tools/certificate_tools_test.cpp

/*
 * Copyright (c) 2019-2022 ExpoLab, UC Davis
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "common/crypto/signature_verifier.h"

using namespace resdb;

CertificateInfo ReadData(const std::string& file_name) {
  int fd = open(file_name.c_str(), O_RDONLY, 0666);
  if (fd < 0) {
    printf("open file %s fail %s\n", file_name.c_str(), strerror(errno));
  }
  assert(fd >= 0);

  std::string res;
  int read_len = 0;
  char tmp[1024];
  while (true) {
    read_len = read(fd, tmp, sizeof(tmp));
    if (read_len <= 0) {
      break;
    }
    res.append(tmp, read_len);
  }
  close(fd);
  CertificateInfo info;
  assert(info.ParseFromString(res));
  return info;
}

KeyInfo ReadKey(const std::string& file_name) {
  int fd = open(file_name.c_str(), O_RDONLY, 0666);
  if (fd < 0) {
    printf("open file %s fail %s\n", file_name.c_str(), strerror(errno));
  }
  assert(fd >= 0);

  std::string res;
  int read_len = 0;
  char tmp[1024];
  while (true) {
    read_len = read(fd, tmp, sizeof(tmp));
    if (read_len <= 0) {
      break;
    }
    res.append(tmp, read_len);
  }
  close(fd);
  KeyInfo key;
  assert(key.ParseFromString(res));
  return key;
}

int main(int argc, char** argv) {
  std::string cert_path, private_key_path;
  if (argc < 2) {
    printf("<private key path> <cert path>\n");
    exit(0);
  }
  private_key_path = argv[1];
  cert_path = argv[2];

  // Read the private key.
  KeyInfo private_key = ReadKey(private_key_path);

  // Read the certificate.
  CertificateInfo info = ReadData(cert_path);

  // Get certificate using the key from administor.
  SignatureVerifier verifier(private_key, info);
  auto resp_info = verifier.VerifyKey(info.public_key().public_key_info(),
                                      info.public_key().certificate());
  assert(resp_info);
}