dash/src/init.cpp

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Copyright (c) 2014-2015 The Dash developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#if defined(HAVE_CONFIG_H)
#include "config/dash-config.h"
#endif

#include "init.h"

#include "addrman.h"
#include "amount.h"
#include "checkpoints.h"
#include "compat/sanity.h"
#include "key.h"
#include "main.h"
#include "miner.h"
#include "net.h"
#include "rpcserver.h"
#include "script/standard.h"
#include "txdb.h"
#include "ui_interface.h"
#include "util.h"
#include "activemasternode.h"
#include "masternode-budget.h"
#include "masternode-payments.h"
#include "masternodeman.h"
#include "masternodeconfig.h"
#include "spork.h"
#include "utilmoneystr.h"
#ifdef ENABLE_WALLET
#include "db.h"
#include "wallet.h"
#include "walletdb.h"
#include "keepass.h"
#endif

#include <stdint.h>
#include <stdio.h>

#ifndef WIN32
#include <signal.h>
#endif

#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <boost/interprocess/sync/file_lock.hpp>
#include <boost/thread.hpp>
#include <openssl/crypto.h>

using namespace boost;
using namespace std;

#ifdef ENABLE_WALLET
CWallet* pwalletMain = NULL;
int nWalletBackups = 10;
#endif
bool fFeeEstimatesInitialized = false;
bool fRestartRequested = false;  // true: restart false: shutdown

#ifdef WIN32
// Win32 LevelDB doesn't use filedescriptors, and the ones used for
// accessing block files, don't count towards to fd_set size limit
// anyway.
#define MIN_CORE_FILEDESCRIPTORS 0
#else
#define MIN_CORE_FILEDESCRIPTORS 150
#endif

/** Used to pass flags to the Bind() function */
enum BindFlags {
    BF_NONE         = 0,
    BF_EXPLICIT     = (1U << 0),
    BF_REPORT_ERROR = (1U << 1),
    BF_WHITELIST    = (1U << 2),
};

static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
CClientUIInterface uiInterface;

//////////////////////////////////////////////////////////////////////////////
//
// Shutdown
//

//
// Thread management and startup/shutdown:
//
// The network-processing threads are all part of a thread group
// created by AppInit() or the Qt main() function.
//
// A clean exit happens when StartShutdown() or the SIGTERM
// signal handler sets fRequestShutdown, which triggers
// the DetectShutdownThread(), which interrupts the main thread group.
// DetectShutdownThread() then exits, which causes AppInit() to
// continue (it .joins the shutdown thread).
// Shutdown() is then
// called to clean up database connections, and stop other
// threads that should only be stopped after the main network-processing
// threads have exited.
//
// Note that if running -daemon the parent process returns from AppInit2
// before adding any threads to the threadGroup, so .join_all() returns
// immediately and the parent exits from main().
//
// Shutdown for Qt is very similar, only it uses a QTimer to detect
// fRequestShutdown getting set, and then does the normal Qt
// shutdown thing.
//

volatile bool fRequestShutdown = false;

void StartShutdown()
{
    fRequestShutdown = true;
}
bool ShutdownRequested()
{
    return fRequestShutdown || fRestartRequested;
}

class CCoinsViewErrorCatcher : public CCoinsViewBacked
{
public:
    CCoinsViewErrorCatcher(CCoinsView* view) : CCoinsViewBacked(view) {}
    bool GetCoins(const uint256 &txid, CCoins &coins) const {
        try {
            return CCoinsViewBacked::GetCoins(txid, coins);
        } catch(const std::runtime_error& e) {
            uiInterface.ThreadSafeMessageBox(_("Error reading from database, shutting down."), "", CClientUIInterface::MSG_ERROR);
            LogPrintf("Error reading from database: %s\n", e.what());
            // Starting the shutdown sequence and returning false to the caller would be
            // interpreted as 'entry not found' (as opposed to unable to read data), and
            // could lead to invalid interpration. Just exit immediately, as we can't
            // continue anyway, and all writes should be atomic.
            abort();
        }
    }
    // Writes do not need similar protection, as failure to write is handled by the caller.
};

static CCoinsViewDB *pcoinsdbview = NULL;
static CCoinsViewErrorCatcher *pcoinscatcher = NULL;

/** Preparing steps before shutting down or restarting the wallet */
void PrepareShutdown()
{
    fRequestShutdown = true; // Needed when we shutdown the wallet
    fRestartRequested = true; // Needed when we restart the wallet
    LogPrintf("%s: In progress...\n", __func__);
    static CCriticalSection cs_Shutdown;
    TRY_LOCK(cs_Shutdown, lockShutdown);
    if (!lockShutdown)
        return;

    /// Note: Shutdown() must be able to handle cases in which AppInit2() failed part of the way,
    /// for example if the data directory was found to be locked.
    /// Be sure that anything that writes files or flushes caches only does this if the respective
    /// module was initialized.
    RenameThread("dash-shutoff");
    mempool.AddTransactionsUpdated(1);
    StopRPCThreads();
#ifdef ENABLE_WALLET
    if (pwalletMain)
        bitdb.Flush(false);
    GenerateBitcoins(false, NULL, 0);
#endif
    StopNode();
    DumpMasternodes();
    //DumpBudgets();
    //DumpMasternodePayments();
    UnregisterNodeSignals(GetNodeSignals());

    if (fFeeEstimatesInitialized)
    {
        boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
        CAutoFile est_fileout(fopen(est_path.string().c_str(), "wb"), SER_DISK, CLIENT_VERSION);
        if (!est_fileout.IsNull())
            mempool.WriteFeeEstimates(est_fileout);
        else
            LogPrintf("%s: Failed to write fee estimates to %s\n", __func__, est_path.string());
        fFeeEstimatesInitialized = false;
    }

    {
        LOCK(cs_main);
        if (pcoinsTip != NULL) {
            FlushStateToDisk();
        }
        delete pcoinsTip;
        pcoinsTip = NULL;
        delete pcoinscatcher;
        pcoinscatcher = NULL;
        delete pcoinsdbview;
        pcoinsdbview = NULL;
        delete pblocktree;
        pblocktree = NULL;
    }
#ifdef ENABLE_WALLET
    if (pwalletMain)
        bitdb.Flush(true);
#endif
#ifndef WIN32
    boost::filesystem::remove(GetPidFile());
#endif
    UnregisterAllValidationInterfaces();
}

/**
* Shutdown is split into 2 parts:
* Part 1: shut down everything but the main wallet instance (done in PrepareShutdown() )
* Part 2: delete wallet instance
*
* In case of a restart PrepareShutdown() was already called before, but this method here gets
* called implicitly when the parent object is deleted. In this case we have to skip the
* PrepareShutdown() part because it was already executed and just delete the wallet instance.
*/
void Shutdown()
{
    // Shutdown part 1: prepare shutdown
    if(!fRestartRequested){
        PrepareShutdown();
    }

   // Shutdown part 2: delete wallet instance
#ifdef ENABLE_WALLET
    delete pwalletMain;
    pwalletMain = NULL;
#endif
    LogPrintf("%s: done\n", __func__);
}

/**
 * Signal handlers are very limited in what they are allowed to do, so:
 */
void HandleSIGTERM(int)
{
    fRequestShutdown = true;
}

void HandleSIGHUP(int)
{
    fReopenDebugLog = true;
}

bool static InitError(const std::string &str)
{
    uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
    return false;
}

bool static InitWarning(const std::string &str)
{
    uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
    return true;
}

bool static Bind(const CService &addr, unsigned int flags) {
    if (!(flags & BF_EXPLICIT) && IsLimited(addr))
        return false;
    std::string strError;
    if (!BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
        if (flags & BF_REPORT_ERROR)
            return InitError(strError);
        return false;
    }
    return true;
}

std::string HelpMessage(HelpMessageMode mode)
{
    // When adding new options to the categories, please keep and ensure alphabetical ordering.
    string strUsage = _("Options:") + "\n";
    strUsage += "  -?                     " + _("This help message") + "\n";
    strUsage += "  -alertnotify=<cmd>     " + _("Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message)") + "\n";
    strUsage += "  -alerts                " + strprintf(_("Receive and display P2P network alerts (default: %u)"), DEFAULT_ALERTS);
    strUsage += "  -blocknotify=<cmd>     " + _("Execute command when the best block changes (%s in cmd is replaced by block hash)") + "\n";
    strUsage += "  -checkblocks=<n>       " + strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), 288) + "\n";
    strUsage += "  -checklevel=<n>        " + strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), 3) + "\n";
    strUsage += "  -conf=<file>           " + strprintf(_("Specify configuration file (default: %s)"), "dash.conf") + "\n";
    if (mode == HMM_BITCOIND)
    {
#if !defined(WIN32)
        strUsage += "  -daemon                " + _("Run in the background as a daemon and accept commands") + "\n";
#endif
    }
    strUsage += "  -datadir=<dir>         " + _("Specify data directory") + "\n";
    strUsage += "  -dbcache=<n>           " + strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache) + "\n";
    strUsage += "  -loadblock=<file>      " + _("Imports blocks from external blk000??.dat file") + " " + _("on startup") + "\n";
    strUsage += "  -maxorphantx=<n>       " + strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS) + "\n";
    strUsage += "  -par=<n>               " + strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"), -(int)boost::thread::hardware_concurrency(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS) + "\n";
#ifndef WIN32
    strUsage += "  -pid=<file>            " + strprintf(_("Specify pid file (default: %s)"), "dashd.pid") + "\n";
#endif
    strUsage += "  -reindex               " + _("Rebuild block chain index from current blk000??.dat files") + " " + _("on startup") + "\n";
#if !defined(WIN32)
    strUsage += "  -sysperms              " + _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)") + "\n";
#endif
    strUsage += "  -txindex               " + strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), 0) + "\n";

