util/fipstools/acvp/modulewrapper/main.cc

/* Copyright (c) 2021, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <stdio.h>
#include <string>
#include <unistd.h>

#include <openssl/span.h>

#include "modulewrapper.h"


int main() {
  std::unique_ptr<bssl::acvp::RequestBuffer> buffer =
      bssl::acvp::RequestBuffer::New();
  const bssl::acvp::ReplyCallback write_reply = std::bind(
      bssl::acvp::WriteReplyToFd, STDOUT_FILENO, std::placeholders::_1);

  for (;;) {
    const bssl::Span<const bssl::Span<const uint8_t>> args =
        ParseArgsFromFd(STDIN_FILENO, buffer.get());
    if (args.empty()) {
      return 1;
    }

    const bssl::acvp::Handler handler = bssl::acvp::FindHandler(args);
    if (!handler) {
      return 2;
    }

    if (!handler(args.subspan(1).data(), write_reply)) {
      const std::string name(reinterpret_cast<const char *>(args[0].data()),
                             args[0].size());
      fprintf(stderr, "\'%s\' operation failed.\n", name.c_str());
      return 3;
    }
  }
};