ServerLoader.hpp

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/************************************************************
 *
 *  ServerLoader.hpp
 *
 */

/************************************************************
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 *                 OPEN TRANSACTIONS
 *
 *       Financial Cryptography and Digital Cash
 *       Library, Protocol, API, Server, CLI, GUI
 *
 *       -- Anonymous Numbered Accounts.
 *       -- Untraceable Digital Cash.
 *       -- Triple-Signed Receipts.
 *       -- Cheques, Vouchers, Transfers, Inboxes.
 *       -- Basket Currencies, Markets, Payment Plans.
 *       -- Signed, XML, Ricardian-style Contracts.
 *       -- Scripted smart contracts.
 *
 *  Copyright (C) 2010-2013 by "Fellow Traveler" (A pseudonym)
 *
 *  EMAIL:
 *  [email protected]
 *
 *  BITCOIN:  1NtTPVVjDsUfDWybS4BwvHpG2pdS9RnYyQ
 *
 *  KEY FINGERPRINT (PGP Key in license file):
 *  9DD5 90EB 9292 4B48 0484  7910 0308 00ED F951 BB8E
 *
 *  OFFICIAL PROJECT WIKI(s):
 *  https://github.com/FellowTraveler/Moneychanger
 *  https://github.com/FellowTraveler/Open-Transactions/wiki
 *
 *  WEBSITE:
 *  http://www.OpenTransactions.org/
 *
 *  Components and licensing:
 *   -- Moneychanger..A Java client GUI.....LICENSE:.....GPLv3
 *   -- otlib.........A class library.......LICENSE:...LAGPLv3
 *   -- otapi.........A client API..........LICENSE:...LAGPLv3
 *   -- opentxs/ot....Command-line client...LICENSE:...LAGPLv3
 *   -- otserver......Server Application....LICENSE:....AGPLv3
 *  Github.com/FellowTraveler/Open-Transactions/wiki/Components
 *
 *  All of the above OT components were designed and written by
 *  Fellow Traveler, with the exception of Moneychanger, which
 *  was contracted out to Vicky C ([email protected]).
 *  The open-source community has since actively contributed.
 *
 *  -----------------------------------------------------
 *
 *   LICENSE:
 *   This program is free software: you can redistribute it
 *   and/or modify it under the terms of the GNU Affero
 *   General Public License as published by the Free Software
 *   Foundation, either version 3 of the License, or (at your
 *   option) any later version.
 *
 *   ADDITIONAL PERMISSION under the GNU Affero GPL version 3
 *   section 7: (This paragraph applies only to the LAGPLv3
 *   components listed above.) If you modify this Program, or
 *   any covered work, by linking or combining it with other
 *   code, such other code is not for that reason alone subject
 *   to any of the requirements of the GNU Affero GPL version 3.
 *   (==> This means if you are only using the OT API, then you
 *   don't have to open-source your code--only your changes to
 *   Open-Transactions itself must be open source. Similar to
 *   LGPLv3, except it applies to software-as-a-service, not
 *   just to distributing binaries.)
 *
 *   Extra WAIVER for OpenSSL, Lucre, and all other libraries
 *   used by Open Transactions: This program is released under
 *   the AGPL with the additional exemption that compiling,
 *   linking, and/or using OpenSSL is allowed. The same is true
 *   for any other open source libraries included in this
 *   project: complete waiver from the AGPL is hereby granted to
 *   compile, link, and/or use them with Open-Transactions,
 *   according to their own terms, as long as the rest of the
 *   Open-Transactions terms remain respected, with regard to
 *   the Open-Transactions code itself.
 *
 *   Lucre License:
 *   This code is also "dual-license", meaning that Ben Lau-
 *   rie's license must also be included and respected, since
 *   the code for Lucre is also included with Open Transactions.
 *   See Open-Transactions/src/otlib/lucre/LUCRE_LICENSE.txt
 *   The Laurie requirements are light, but if there is any
 *   problem with his license, simply remove the Lucre code.
 *   Although there are no other blind token algorithms in Open
 *   Transactions (yet. credlib is coming), the other functions
 *   will continue to operate.
 *   See Lucre on Github:  https://github.com/benlaurie/lucre
 *   -----------------------------------------------------
 *   You should have received a copy of the GNU Affero General
 *   Public License along with this program.  If not, see:
 *   http://www.gnu.org/licenses/
 *
 *   If you would like to use this software outside of the free
 *   software license, please contact FellowTraveler.
 *   (Unfortunately many will run anonymously and untraceably,
 *   so who could really stop them?)
 *
 *   DISCLAIMER:
 *   This program 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 Affero General Public License for
 *   more details.

