}
write(file, bdaddr, strlen(bdaddr));
close(file);

property_set(PROP_BDADDR, FILE_BDADDR);
}

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