    strUsage += "\n" + _("Connection options:") + "\n";
    strUsage += "  -addnode=<ip>          " + _("Add a node to connect to and attempt to keep the connection open") + "\n";
    strUsage += "  -banscore=<n>          " + strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), 100) + "\n";
    strUsage += "  -bantime=<n>           " + strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), 86400) + "\n";
    strUsage += "  -bind=<addr>           " + _("Bind to given address and always listen on it. Use [host]:port notation for IPv6") + "\n";
    strUsage += "  -connect=<ip>          " + _("Connect only to the specified node(s)") + "\n";
    strUsage += "  -discover              " + _("Discover own IP address (default: 1 when listening and no -externalip)") + "\n";
    strUsage += "  -dns                   " + _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + _("(default: 1)") + "\n";
    strUsage += "  -dnsseed               " + _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)") + "\n";
    strUsage += "  -externalip=<ip>       " + _("Specify your own public address") + "\n";
    strUsage += "  -forcednsseed          " + strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), 0) + "\n";
    strUsage += "  -listen                " + _("Accept connections from outside (default: 1 if no -proxy or -connect)") + "\n";
    strUsage += "  -maxconnections=<n>    " + strprintf(_("Maintain at most <n> connections to peers (default: %u)"), 125) + "\n";
    strUsage += "  -maxreceivebuffer=<n>  " + strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), 5000) + "\n";
    strUsage += "  -maxsendbuffer=<n>     " + strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), 1000) + "\n";
    strUsage += "  -onion=<ip:port>       " + strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy") + "\n";
    strUsage += "  -onlynet=<net>         " + _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)") + "\n";
    strUsage += "  -permitbaremultisig    " + strprintf(_("Relay non-P2SH multisig (default: %u)"), 1) + "\n";
    strUsage += "  -port=<port>           " + strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 9999, 19999) + "\n";
    strUsage += "  -proxy=<ip:port>       " + _("Connect through SOCKS5 proxy") + "\n";
    strUsage += "  -seednode=<ip>         " + _("Connect to a node to retrieve peer addresses, and disconnect") + "\n";
    strUsage += "  -timeout=<n>           " + strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT) + "\n";
#ifdef USE_UPNP
#if USE_UPNP
    strUsage += "  -upnp                  " + _("Use UPnP to map the listening port (default: 1 when listening)") + "\n";
#else
    strUsage += "  -upnp                  " + strprintf(_("Use UPnP to map the listening port (default: %u)"), 0) + "\n";
#endif
#endif
    strUsage += "  -whitebind=<addr>      " + _("Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6") + "\n";
    strUsage += "  -whitelist=<netmask>   " + _("Whitelist peers connecting from the given netmask or IP address. Can be specified multiple times.") + "\n";
    strUsage += "                         " + _("Whitelisted peers cannot be DoS banned and their transactions are always relayed, even if they are already in the mempool, useful e.g. for a gateway") + "\n";

#ifdef ENABLE_WALLET
    strUsage += "\n" + _("Wallet options:") + "\n";
    strUsage += "  -createwalletbackups=<n> " + _("Number of automatic wallet backups (default: 10)") + "\n";
    strUsage += "  -disablewallet           " + _("Do not load the wallet and disable wallet RPC calls") + "\n";
    strUsage += "  -keepass                 " + strprintf(_("Use KeePass 2 integration using KeePassHttp plugin (default: %u)"), 0) + "\n";
    strUsage += "  -keepassport=<port>      " + strprintf(_("Connect to KeePassHttp on port <port> (default: %u)"), 19455) + "\n";
    strUsage += "  -keepasskey=<key>        " + _("KeePassHttp key for AES encrypted communication with KeePass") + "\n";
    strUsage += "  -keepassid=<name>        " + _("KeePassHttp id for the established association") + "\n";
    strUsage += "  -keepassname=<name>      " + _("Name to construct url for KeePass entry that stores the wallet passphrase") + "\n";
    strUsage += "  -keypool=<n>             " + strprintf(_("Set key pool size to <n> (default: %u)"), 100) + "\n";
    if (GetBoolArg("-help-debug", false))
        strUsage += "  -mintxfee=<amt>          " + strprintf(_("Fees (in DASH/Kb) smaller than this are considered zero fee for transaction creation (default: %s)"), FormatMoney(CWallet::minTxFee.GetFeePerK())) + "\n";
    strUsage += "  -paytxfee=<amt>          " + strprintf(_("Fee (in DASH/kB) to add to transactions you send (default: %s)"), FormatMoney(payTxFee.GetFeePerK())) + "\n";
    strUsage += "  -rescan                  " + _("Rescan the block chain for missing wallet transactions") + " " + _("on startup") + "\n";
    strUsage += "  -salvagewallet           " + _("Attempt to recover private keys from a corrupt wallet.dat") + " " + _("on startup") + "\n";
    strUsage += "  -sendfreetransactions    " + strprintf(_("Send transactions as zero-fee transactions if possible (default: %u)"), 0) + "\n";
    strUsage += "  -spendzeroconfchange     " + strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), 1) + "\n";
    strUsage += "  -txconfirmtarget=<n>     " + strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), 1) + "\n";
    strUsage += "  -maxtxfee=<amt>          " + strprintf(_("Maximum total fees to use in a single wallet transaction, setting too low may abort large transactions (default: %s)"), FormatMoney(maxTxFee)) + "\n";
    strUsage += "  -upgradewallet           " + _("Upgrade wallet to latest format") + " " + _("on startup") + "\n";
    strUsage += "  -wallet=<file>           " + _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), "wallet.dat") + "\n";
    strUsage += "  -walletnotify=<cmd>      " + _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)") + "\n";
    if (mode == HMM_BITCOIN_QT)
        strUsage += "  -windowtitle=<name>  " + _("Wallet window title") + "\n";
    strUsage += "  -zapwallettxes=<mode>    " + _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") + "\n";
    strUsage += "                           " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)") + "\n";
#endif

