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/*
* Copyright 2020, The LineageOS 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define LOG_TAG "macplugin"
#include <log/log.h>
/*
* Yes, I know. But this is exactly how stock generates it...
*/
static const char WLAN_BDADDR_PATH[] = "/persist/wlan_mac.bin";
static int
set_wlan_mac(void)
{
int fd;
uint32_t addr;
char buf[80];
char *p;
fd = open(WLAN_BDADDR_PATH, O_WRONLY | O_CREAT | O_EXCL, 0600);
if (fd < 0) {
if (errno != EEXIST) {
return -1;
}
return 0;
}
ALOGI("Writing WLAN MAC file\n");
addr = rand();
p = buf;
p += sprintf(p, "Intf0MacAddress=02AA%08X\n", addr);
p += sprintf(p, "Intf1MacAddress=02CC%08X\n", addr);
p += sprintf(p, "END\n");
write(fd, buf, p - buf);
close(fd);
return 0;
}
int
main(void)
{
srand(time(NULL));
if (set_wlan_mac() != 0) {
ALOGE("Failed to set WLAN MAC\n");
}
return 0;
}
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