// Copyright 2015 Luke Shumaker <lukeshu@sbcglobal.net>.
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// The GNU General Public License's references to "object code" and
// "executables" are to be interpreted to also include the output of
// any document formatting or typesetting system, including
// intermediate and printed output.
//
// This software 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this manual; if not, see
// <http://www.gnu.org/licenses/>.

package hackers_git

import "unsafe"

/*
#cgo LDFLAGS: -lcrypt
#define _GNU_SOURCE // for crypt_r(3) in crypt.h
#include <stdlib.h> // for free(3)
#include <crypt.h>  // for crypt_r(3)
#include <string.h> // for strcmp(3) and memset(3)
int check_password(const char *password, const char *hash)
{
  int ret;
  struct crypt_data data;
  data.initialized = 0;
  ret = (strcmp(crypt_r(password, hash, &data), hash) == 0);
  memset(&data, 0, sizeof(data));
  return ret;
}
*/
import "C"

func check_password(password string, hash string) bool {
	cpassword := C.CString(password)
	defer C.free(unsafe.Pointer(cpassword))
	chash := C.CString(hash)
	defer C.free(unsafe.Pointer(chash))
	return C.check_password(cpassword, chash) != 0
}