    strUsage += "\n" + _("Debugging/Testing options:") + "\n";
    if (GetBoolArg("-help-debug", false))
    {
        strUsage += "  -checkpoints           " + strprintf(_("Only accept block chain matching built-in checkpoints (default: %u)"), 1) + "\n";
        strUsage += "  -dblogsize=<n>         " + strprintf(_("Flush database activity from memory pool to disk log every <n> megabytes (default: %u)"), 100) + "\n";
        strUsage += "  -disablesafemode       " + strprintf(_("Disable safemode, override a real safe mode event (default: %u)"), 0) + "\n";
        strUsage += "  -testsafemode          " + strprintf(_("Force safe mode (default: %u)"), 0) + "\n";
        strUsage += "  -dropmessagestest=<n>  " + _("Randomly drop 1 of every <n> network messages") + "\n";
        strUsage += "  -fuzzmessagestest=<n>  " + _("Randomly fuzz 1 of every <n> network messages") + "\n";
        strUsage += "  -flushwallet           " + strprintf(_("Run a thread to flush wallet periodically (default: %u)"), 1) + "\n";
        strUsage += "  -stopafterblockimport  " + strprintf(_("Stop running after importing blocks from disk (default: %u)"), 0) + "\n";
    }
    strUsage += "  -debug=<category>      " + strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + "\n";
    strUsage += "                         " + _("If <category> is not supplied, output all debugging information.") + "\n";
    strUsage += "                         " + _("<category> can be:\n");
    strUsage += "                           addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net,\n"; // Don't translate these and qt below
    strUsage += "                           dash (or specifically: darksend, instantx, masternode, keepass, mnpayments, mnbudget)"; // Don't translate these and qt below
    if (mode == HMM_BITCOIN_QT)
        strUsage += ", qt";
    strUsage += ".\n";
#ifdef ENABLE_WALLET
    strUsage += "  -gen                   " + strprintf(_("Generate coins (default: %u)"), 0) + "\n";
    strUsage += "  -genproclimit=<n>      " + strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), 1) + "\n";
#endif
    strUsage += "  -help-debug            " + _("Show all debugging options (usage: --help -help-debug)") + "\n";
    strUsage += "  -logips                " + strprintf(_("Include IP addresses in debug output (default: %u)"), 0) + "\n";
    strUsage += "  -logtimestamps         " + strprintf(_("Prepend debug output with timestamp (default: %u)"), 1) + "\n";
    if (GetBoolArg("-help-debug", false))
    {
        strUsage += "  -limitfreerelay=<n>    " + strprintf(_("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default:%u)"), 15) + "\n";
        strUsage += "  -relaypriority         " + strprintf(_("Require high priority for relaying free or low-fee transactions (default:%u)"), 1) + "\n";
        strUsage += "  -maxsigcachesize=<n>   " + strprintf(_("Limit size of signature cache to <n> entries (default: %u)"), 50000) + "\n";
    }
    strUsage += "  -minrelaytxfee=<amt>   " + strprintf(_("Fees (in DASH/Kb) smaller than this are considered zero fee for relaying (default: %s)"), FormatMoney(::minRelayTxFee.GetFeePerK())) + "\n";
    strUsage += "  -printtoconsole        " + strprintf(_("Send trace/debug info to console instead of debug.log file (default: %u)"), 0) + "\n";
    if (GetBoolArg("-help-debug", false))
    {
        strUsage += "  -printpriority         " + strprintf(_("Log transaction priority and fee per kB when mining blocks (default: %u)"), 0) + "\n";
        strUsage += "  -privdb                " + strprintf(_("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)"), 1) + "\n";
        strUsage += "  -regtest               " + _("Enter regression test mode, which uses a special chain in which blocks can be solved instantly.") + "\n";
        strUsage += "                         " + _("This is intended for regression testing tools and app development.") + "\n";
        strUsage += "                         " + _("In this mode -genproclimit controls how many blocks are generated immediately.") + "\n";
    }
    strUsage += "  -shrinkdebugfile       " + _("Shrink debug.log file on client startup (default: 1 when no -debug)") + "\n";
    strUsage += "  -testnet               " + _("Use the test network") + "\n";
    strUsage += "  -litemode=<n>          " + strprintf(_("Disable all Dash specific functionality (Masternodes, Darksend, InstantX, Budgeting) (0-1, default: %u)"), 0) + "\n";

    strUsage += "\n" + _("Masternode options:") + "\n";
    strUsage += "  -masternode=<n>            " + strprintf(_("Enable the client to act as a masternode (0-1, default: %u)"), 0) + "\n";
    strUsage += "  -mnconf=<file>             " + strprintf(_("Specify masternode configuration file (default: %s)"), "masternode.conf") + "\n";
    strUsage += "  -mnconflock=<n>            " + strprintf(_("Lock masternodes from masternode configuration file (default: %u)"), 1) + "\n";
    strUsage += "  -masternodeprivkey=<n>     " + _("Set the masternode private key") + "\n";
    strUsage += "  -masternodeaddr=<n>        " + strprintf(_("Set external address:port to get to this masternode (example: %s)"), "128.127.106.235:9999") + "\n";
    strUsage += "  -budgetvotemode=<mode>     " + _("Change automatic finalized budget voting behavior. mode=auto: Vote for only exact finalized budget match to my generated budget. (string, default: auto)") + "\n";

    strUsage += "\n" + _("Darksend options:") + "\n";
    strUsage += "  -enabledarksend=<n>          " + strprintf(_("Enable use of automated darksend for funds stored in this wallet (0-1, default: %u)"), 0) + "\n";
    strUsage += "  -darksendrounds=<n>          " + strprintf(_("Use N separate masternodes to anonymize funds  (2-8, default: %u)"), 2) + "\n";
    strUsage += "  -anonymizedashamount=<n>     " + strprintf(_("Keep N DASH anonymized (default: %u)"), 0) + "\n";
    strUsage += "  -liquidityprovider=<n>       " + strprintf(_("Provide liquidity to Darksend by infrequently mixing coins on a continual basis (0-100, default: %u, 1=very frequent, high fees, 100=very infrequent, low fees)"), 0) + "\n";

    strUsage += "\n" + _("InstantX options:") + "\n";
    strUsage += "  -enableinstantx=<n>    " + strprintf(_("Enable instantx, show confirmations for locked transactions (bool, default: %s)"), "true") + "\n";
    strUsage += "  -instantxdepth=<n>     " + strprintf(_("Show N confirmations for a successfully locked transaction (0-9999, default: %u)"), 1) + "\n";

    strUsage += "\n" + _("Node relay options:") + "\n";
    strUsage += "  -datacarrier           " + strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1) + "\n";
    strUsage += "  -datacarriersize       " + strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY) + "\n";

    strUsage += "\n" + _("Block creation options:") + "\n";
    strUsage += "  -blockminsize=<n>      " + strprintf(_("Set minimum block size in bytes (default: %u)"), 0) + "\n";
    strUsage += "  -blockmaxsize=<n>      " + strprintf(_("Set maximum block size in bytes (default: %d)"), DEFAULT_BLOCK_MAX_SIZE) + "\n";
    strUsage += "  -blockprioritysize=<n> " + strprintf(_("Set maximum size of high-priority/low-fee transactions in bytes (default: %d)"), DEFAULT_BLOCK_PRIORITY_SIZE) + "\n";

    strUsage += "\n" + _("RPC server options:") + "\n";
    strUsage += "  -server                " + _("Accept command line and JSON-RPC commands") + "\n";
    strUsage += "  -rest                  " + strprintf(_("Accept public REST requests (default: %u)"), 0) + "\n";
    strUsage += "  -rpcbind=<addr>        " + _("Bind to given address to listen for JSON-RPC connections. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces)") + "\n";
    strUsage += "  -rpcuser=<user>        " + _("Username for JSON-RPC connections") + "\n";
    strUsage += "  -rpcpassword=<pw>      " + _("Password for JSON-RPC connections") + "\n";
    strUsage += "  -rpcport=<port>        " + strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), 9998, 19998) + "\n";
    strUsage += "  -rpcallowip=<ip>       " + _("Allow JSON-RPC connections from specified source. Valid for <ip> are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times") + "\n";
    strUsage += "  -rpcthreads=<n>        " + strprintf(_("Set the number of threads to service RPC calls (default: %d)"), 4) + "\n";
    strUsage += "  -rpckeepalive          " + strprintf(_("RPC support for HTTP persistent connections (default: %d)"), 1) + "\n";

    strUsage += "\n" + _("RPC SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n";
    strUsage += "  -rpcssl                                  " + _("Use OpenSSL (https) for JSON-RPC connections") + "\n";
    strUsage += "  -rpcsslcertificatechainfile=<file.cert>  " + strprintf(_("Server certificate file (default: %s)"), "server.cert") + "\n";
    strUsage += "  -rpcsslprivatekeyfile=<file.pem>         " + strprintf(_("Server private key (default: %s)"), "server.pem") + "\n";
    strUsage += "  -rpcsslciphers=<ciphers>                 " + strprintf(_("Acceptable ciphers (default: %s)"), "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH") + "\n";

    return strUsage;
}

std::string LicenseInfo()
{
    return FormatParagraph(strprintf(_("Copyright (C) 2009-%i The Bitcoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
           "\n" +
           FormatParagraph(strprintf(_("Copyright (C) 2014-%i The Dash Core Developers"), COPYRIGHT_YEAR)) + "\n" +
           "\n" +
           FormatParagraph(_("This is experimental software.")) + "\n" +
           "\n" +
           FormatParagraph(_("Distributed under the MIT software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.")) + "\n" +
           "\n" +
           FormatParagraph(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit <https://www.openssl.org/> and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard.")) +
           "\n";
}

static void BlockNotifyCallback(const uint256& hashNewTip)
{
    std::string strCmd = GetArg("-blocknotify", "");

    boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
    boost::thread t(runCommand, strCmd); // thread runs free
}

struct CImportingNow
{
    CImportingNow() {
        assert(fImporting == false);
        fImporting = true;
    }

    ~CImportingNow() {
        assert(fImporting == true);
        fImporting = false;
    }
};

void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
{
    RenameThread("dash-loadblk");

    // -reindex
    if (fReindex) {
        CImportingNow imp;
        int nFile = 0;
        while (true) {
            CDiskBlockPos pos(nFile, 0);
            if (!boost::filesystem::exists(GetBlockPosFilename(pos, "blk")))
                break; // No block files left to reindex
            FILE *file = OpenBlockFile(pos, true);
            if (!file)
                break; // This error is logged in OpenBlockFile
            LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
            LoadExternalBlockFile(file, &pos);
            nFile++;
        }
        pblocktree->WriteReindexing(false);
        fReindex = false;
        LogPrintf("Reindexing finished\n");
        // To avoid ending up in a situation without genesis block, re-try initializing (no-op if reindexing worked):
        InitBlockIndex();
    }

