// Copyright (c) 2009-2010 Satoshi Nakamoto

// Copyright (c) 2009-2015 The Bitcoin Core developers

// Copyright (c) 2018 The NavCoin 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/navcoin-config.h>

#endif

#include <init.h>

#include <addrman.h>

#include <amount.h>

#include <chain.h>

#include <chainparams.h>

#include <checkpoints.h>

#include <compat/sanity.h>

#include <consensus/validation.h>

#include <httpserver.h>

#include <httprpc.h>

#include <kernel.h>

#include <key.h>

#include <main.h>

#include <miner.h>

#include <net.h>

#include <ntpclient.h>

#include <policy/policy.h>

#include <rpc/server.h>

#include <rpc/register.h>

#include <script/standard.h>

#include <script/sigcache.h>

#include <scheduler.h>

#include <timedata.h>

#include <txdb.h>

#include <txmempool.h>

#include <torcontrol.h>

#include <ui_interface.h>

#include <untar.h>

#include <util.h>

#include <utiltime.h>

#include <utilmoneystr.h>

#include <validationinterface.h>

#ifdef ENABLE_WALLET

#include <wallet/wallet.h>

#endif

#include <stdint.h>

#include <stdio.h>

#ifndef WIN32

#include <signal.h>

#endif

#include <boost/algorithm/string/classification.hpp>

#include <boost/algorithm/string/predicate.hpp>

#include <boost/algorithm/string/replace.hpp>

#include <boost/algorithm/string/split.hpp>

#include <boost/bind.hpp>

#include <boost/filesystem.hpp>

#include <boost/function.hpp>

#include <boost/interprocess/sync/file_lock.hpp>

#include <boost/thread.hpp>

#include <curl/curl.h>

#include <openssl/crypto.h>

#include <openssl/rsa.h>

#include <openssl/pem.h>

#include <openssl/aes.h>

#if ENABLE_ZMQ

#include <zmq/zmqnotificationinterface.h>

#endif

char *sPrivKey, *sPubKey;

using namespace std;

bool fFeeEstimatesInitialized = false;

static const bool DEFAULT_PROXYRANDOMIZE = true;

static const bool DEFAULT_REST_ENABLE = false;

static const bool DEFAULT_DISABLE_SAFEMODE = false;

static const bool DEFAULT_STOPAFTERBLOCKIMPORT = false;

unsigned int nMinerSleep;

#if ENABLE_ZMQ

static CZMQNotificationInterface* pzmqNotificationInterface = nullptr;

#endif

#ifdef WIN32

// Win32 LevelDB doesn't use filedescriptors, and the ones used for

// accessing block files don't count towards the 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";

static float fBootstrapProgress = 0.0;

static int xferinfo(void *p,

curl_off_t dltotal, curl_off_t dlnow,

curl_off_t ultotal, curl_off_t ulnow)

{

float fProgress = (float)dlnow/(float)dltotal*100.0f;

if (fProgress == fBootstrapProgress)

return 0;

uiInterface.InitMessage(strprintf("[BOOTSTRAP] Downloaded %" CURL_FORMAT_CURL_OFF_T "MB of %" CURL_FORMAT_CURL_OFF_T

"MB (%.2f%%)",

dlnow/(1024*1024), dltotal/(1024*1024), (float)dlnow/(float)dltotal*100.0f));

fprintf(stdout, "[BOOTSTRAP] Downloaded %" CURL_FORMAT_CURL_OFF_T "MB of %" CURL_FORMAT_CURL_OFF_T

"MB (%.2f%%) \r",

dlnow/(1024*1024), dltotal/(1024*1024), fProgress);

fBootstrapProgress = fProgress;

return 0;

}

size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {

size_t written;

written = fwrite(ptr, size, nmemb, stream);

return written;

}

//////////////////////////////////////////////////////////////////////////////

//

// 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.

//

std::atomic<bool> fRequestShutdown(false);

void StartShutdown()

{

fRequestShutdown = true;

}

bool ShutdownRequested()

{

return fRequestShutdown;

}

/**

* This is a minimally invasive approach to shutdown on LevelDB read errors from the

* chainstate, while keeping user interface out of the common library, which is shared

* between navcoind, and navcoin-qt and non-server tools.