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#ifndef OPENTXS_SERVER_SERVERLOADER_HPP
#define OPENTXS_SERVER_SERVERLOADER_HPP

#include "OTServer.hpp"
#include <opentxs/core/crypto/OTCachedKey.hpp>
#include <opentxs/core/crypto/OTCrypto.hpp>
#include <opentxs/core/util/OTDataFolder.hpp>
#include <opentxs/core/OTLog.hpp>

#define SERVER_CONFIG_KEY "server"

namespace opentxs
{

class ServerLoader
{
public:
    ServerLoader()
        : server_(nullptr)
    {
// This is optional! (I, of course, am using it in this test app...)
#if defined(OT_SIGNAL_HANDLING)
        OTLog::SetupSignalHandler();
#endif
        // I instantiate this here (instead of globally) so that I am
        // assured that any globals and other
        // setup is already done before we instantiate the server object
        // itself.
        OT_ASSERT_MSG(nullptr == server_,
                      "server main(): ASSERT: nullptr == server_.");
        server_ = new OTServer;

        OT_ASSERT_MSG(
            nullptr != server_,
            "server main(): ASSERT: Unable to instantiate OT server.\n");

        {
            bool setupPathsSuccess = false;
            if (!OTDataFolder::Init(SERVER_CONFIG_KEY)) {
                OT_FAIL;
            }
            else {
                setupPathsSuccess = true;
            }
            OT_ASSERT_MSG(setupPathsSuccess,
                          "main(): Assert failed: Failed to set OT Path");

            if (!OTDataFolder::IsInitialized()) {
                OT_FAIL;
            }
        }
        OTCrypto::It()->Init();

        // OTServer::Init loads up server's nym so it can decrypt messages sent
        // in envelopes. It also does various other initialization work.
        //
        // NOTE: Envelopes prove that ONLY someone who actually had the server
        // contract, and had loaded it into his wallet, could ever connect to
        // the server or communicate with it. And if that person is following
        // the contract, there is only one server he can connect to, and one
        // key he can use to talk to it.
        //
        // Keys, etc are loaded here. Assumes main path is set!
        server_->Init();

        // A heartbeat for recurring transactions, such as markets, payment
        // plans, and smart contracts.
        server_->ActivateCron();
    }

    ~ServerLoader()
    {
        OTLog::vOutput(0, "\n\n Shutting down and cleaning up.\n");

        if (server_) {
            delete server_;
            server_ = nullptr;
        }
        OTCachedKey::Cleanup();
        OTCrypto::It()->Cleanup();
    }

    OTServer* getServer()
    {
        return server_;
    }

    int getPort() const
    {
        // We're going to listen on the same port that is listed in our server
        // contract. The hostname of this server, according to its own contract.
        OTString hostname;
        int port = 0;
        bool connectInfo = server_->GetConnectInfo(hostname, port);

        OT_ASSERT_MSG(connectInfo,
                      "server main: Unable to find my own connect "
                      "info (which SHOULD be in my server contract, "
                      "BTW.) Perhaps you failed trying to open that "
                      "contract? Have you tried the test password? "
                      "(\"test\")\n");
        return port;
    }

private:
    ServerLoader(const ServerLoader&);
    ServerLoader& operator=(const ServerLoader&);

    OTServer* server_;
};

} // namespace opentxs

#endif // OPENTXS_SERVER_SERVERLOADER_HPP