    // hardcoded $DATADIR/bootstrap.dat
    filesystem::path pathBootstrap = GetDataDir() / "bootstrap.dat";
    if (filesystem::exists(pathBootstrap)) {
        FILE *file = fopen(pathBootstrap.string().c_str(), "rb");
        if (file) {
            CImportingNow imp;
            filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
            LogPrintf("Importing bootstrap.dat...\n");
            LoadExternalBlockFile(file);
            RenameOver(pathBootstrap, pathBootstrapOld);
        } else {
            LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());
        }
    }

    // -loadblock=
    BOOST_FOREACH(boost::filesystem::path &path, vImportFiles) {
        FILE *file = fopen(path.string().c_str(), "rb");
        if (file) {
            CImportingNow imp;
            LogPrintf("Importing blocks file %s...\n", path.string());
            LoadExternalBlockFile(file);
        } else {
            LogPrintf("Warning: Could not open blocks file %s\n", path.string());
        }
    }

    if (GetBoolArg("-stopafterblockimport", false)) {
        LogPrintf("Stopping after block import\n");
        StartShutdown();
    }
}

/** Sanity checks
 *  Ensure that Dash is running in a usable environment with all
 *  necessary library support.
 */
bool InitSanityCheck(void)
{
    if(!ECC_InitSanityCheck()) {
        InitError("OpenSSL appears to lack support for elliptic curve cryptography. For more "
                  "information, visit https://en.bitcoin.it/wiki/OpenSSL_and_EC_Libraries");
        return false;
    }
    if (!glibc_sanity_test() || !glibcxx_sanity_test())
        return false;

    return true;
}



/** Initialize dash.
 *  @pre Parameters should be parsed and config file should be read.
 */
bool AppInit2(boost::thread_group& threadGroup)
{
    // ********************************************************* Step 1: setup
#ifdef _MSC_VER
    // Turn off Microsoft heap dump noise
    _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
    _CrtSetReportFile(_CRT_WARN, CreateFileA("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
#endif
#if _MSC_VER >= 1400
    // Disable confusing "helpful" text message on abort, Ctrl-C
    _set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
#endif
#ifdef WIN32
    // Enable Data Execution Prevention (DEP)
    // Minimum supported OS versions: WinXP SP3, WinVista >= SP1, Win Server 2008
    // A failure is non-critical and needs no further attention!
#ifndef PROCESS_DEP_ENABLE
    // We define this here, because GCCs winbase.h limits this to _WIN32_WINNT >= 0x0601 (Windows 7),
    // which is not correct. Can be removed, when GCCs winbase.h is fixed!
#define PROCESS_DEP_ENABLE 0x00000001
#endif
    typedef BOOL (WINAPI *PSETPROCDEPPOL)(DWORD);
    PSETPROCDEPPOL setProcDEPPol = (PSETPROCDEPPOL)GetProcAddress(GetModuleHandleA("Kernel32.dll"), "SetProcessDEPPolicy");
    if (setProcDEPPol != NULL) setProcDEPPol(PROCESS_DEP_ENABLE);

    // Initialize Windows Sockets
    WSADATA wsadata;
    int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
    if (ret != NO_ERROR || LOBYTE(wsadata.wVersion ) != 2 || HIBYTE(wsadata.wVersion) != 2)
    {
        return InitError(strprintf("Error: Winsock library failed to start (WSAStartup returned error %d)", ret));
    }
#endif
#ifndef WIN32

    if (GetBoolArg("-sysperms", false)) {
#ifdef ENABLE_WALLET
        if (!GetBoolArg("-disablewallet", false))
            return InitError("Error: -sysperms is not allowed in combination with enabled wallet functionality");
#endif
    } else {
        umask(077);
    }


    // Clean shutdown on SIGTERM
    struct sigaction sa;
    sa.sa_handler = HandleSIGTERM;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    sigaction(SIGTERM, &sa, NULL);
    sigaction(SIGINT, &sa, NULL);

    // Reopen debug.log on SIGHUP
    struct sigaction sa_hup;
    sa_hup.sa_handler = HandleSIGHUP;
    sigemptyset(&sa_hup.sa_mask);
    sa_hup.sa_flags = 0;
    sigaction(SIGHUP, &sa_hup, NULL);

#if defined (__SVR4) && defined (__sun)
    // ignore SIGPIPE on Solaris
    signal(SIGPIPE, SIG_IGN);
#endif
#endif

    // ********************************************************* Step 2: parameter interactions
    // Set this early so that parameter interactions go to console
    fPrintToConsole = GetBoolArg("-printtoconsole", false);
    fLogTimestamps = GetBoolArg("-logtimestamps", true);
    fLogIPs = GetBoolArg("-logips", false);

    if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
        // when specifying an explicit binding address, you want to listen on it
        // even when -connect or -proxy is specified
        if (SoftSetBoolArg("-listen", true))
            LogPrintf("AppInit2 : parameter interaction: -bind or -whitebind set -> setting -listen=1\n");
    }

    if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
        // when only connecting to trusted nodes, do not seed via DNS, or listen by default
        if (SoftSetBoolArg("-dnsseed", false))
            LogPrintf("AppInit2 : parameter interaction: -connect set -> setting -dnsseed=0\n");
        if (SoftSetBoolArg("-listen", false))
            LogPrintf("AppInit2 : parameter interaction: -connect set -> setting -listen=0\n");
    }

    if (mapArgs.count("-proxy")) {
        // to protect privacy, do not listen by default if a default proxy server is specified
        if (SoftSetBoolArg("-listen", false))
            LogPrintf("%s: parameter interaction: -proxy set -> setting -listen=0\n", __func__);
        // to protect privacy, do not use UPNP when a proxy is set. The user may still specify -listen=1
        // to listen locally, so don't rely on this happening through -listen below.
        if (SoftSetBoolArg("-upnp", false))
            LogPrintf("%s: parameter interaction: -proxy set -> setting -upnp=0\n", __func__);
        // to protect privacy, do not discover addresses by default
        if (SoftSetBoolArg("-discover", false))
            LogPrintf("AppInit2 : parameter interaction: -proxy set -> setting -discover=0\n");
    }

    if (!GetBoolArg("-listen", true)) {
        // do not map ports or try to retrieve public IP when not listening (pointless)
        if (SoftSetBoolArg("-upnp", false))
            LogPrintf("AppInit2 : parameter interaction: -listen=0 -> setting -upnp=0\n");
        if (SoftSetBoolArg("-discover", false))
            LogPrintf("AppInit2 : parameter interaction: -listen=0 -> setting -discover=0\n");
    }

    if (mapArgs.count("-externalip")) {
        // if an explicit public IP is specified, do not try to find others
        if (SoftSetBoolArg("-discover", false))
            LogPrintf("AppInit2 : parameter interaction: -externalip set -> setting -discover=0\n");
    }

    if (GetBoolArg("-salvagewallet", false)) {
        // Rewrite just private keys: rescan to find transactions
        if (SoftSetBoolArg("-rescan", true))
            LogPrintf("AppInit2 : parameter interaction: -salvagewallet=1 -> setting -rescan=1\n");
    }

    // -zapwallettx implies a rescan
    if (GetBoolArg("-zapwallettxes", false)) {
        if (SoftSetBoolArg("-rescan", true))
            LogPrintf("AppInit2 : parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n");
    }

    // Make sure enough file descriptors are available
    int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);
    nMaxConnections = GetArg("-maxconnections", 125);
    nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS)), 0);
    int nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS);
    if (nFD < MIN_CORE_FILEDESCRIPTORS)
        return InitError(_("Not enough file descriptors available."));
    if (nFD - MIN_CORE_FILEDESCRIPTORS < nMaxConnections)
        nMaxConnections = nFD - MIN_CORE_FILEDESCRIPTORS;

    // ********************************************************* Step 3: parameter-to-internal-flags

    fDebug = !mapMultiArgs["-debug"].empty();
    // Special-case: if -debug=0/-nodebug is set, turn off debugging messages
    const vector<string>& categories = mapMultiArgs["-debug"];
    if (GetBoolArg("-nodebug", false) || find(categories.begin(), categories.end(), string("0")) != categories.end())
        fDebug = false;

    // Check for -debugnet
    if (GetBoolArg("-debugnet", false))
        InitWarning(_("Warning: Unsupported argument -debugnet ignored, use -debug=net."));
    // Check for -socks - as this is a privacy risk to continue, exit here
    if (mapArgs.count("-socks"))
        return InitError(_("Error: Unsupported argument -socks found. Setting SOCKS version isn't possible anymore, only SOCKS5 proxies are supported."));
    // Check for -tor - as this is a privacy risk to continue, exit here
    if (GetBoolArg("-tor", false))
        return InitError(_("Error: Unsupported argument -tor found, use -onion."));

    if (GetBoolArg("-benchmark", false))
        InitWarning(_("Warning: Unsupported argument -benchmark ignored, use -debug=bench."));

