monero/contrib/epee/include/net/http_auth.h

// Copyright (c) 2014-2016, The Monero Project
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#pragma once

#include <boost/optional/optional.hpp>
#include <cstdint>
#include "http_base.h"
#include <string>
#include <utility>

namespace epee
{
namespace net_utils
{
  namespace http
  {
    //! Implements RFC 2617 digest auth. Digests from RFC 7616 can be added.
    class http_auth
    {
    public:
      struct login
      {
        login() : username(), password() {}
        login(std::string username_, std::string password_)
          : username(std::move(username_)), password(std::move(password_))
        {}

        std::string username;
        std::string password;
      };

      struct session
      {
        session(login credentials_)
          : credentials(std::move(credentials_)), nonce(), counter(0)
        {}

        login credentials;
        std::string nonce;
        std::uint32_t counter;
      };

      http_auth() : user() {}
      http_auth(login credentials);

      //! \return Auth response, or `boost::none` iff `request` had valid auth.
      boost::optional<http_response_info> get_response(const http_request_info& request)
      {
        if (user)
        {
          return process(request);
        }
        return boost::none;
      }

    private:
      boost::optional<http_response_info> process(const http_request_info& request);

      boost::optional<session> user;
    };
  }
}
}