Add a command to call libnetutils' do_dhcp.

LOCAL_CFLAGS := -Werror

include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := dhcptool.c

LOCAL_SHARED_LIBRARIES := libnetutils

LOCAL_MODULE := dhcptool

LOCAL_MODULE_TAGS := debug

include $(BUILD_EXECUTABLE)

/*

 * Copyright 2015, 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.

 */

#include <errno.h>

#include <error.h>

#include <stdbool.h>

#include <stdlib.h>

#include <netutils/dhcp.h>

#include <netutils/ifc.h>

int main(int argc, char* argv[]) {

  if (argc != 2) {

    error(EXIT_FAILURE, 0, "usage: %s INTERFACE", argv[0]);

  }

  char* interface = argv[1];

  if (ifc_init()) {

    error(EXIT_FAILURE, errno, "dhcptool %s: ifc_init failed", interface);

  }

  int rc = do_dhcp(interface);

  if (rc) {

    error(0, errno, "dhcptool %s: do_dhcp failed", interface);

  }

  ifc_close();

  return rc ? EXIT_FAILURE : EXIT_SUCCESS;

}