    // Checkmempool and checkblockindex default to true in regtest mode
    mempool.setSanityCheck(GetBoolArg("-checkmempool", Params().DefaultConsistencyChecks()));
    fCheckBlockIndex = GetBoolArg("-checkblockindex", Params().DefaultConsistencyChecks());
    Checkpoints::fEnabled = GetBoolArg("-checkpoints", true);

    // -par=0 means autodetect, but nScriptCheckThreads==0 means no concurrency
    nScriptCheckThreads = GetArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
    if (nScriptCheckThreads <= 0)
        nScriptCheckThreads += boost::thread::hardware_concurrency();
    if (nScriptCheckThreads <= 1)
        nScriptCheckThreads = 0;
    else if (nScriptCheckThreads > MAX_SCRIPTCHECK_THREADS)
        nScriptCheckThreads = MAX_SCRIPTCHECK_THREADS;

    fServer = GetBoolArg("-server", false);
    setvbuf(stdout, NULL, _IOLBF, 0); /// ***TODO*** do we still need this after -printtoconsole is gone?
#ifdef ENABLE_WALLET
    bool fDisableWallet = GetBoolArg("-disablewallet", false);
#endif

    nConnectTimeout = GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
    if (nConnectTimeout <= 0)
        nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;

    // Fee-per-kilobyte amount considered the same as "free"
    // If you are mining, be careful setting this:
    // if you set it to zero then
    // a transaction spammer can cheaply fill blocks using
    // 1-satoshi-fee transactions. It should be set above the real
    // cost to you of processing a transaction.
    if (mapArgs.count("-minrelaytxfee"))
    {
        CAmount n = 0;
        if (ParseMoney(mapArgs["-minrelaytxfee"], n) && n > 0)
            ::minRelayTxFee = CFeeRate(n);
        else
            return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"]));
    }

#ifdef ENABLE_WALLET
    if (mapArgs.count("-mintxfee"))
    {
        CAmount n = 0;
        if (ParseMoney(mapArgs["-mintxfee"], n) && n > 0)
            CWallet::minTxFee = CFeeRate(n);
        else
            return InitError(strprintf(_("Invalid amount for -mintxfee=<amount>: '%s'"), mapArgs["-mintxfee"]));
    }
    if (mapArgs.count("-paytxfee"))
    {
        CAmount nFeePerK = 0;
        if (!ParseMoney(mapArgs["-paytxfee"], nFeePerK))
            return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s'"), mapArgs["-paytxfee"]));
        if (nFeePerK > nHighTransactionFeeWarning)
            InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
        payTxFee = CFeeRate(nFeePerK, 1000);
        if (payTxFee < ::minRelayTxFee)
        {
            return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
                                       mapArgs["-paytxfee"], ::minRelayTxFee.ToString()));
        }
    }
    if (mapArgs.count("-maxtxfee"))
    {
        CAmount nMaxFee = 0;
        if (!ParseMoney(mapArgs["-maxtxfee"], nMaxFee))
            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s'"), mapArgs["-maxtxfee"]));
        if (nMaxFee > nHighTransactionMaxFeeWarning)
            InitWarning(_("Warning: -maxtxfee is set very high! Fees this large could be paid on a single transaction."));
        maxTxFee = nMaxFee;
        if (CFeeRate(maxTxFee, 1000) < ::minRelayTxFee)
        {
            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
                                       mapArgs["-maxtxfee"], ::minRelayTxFee.ToString()));
        }
    }
    nTxConfirmTarget = GetArg("-txconfirmtarget", 1);
    bSpendZeroConfChange = GetArg("-spendzeroconfchange", true);
    fSendFreeTransactions = GetArg("-sendfreetransactions", false);

    std::string strWalletFile = GetArg("-wallet", "wallet.dat");
#endif // ENABLE_WALLET

    fIsBareMultisigStd = GetArg("-permitbaremultisig", true) != 0;
    nMaxDatacarrierBytes = GetArg("-datacarriersize", nMaxDatacarrierBytes);

    fAlerts = GetBoolArg("-alerts", DEFAULT_ALERTS);

    // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log

    // Sanity check
    if (!InitSanityCheck())
        return InitError(_("Initialization sanity check failed. Dash Core is shutting down."));

    std::string strDataDir = GetDataDir().string();
#ifdef ENABLE_WALLET
    // Wallet file must be a plain filename without a directory
    if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
        return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
#endif
    // Make sure only a single Dash process is using the data directory.
    boost::filesystem::path pathLockFile = GetDataDir() / ".lock";
    FILE* file = fopen(pathLockFile.string().c_str(), "a"); // empty lock file; created if it doesn't exist.
    if (file) fclose(file);
    static boost::interprocess::file_lock lock(pathLockFile.string().c_str());

    // Wait maximum 10 seconds if an old wallet is still running. Avoids lockup during restart
    if (!lock.timed_lock(boost::get_system_time() + boost::posix_time::seconds(10)))
        return InitError(strprintf(_("Cannot obtain a lock on data directory %s. Dash Core is probably already running."), strDataDir));

#ifndef WIN32
    CreatePidFile(GetPidFile(), getpid());
#endif
    if (GetBoolArg("-shrinkdebugfile", !fDebug))
        ShrinkDebugFile();
    LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
    LogPrintf("Dash version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
    LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
#ifdef ENABLE_WALLET
    LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
#endif
    if (!fLogTimestamps)
        LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
    LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
    LogPrintf("Using data directory %s\n", strDataDir);
    LogPrintf("Using config file %s\n", GetConfigFile().string());
    LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
    std::ostringstream strErrors;

    LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
    if (nScriptCheckThreads) {
        for (int i=0; i<nScriptCheckThreads-1; i++)
            threadGroup.create_thread(&ThreadScriptCheck);
    }

    if (mapArgs.count("-sporkkey")) // spork priv key
    {
        if (!sporkManager.SetPrivKey(GetArg("-sporkkey", "")))
            return InitError(_("Unable to sign spork message, wrong key?"));
    }

    /* Start the RPC server already.  It will be started in "warmup" mode
     * and not really process calls already (but it will signify connections
     * that the server is there and will be ready later).  Warmup mode will
     * be disabled when initialisation is finished.
     */
    if (fServer)
    {
        uiInterface.InitMessage.connect(SetRPCWarmupStatus);
        StartRPCThreads();
    }

    int64_t nStart;

    // ********************************************************* Step 5: Backup wallet and verify wallet database integrity
#ifdef ENABLE_WALLET
    if (!fDisableWallet) {
    
        filesystem::path backupDir = GetDataDir() / "backups";
        if (!filesystem::exists(backupDir))
        {
            // Always create backup folder to not confuse the operating system's file browser
            filesystem::create_directories(backupDir);
        }
        nWalletBackups = GetArg("-createwalletbackups", 10);
        nWalletBackups = std::max(0, std::min(10, nWalletBackups));
        if(nWalletBackups > 0)
        {
            if (filesystem::exists(backupDir))
            {
                // Create backup of the wallet
                std::string dateTimeStr = DateTimeStrFormat(".%Y-%m-%d-%H-%M", GetTime());
                std::string backupPathStr = backupDir.string();
                backupPathStr += "/" + strWalletFile;
                std::string sourcePathStr = GetDataDir().string();
                sourcePathStr += "/" + strWalletFile;
                boost::filesystem::path sourceFile = sourcePathStr;
                boost::filesystem::path backupFile = backupPathStr + dateTimeStr;
                sourceFile.make_preferred();
                backupFile.make_preferred();
                try {
                    boost::filesystem::copy_file(sourceFile, backupFile);
                    LogPrintf("Creating backup of %s -> %s\n", sourceFile, backupFile);
                } catch(boost::filesystem::filesystem_error &error) {
                    LogPrintf("Failed to create backup %s\n", error.what());
                }
                // Keep only the last 10 backups, including the new one of course
                typedef std::multimap<std::time_t, boost::filesystem::path> folder_set_t;
                folder_set_t folder_set;
                boost::filesystem::directory_iterator end_iter;
                boost::filesystem::path backupFolder = backupDir.string();
                backupFolder.make_preferred();
                // Build map of backup files for current(!) wallet sorted by last write time
                boost::filesystem::path currentFile;
                for (boost::filesystem::directory_iterator dir_iter(backupFolder); dir_iter != end_iter; ++dir_iter)
                {
                    // Only check regular files
                    if ( boost::filesystem::is_regular_file(dir_iter->status()))
                    {
                        currentFile = dir_iter->path().filename();
                        // Only add the backups for the current wallet, e.g. wallet.dat.*
                        if(dir_iter->path().stem().string() == strWalletFile)
                        {
                            folder_set.insert(folder_set_t::value_type(boost::filesystem::last_write_time(dir_iter->path()), *dir_iter));
                        }
                    }
                }
                // Loop backward through backup files and keep the N newest ones (1 <= N <= 10)
                int counter = 0;
                BOOST_REVERSE_FOREACH(PAIRTYPE(const std::time_t, boost::filesystem::path) file, folder_set)
                {
                    counter++;
                    if (counter > nWalletBackups)
                    {
                        // More than nWalletBackups backups: delete oldest one(s)
                        try {
                            boost::filesystem::remove(file.second);
                            LogPrintf("Old backup deleted: %s\n", file.second);
                        } catch(boost::filesystem::filesystem_error &error) {
                            LogPrintf("Failed to delete backup %s\n", error.what());
                        }
                    }
                }
            }
        }

        LogPrintf("Using wallet %s\n", strWalletFile);
        uiInterface.InitMessage(_("Verifying wallet..."));

        if (!bitdb.Open(GetDataDir()))
        {
            // try moving the database env out of the way
            boost::filesystem::path pathDatabase = GetDataDir() / "database";
            boost::filesystem::path pathDatabaseBak = GetDataDir() / strprintf("database.%d.bak", GetTime());
            try {
                boost::filesystem::rename(pathDatabase, pathDatabaseBak);
                LogPrintf("Moved old %s to %s. Retrying.\n", pathDatabase.string(), pathDatabaseBak.string());
            } catch(boost::filesystem::filesystem_error &error) {
                 // failure is ok (well, not really, but it's not worse than what we started with)
            }

            // try again
            if (!bitdb.Open(GetDataDir())) {
                // if it still fails, it probably means we can't even create the database env
                string msg = strprintf(_("Error initializing wallet database environment %s!"), strDataDir);
                return InitError(msg);
            }
        }

        if (GetBoolArg("-salvagewallet", false))
        {
            // Recover readable keypairs:
            if (!CWalletDB::Recover(bitdb, strWalletFile, true))
                return false;
        }

        if (filesystem::exists(GetDataDir() / strWalletFile))
        {
            CDBEnv::VerifyResult r = bitdb.Verify(strWalletFile, CWalletDB::Recover);
            if (r == CDBEnv::RECOVER_OK)
            {
                string msg = strprintf(_("Warning: wallet.dat corrupt, data salvaged!"
                                         " Original wallet.dat saved as wallet.{timestamp}.bak in %s; if"
                                         " your balance or transactions are incorrect you should"
                                         " restore from a backup."), strDataDir);
                InitWarning(msg);
            }
            if (r == CDBEnv::RECOVER_FAIL)
                return InitError(_("wallet.dat corrupt, salvage failed"));
        }

    // Initialize KeePass Integration
    keePassInt.init();

    } // (!fDisableWallet)
#endif // ENABLE_WALLET
    // ********************************************************* Step 6: network initialization

    RegisterNodeSignals(GetNodeSignals());

    if (mapArgs.count("-onlynet")) {
        std::set<enum Network> nets;
        BOOST_FOREACH(std::string snet, mapMultiArgs["-onlynet"]) {
            enum Network net = ParseNetwork(snet);
            if (net == NET_UNROUTABLE)
                return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet));
            nets.insert(net);
        }
        for (int n = 0; n < NET_MAX; n++) {
            enum Network net = (enum Network)n;
            if (!nets.count(net))
                SetLimited(net);
        }
    }

    if (mapArgs.count("-whitelist")) {
        BOOST_FOREACH(const std::string& net, mapMultiArgs["-whitelist"]) {
            CSubNet subnet(net);
            if (!subnet.IsValid())
                return InitError(strprintf(_("Invalid netmask specified in -whitelist: '%s'"), net));
            CNode::AddWhitelistedRange(subnet);
        }
    }

    CService addrProxy;
    bool fProxy = false;
    if (mapArgs.count("-proxy")) {
        addrProxy = CService(mapArgs["-proxy"], 9050);
        if (!addrProxy.IsValid())
            return InitError(strprintf(_("Invalid -proxy address: '%s'"), mapArgs["-proxy"]));

        SetProxy(NET_IPV4, addrProxy);
        SetProxy(NET_IPV6, addrProxy);
        SetNameProxy(addrProxy);
        fProxy = true;
    }

    // -onion can override normal proxy, -noonion disables tor entirely
    if (!(mapArgs.count("-onion") && mapArgs["-onion"] == "0") &&
        (fProxy || mapArgs.count("-onion"))) {
        CService addrOnion;
        if (!mapArgs.count("-onion"))
            addrOnion = addrProxy;
        else
            addrOnion = CService(mapArgs["-onion"], 9050);
        if (!addrOnion.IsValid())
            return InitError(strprintf(_("Invalid -onion address: '%s'"), mapArgs["-onion"]));
        SetProxy(NET_TOR, addrOnion);
        SetReachable(NET_TOR);
    }

    // see Step 2: parameter interactions for more information about these
    fListen = GetBoolArg("-listen", DEFAULT_LISTEN);
    fDiscover = GetBoolArg("-discover", true);
    fNameLookup = GetBoolArg("-dns", true);

    bool fBound = false;
    if (fListen) {
        if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
            BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
                CService addrBind;
                if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
                    return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind));
                fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
            }
            BOOST_FOREACH(std::string strBind, mapMultiArgs["-whitebind"]) {
                CService addrBind;
                if (!Lookup(strBind.c_str(), addrBind, 0, false))
                    return InitError(strprintf(_("Cannot resolve -whitebind address: '%s'"), strBind));
                if (addrBind.GetPort() == 0)
                    return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
                fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
            }
        }
        else {
            struct in_addr inaddr_any;
            inaddr_any.s_addr = INADDR_ANY;
            fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
            fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
        }
        if (!fBound)
            return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
    }

    if (mapArgs.count("-externalip")) {
        BOOST_FOREACH(string strAddr, mapMultiArgs["-externalip"]) {
            CService addrLocal(strAddr, GetListenPort(), fNameLookup);
            if (!addrLocal.IsValid())
                return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr));
            AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
        }
    }

    BOOST_FOREACH(string strDest, mapMultiArgs["-seednode"])
        AddOneShot(strDest);

    // ********************************************************* Step 7: load block chain

    fReindex = GetBoolArg("-reindex", false);

    // Upgrading to 0.8; hard-link the old blknnnn.dat files into /blocks/
    filesystem::path blocksDir = GetDataDir() / "blocks";
    if (!filesystem::exists(blocksDir))
    {
        filesystem::create_directories(blocksDir);
        bool linked = false;
        for (unsigned int i = 1; i < 10000; i++) {
            filesystem::path source = GetDataDir() / strprintf("blk%04u.dat", i);
            if (!filesystem::exists(source)) break;
            filesystem::path dest = blocksDir / strprintf("blk%05u.dat", i-1);
            try {
                filesystem::create_hard_link(source, dest);
                LogPrintf("Hardlinked %s -> %s\n", source.string(), dest.string());
                linked = true;
            } catch (filesystem::filesystem_error & e) {
                // Note: hardlink creation failing is not a disaster, it just means
                // blocks will get re-downloaded from peers.
                LogPrintf("Error hardlinking blk%04u.dat : %s\n", i, e.what());
                break;
            }
        }
        if (linked)
        {
            fReindex = true;
        }
    }

    // cache size calculations
    size_t nTotalCache = (GetArg("-dbcache", nDefaultDbCache) << 20);
    if (nTotalCache < (nMinDbCache << 20))
        nTotalCache = (nMinDbCache << 20); // total cache cannot be less than nMinDbCache
    else if (nTotalCache > (nMaxDbCache << 20))
        nTotalCache = (nMaxDbCache << 20); // total cache cannot be greater than nMaxDbCache
    size_t nBlockTreeDBCache = nTotalCache / 8;
    if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", true))
        nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
    nTotalCache -= nBlockTreeDBCache;
    size_t nCoinDBCache = nTotalCache / 2; // use half of the remaining cache for coindb cache
    nTotalCache -= nCoinDBCache;
    nCoinCacheSize = nTotalCache / 300; // coins in memory require around 300 bytes

    bool fLoaded = false;
    while (!fLoaded) {
        bool fReset = fReindex;
        std::string strLoadError;

        uiInterface.InitMessage(_("Loading block index..."));

        nStart = GetTimeMillis();
        do {
            try {
                UnloadBlockIndex();
                delete pcoinsTip;
                delete pcoinsdbview;
                delete pcoinscatcher;
                delete pblocktree;

                pblocktree = new CBlockTreeDB(nBlockTreeDBCache, false, fReindex);
                pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex);
                pcoinscatcher = new CCoinsViewErrorCatcher(pcoinsdbview);
                pcoinsTip = new CCoinsViewCache(pcoinscatcher);

                if (fReindex)
                    pblocktree->WriteReindexing(true);

                if (!LoadBlockIndex()) {
                    strLoadError = _("Error loading block database");
                    break;
                }

                // If the loaded chain has a wrong genesis, bail out immediately
                // (we're likely using a testnet datadir, or the other way around).
                if (!mapBlockIndex.empty() && mapBlockIndex.count(Params().HashGenesisBlock()) == 0)
                    return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));

                // Initialize the block index (no-op if non-empty database was already loaded)
                if (!InitBlockIndex()) {
                    strLoadError = _("Error initializing block database");
                    break;
                }

                // Check for changed -txindex state
                if (fTxIndex != GetBoolArg("-txindex", true)) {
                    strLoadError = _("You need to rebuild the database using -reindex to change -txindex");
                    break;
                }

                uiInterface.InitMessage(_("Verifying blocks..."));
                if (!CVerifyDB().VerifyDB(pcoinsdbview, GetArg("-checklevel", 3),
                              GetArg("-checkblocks", 288))) {
                    strLoadError = _("Corrupted block database detected");
                    break;
                }
            } catch(std::exception &e) {
                if (fDebug) LogPrintf("%s\n", e.what());
                strLoadError = _("Error opening block database");
                break;
            }

            fLoaded = true;
        } while(false);

        if (!fLoaded) {
            // first suggest a reindex
            if (!fReset) {
                bool fRet = uiInterface.ThreadSafeMessageBox(
                    strLoadError + ".\n\n" + _("Do you want to rebuild the block database now?"),
                    "", CClientUIInterface::MSG_ERROR | CClientUIInterface::BTN_ABORT);
                if (fRet) {
                    fReindex = true;
                    fRequestShutdown = false;
                } else {
                    LogPrintf("Aborted block database rebuild. Exiting.\n");
                    return false;
                }
            } else {
                return InitError(strLoadError);
            }
        }
    }

    // As LoadBlockIndex can take several minutes, it's possible the user
    // requested to kill the GUI during the last operation. If so, exit.
    // As the program has not fully started yet, Shutdown() is possibly overkill.
    if (fRequestShutdown)
    {
        LogPrintf("Shutdown requested. Exiting.\n");
        return false;
    }
    LogPrintf(" block index %15dms\n", GetTimeMillis() - nStart);

    boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
    CAutoFile est_filein(fopen(est_path.string().c_str(), "rb"), SER_DISK, CLIENT_VERSION);
    // Allowed to fail as this file IS missing on first startup.
    if (!est_filein.IsNull())
        mempool.ReadFeeEstimates(est_filein);
    fFeeEstimatesInitialized = true;

    // ********************************************************* Step 8: load wallet
#ifdef ENABLE_WALLET
    if (fDisableWallet) {
        pwalletMain = NULL;
        LogPrintf("Wallet disabled!\n");
    } else {

        // needed to restore wallet transaction meta data after -zapwallettxes
        std::vector<CWalletTx> vWtx;

        if (GetBoolArg("-zapwallettxes", false)) {
            uiInterface.InitMessage(_("Zapping all transactions from wallet..."));

            pwalletMain = new CWallet(strWalletFile);
            DBErrors nZapWalletRet = pwalletMain->ZapWalletTx(vWtx);
            if (nZapWalletRet != DB_LOAD_OK) {
                uiInterface.InitMessage(_("Error loading wallet.dat: Wallet corrupted"));
                return false;
            }

            delete pwalletMain;
            pwalletMain = NULL;
        }

        uiInterface.InitMessage(_("Loading wallet..."));

        nStart = GetTimeMillis();
        bool fFirstRun = true;
        pwalletMain = new CWallet(strWalletFile);
        DBErrors nLoadWalletRet = pwalletMain->LoadWallet(fFirstRun);
        if (nLoadWalletRet != DB_LOAD_OK)
        {
            if (nLoadWalletRet == DB_CORRUPT)
                strErrors << _("Error loading wallet.dat: Wallet corrupted") << "\n";
            else if (nLoadWalletRet == DB_NONCRITICAL_ERROR)
            {
                string msg(_("Warning: error reading wallet.dat! All keys read correctly, but transaction data"
                             " or address book entries might be missing or incorrect."));
                InitWarning(msg);
            }
            else if (nLoadWalletRet == DB_TOO_NEW)
                strErrors << _("Error loading wallet.dat: Wallet requires newer version of Dash Core") << "\n";
            else if (nLoadWalletRet == DB_NEED_REWRITE)
            {
                strErrors << _("Wallet needed to be rewritten: restart Dash Core to complete") << "\n";
                LogPrintf("%s", strErrors.str());
                return InitError(strErrors.str());
            }
            else
                strErrors << _("Error loading wallet.dat") << "\n";
        }

        if (GetBoolArg("-upgradewallet", fFirstRun))
        {
            int nMaxVersion = GetArg("-upgradewallet", 0);
            if (nMaxVersion == 0) // the -upgradewallet without argument case
            {
                LogPrintf("Performing wallet upgrade to %i\n", FEATURE_LATEST);
                nMaxVersion = CLIENT_VERSION;
                pwalletMain->SetMinVersion(FEATURE_LATEST); // permanently upgrade the wallet immediately
            }
            else
                LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
            if (nMaxVersion < pwalletMain->GetVersion())
                strErrors << _("Cannot downgrade wallet") << "\n";
            pwalletMain->SetMaxVersion(nMaxVersion);
        }

        if (fFirstRun)
        {
            // Create new keyUser and set as default key
            RandAddSeedPerfmon();

            CPubKey newDefaultKey;
            if (pwalletMain->GetKeyFromPool(newDefaultKey)) {
                pwalletMain->SetDefaultKey(newDefaultKey);
                if (!pwalletMain->SetAddressBook(pwalletMain->vchDefaultKey.GetID(), "", "receive"))
                    strErrors << _("Cannot write default address") << "\n";
            }

            pwalletMain->SetBestChain(chainActive.GetLocator());
        }

        LogPrintf("%s", strErrors.str());
        LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);

        RegisterValidationInterface(pwalletMain);

        CBlockIndex *pindexRescan = chainActive.Tip();
        if (GetBoolArg("-rescan", false))
            pindexRescan = chainActive.Genesis();
        else
        {
            CWalletDB walletdb(strWalletFile);
            CBlockLocator locator;
            if (walletdb.ReadBestBlock(locator))
                pindexRescan = FindForkInGlobalIndex(chainActive, locator);
            else
                pindexRescan = chainActive.Genesis();
        }
        if (chainActive.Tip() && chainActive.Tip() != pindexRescan)
        {
            uiInterface.InitMessage(_("Rescanning..."));
            LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive.Height() - pindexRescan->nHeight, pindexRescan->nHeight);
            nStart = GetTimeMillis();
            pwalletMain->ScanForWalletTransactions(pindexRescan, true);
            LogPrintf(" rescan      %15dms\n", GetTimeMillis() - nStart);
            pwalletMain->SetBestChain(chainActive.GetLocator());
            nWalletDBUpdated++;

            // Restore wallet transaction metadata after -zapwallettxes=1
            if (GetBoolArg("-zapwallettxes", false) && GetArg("-zapwallettxes", "1") != "2")
            {
                BOOST_FOREACH(const CWalletTx& wtxOld, vWtx)
                {
                    uint256 hash = wtxOld.GetHash();
                    std::map<uint256, CWalletTx>::iterator mi = pwalletMain->mapWallet.find(hash);
                    if (mi != pwalletMain->mapWallet.end())
                    {
                        const CWalletTx* copyFrom = &wtxOld;
                        CWalletTx* copyTo = &mi->second;
                        copyTo->mapValue = copyFrom->mapValue;
                        copyTo->vOrderForm = copyFrom->vOrderForm;
                        copyTo->nTimeReceived = copyFrom->nTimeReceived;
                        copyTo->nTimeSmart = copyFrom->nTimeSmart;
                        copyTo->fFromMe = copyFrom->fFromMe;
                        copyTo->strFromAccount = copyFrom->strFromAccount;
                        copyTo->nOrderPos = copyFrom->nOrderPos;
                        copyTo->WriteToDisk();
                    }
                }
            }
        }
    } // (!fDisableWallet)
#else // ENABLE_WALLET
    LogPrintf("No wallet compiled in!\n");
#endif // !ENABLE_WALLET
    // ********************************************************* Step 9: import blocks

    if (mapArgs.count("-blocknotify"))
        uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);

    // scan for better chains in the block chain database, that are not yet connected in the active best chain
    CValidationState state;
    if (!ActivateBestChain(state))
        strErrors << "Failed to connect best block";

    std::vector<boost::filesystem::path> vImportFiles;
    if (mapArgs.count("-loadblock"))
    {
        BOOST_FOREACH(string strFile, mapMultiArgs["-loadblock"])
            vImportFiles.push_back(strFile);
    }
    threadGroup.create_thread(boost::bind(&ThreadImport, vImportFiles));
    if (chainActive.Tip() == NULL) {
        LogPrintf("Waiting for genesis block to be imported...\n");
        while (!fRequestShutdown && chainActive.Tip() == NULL)
            MilliSleep(10);
    }

    // ********************************************************* Step 10: setup DarkSend



         uiInterface.InitMessage(_("Loading masternode cache..."));

         CMasternodeDB mndb;
         CMasternodeDB::ReadResult readResult = mndb.Read(mnodeman);
         if (readResult == CMasternodeDB::FileError)
             LogPrintf("Missing masternode cache file - mncache.dat, will try to recreate\n");
         else if (readResult != CMasternodeDB::Ok)
         {
             LogPrintf("Error reading mncache.dat: ");
             if(readResult == CMasternodeDB::IncorrectFormat)
                 LogPrintf("magic is ok but data has invalid format, will try to recreate\n");
             else
                 LogPrintf("file format is unknown or invalid, please fix it manually\n");
         }

    /*

        We sync all of this information on boot anyway, as it's kept on the network so there's really no point.
        Also, it seems it might be causing some edge cases where clients can get stuck. I think it's better to just
        sync from the network instead.

        // ---------
        // uiInterface.InitMessage(_("Loading budget cache..."));

        // CBudgetDB budgetdb;
        // CBudgetDB::ReadResult readResult2 = budgetdb.Read(budget);
        
        // if (readResult2 == CBudgetDB::FileError)
        //     LogPrintf("Missing budget cache - budget.dat, will try to recreate\n");
        // else if (readResult2 != CBudgetDB::Ok)
        // {
        //     LogPrintf("Error reading budget.dat: ");
        //     if(readResult2 == CBudgetDB::IncorrectFormat)
        //         LogPrintf("magic is ok but data has invalid format, will try to recreate\n");
        //     else
        //         LogPrintf("file format is unknown or invalid, please fix it manually\n");
        // }

        // //flag our cached items so we send them to our peers
        // budget.ResetSync();
        // budget.ClearSeen();


        // uiInterface.InitMessage(_("Loading masternode payment cache..."));

        // CMasternodePaymentDB mnpayments;
        // CMasternodePaymentDB::ReadResult readResult3 = mnpayments.Read(masternodePayments);
        
        // if (readResult3 == CMasternodePaymentDB::FileError)
        //     LogPrintf("Missing masternode payment cache - mnpayments.dat, will try to recreate\n");
        // else if (readResult3 != CMasternodePaymentDB::Ok)
        // {
        //     LogPrintf("Error reading mnpayments.dat: ");
        //     if(readResult3 == CMasternodePaymentDB::IncorrectFormat)
        //         LogPrintf("magic is ok but data has invalid format, will try to recreate\n");
        //     else
        //         LogPrintf("file format is unknown or invalid, please fix it manually\n");
        // }
    */

    fMasterNode = GetBoolArg("-masternode", false);

    if((fMasterNode || masternodeConfig.getCount() > -1) && fTxIndex == false) {
        return InitError("Enabling Masternode support requires turning on transaction indexing."
                  "Please add txindex=1 to your configuration and start with --reindex=1");
    }

    if(fMasterNode) {
        LogPrintf("IS DARKSEND MASTER NODE\n");
        strMasterNodeAddr = GetArg("-masternodeaddr", "");

        LogPrintf(" addr %s\n", strMasterNodeAddr.c_str());

        if(!strMasterNodeAddr.empty()){
            CService addrTest = CService(strMasterNodeAddr);
            if (!addrTest.IsValid()) {
                return InitError("Invalid -masternodeaddr address: " + strMasterNodeAddr);
            }
        }

        strMasterNodePrivKey = GetArg("-masternodeprivkey", "");
        if(!strMasterNodePrivKey.empty()){
            std::string errorMessage;

            CKey key;
            CPubKey pubkey;

            if(!darkSendSigner.SetKey(strMasterNodePrivKey, errorMessage, key, pubkey))
            {
                return InitError(_("Invalid masternodeprivkey. Please see documenation."));
            }

            activeMasternode.pubKeyMasternode = pubkey;

        } else {
            return InitError(_("You must specify a masternodeprivkey in the configuration. Please see documentation for help."));
        }
    }
    
    //get the mode of budget voting for this masternode
    strBudgetMode = GetArg("-budgetvotemode", "auto");

    if(GetBoolArg("-mnconflock", true) && pwalletMain) {
        LOCK(pwalletMain->cs_wallet);
        LogPrintf("Locking Masternodes:\n");
        uint256 mnTxHash;
        BOOST_FOREACH(CMasternodeConfig::CMasternodeEntry mne, masternodeConfig.getEntries()) {
            LogPrintf("  %s %s\n", mne.getTxHash(), mne.getOutputIndex());
            mnTxHash.SetHex(mne.getTxHash());
            COutPoint outpoint = COutPoint(mnTxHash, boost::lexical_cast<unsigned int>(mne.getOutputIndex()));
            pwalletMain->LockCoin(outpoint);
        }
    }

    fEnableDarksend = GetBoolArg("-enabledarksend", false);

    nDarksendRounds = GetArg("-darksendrounds", 2);
    if(nDarksendRounds > 16) nDarksendRounds = 16;
    if(nDarksendRounds < 1) nDarksendRounds = 1;

    nLiquidityProvider = GetArg("-liquidityprovider", 0); //0-100
    if(nLiquidityProvider != 0) {
        darkSendPool.SetMinBlockSpacing(std::min(nLiquidityProvider,100)*15);
        fEnableDarksend = true;
        nDarksendRounds = 99999;
    }

    nAnonymizeDarkcoinAmount = GetArg("-anonymizedashamount", 0);
    if(nAnonymizeDarkcoinAmount > 999999) nAnonymizeDarkcoinAmount = 999999;
    if(nAnonymizeDarkcoinAmount < 2) nAnonymizeDarkcoinAmount = 2;

    bool fEnableInstantX = GetBoolArg("-enableinstantx", true);
    if(fEnableInstantX){
        nInstantXDepth = GetArg("-instantxdepth", 5);
        if(nInstantXDepth > 60) nInstantXDepth = 60;
        if(nInstantXDepth < 0) nAnonymizeDarkcoinAmount = 0;
    } else {
        nInstantXDepth = 0;
    }

    //lite mode disables all Masternode and Darksend related functionality
    fLiteMode = GetBoolArg("-litemode", false);
    if(fMasterNode && fLiteMode){
        return InitError("You can not start a masternode in litemode");
    }

    LogPrintf("fLiteMode %d\n", fLiteMode);
    LogPrintf("nInstantXDepth %d\n", nInstantXDepth);
    LogPrintf("Darksend rounds %d\n", nDarksendRounds);
    LogPrintf("Anonymize Dash Amount %d\n", nAnonymizeDarkcoinAmount);
    LogPrintf("Budget Mode %s\n", strBudgetMode.c_str());

    /* Denominations

       A note about convertability. Within Darksend pools, each denomination
       is convertable to another.

       For example:
       1DRK+1000 == (.1DRK+100)*10
       10DRK+10000 == (1DRK+1000)*10
    */
    darkSendDenominations.push_back( (100      * COIN)+100000 );
    darkSendDenominations.push_back( (10       * COIN)+10000 );
    darkSendDenominations.push_back( (1        * COIN)+1000 );
    darkSendDenominations.push_back( (.1       * COIN)+100 );
    /* Disabled till we need them
    darkSendDenominations.push_back( (.01      * COIN)+10 );
    darkSendDenominations.push_back( (.001     * COIN)+1 );
    */

    darkSendPool.InitCollateralAddress();

    threadGroup.create_thread(boost::bind(&ThreadCheckDarkSendPool));

    // ********************************************************* Step 11: start node

    if (!CheckDiskSpace())
        return false;

    if (!strErrors.str().empty())
        return InitError(strErrors.str());

    RandAddSeedPerfmon();

    //// debug print
    LogPrintf("mapBlockIndex.size() = %u\n",   mapBlockIndex.size());
    LogPrintf("chainActive.Height() = %d\n",   chainActive.Height());
#ifdef ENABLE_WALLET
    LogPrintf("setKeyPool.size() = %u\n",      pwalletMain ? pwalletMain->setKeyPool.size() : 0);
    LogPrintf("mapWallet.size() = %u\n",       pwalletMain ? pwalletMain->mapWallet.size() : 0);
    LogPrintf("mapAddressBook.size() = %u\n",  pwalletMain ? pwalletMain->mapAddressBook.size() : 0);
#endif

    StartNode(threadGroup);

#ifdef ENABLE_WALLET
    // Generate coins in the background
    if (pwalletMain)
        GenerateBitcoins(GetBoolArg("-gen", false), pwalletMain, GetArg("-genproclimit", 1));
#endif

    // ********************************************************* Step 12: finished

    SetRPCWarmupFinished();
    uiInterface.InitMessage(_("Done loading"));

#ifdef ENABLE_WALLET
    if (pwalletMain) {
        // Add wallet transactions that aren't already in a block to mapTransactions
        pwalletMain->ReacceptWalletTransactions();

        // Run a thread to flush wallet periodically
        threadGroup.create_thread(boost::bind(&ThreadFlushWalletDB, boost::ref(pwalletMain->strWalletFile)));
    }
#endif

    return !fRequestShutdown;
}