*/

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 interpretation. Just exit immediately, as we can't

// continue anyway, and all writes should be atomic.

abort();

}

}

bool GetProposal(const uint256 &id, CFund::CProposal &proposal) const {

try {

return CCoinsViewBacked::GetProposal(id, proposal);

} 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());

abort();

}

}

bool GetPaymentRequest(const uint256 &id, CFund::CPaymentRequest &prequest) const {

try {

return CCoinsViewBacked::GetPaymentRequest(id, prequest);

} 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());

abort();

}

}

// Writes do not need similar protection, as failure to write is handled by the caller.

};

static CCoinsViewDB *pcoinsdbview = nullptr;

static CCoinsViewErrorCatcher *pcoinscatcher = nullptr;

static boost::scoped_ptr<ECCVerifyHandle> globalVerifyHandle;

void Interrupt(boost::thread_group& threadGroup)

{

InterruptHTTPServer();

InterruptHTTPRPC();

InterruptRPC();

InterruptREST();

InterruptTorControl();

threadGroup.interrupt_all();

}

void Shutdown()

{

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("navcoin-shutoff");

mempool.AddTransactionsUpdated(1);

StopHTTPRPC();

StopREST();

StopRPC();

StopHTTPServer();

#ifdef ENABLE_WALLET

if (pwalletMain)

pwalletMain->Flush(false);

#endif

StopNode();

StopTorControl();

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 != nullptr) {

FlushStateToDisk();

}

delete pcoinsTip;

pcoinsTip = nullptr;

delete pcoinscatcher;

pcoinscatcher = nullptr;

delete pcoinsdbview;

pcoinsdbview = nullptr;

delete pblocktree;

pblocktree = nullptr;

}

#ifdef ENABLE_WALLET

if (pwalletMain)

pwalletMain->Flush(true);

#endif

#if ENABLE_ZMQ

if (pzmqNotificationInterface) {

UnregisterValidationInterface(pzmqNotificationInterface);

delete pzmqNotificationInterface;

pzmqNotificationInterface = nullptr;

}

#endif

#ifndef WIN32

try {

boost::filesystem::remove(GetPidFile());

} catch (const boost::filesystem::filesystem_error& e) {

LogPrintf("%s: Unable to remove pidfile: %s\n", __func__, e.what());

}

#endif

UnregisterAllValidationInterfaces();

#ifdef ENABLE_WALLET

delete pwalletMain;

pwalletMain = nullptr;

#endif

globalVerifyHandle.reset();

ECC_Stop();

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)

{

fReopenLogFiles = 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;

}

void OnRPCStopped()

{

cvBlockChange.notify_all();

LogPrint("rpc", "RPC stopped.\n");

}

void OnRPCPreCommand(const CRPCCommand& cmd)

{

// Observe safe mode

string strWarning = GetWarnings("rpc");

if (strWarning != "" && !GetBoolArg("-disablesafemode", DEFAULT_DISABLE_SAFEMODE) &&

!cmd.okSafeMode)

throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);

}

std::string HelpMessage(HelpMessageMode mode)

{

const bool showDebug = GetBoolArg("-help-debug", false);

// When adding new options to the categories, please keep and ensure alphabetical ordering.

// Do not translate _(...) -help-debug options, Many technical terms, and only a very small audience, so is unnecessary stress to translators.

string strUsage = HelpMessageGroup(_("Options:"));

strUsage += HelpMessageOpt("-?", _("Print this help message and exit"));

strUsage += HelpMessageOpt("-version", _("Print version and exit"));

strUsage += HelpMessageOpt("-alertnotify=<cmd>", _("Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message)"));

strUsage += HelpMessageOpt("-blocknotify=<cmd>", _("Execute command when the best block changes (%s in cmd is replaced by block hash)"));

if (showDebug)

strUsage += HelpMessageOpt("-blocksonly", strprintf(_("Whether to operate in a blocks only mode (default: %u)"), DEFAULT_BLOCKSONLY));

strUsage += HelpMessageOpt("-bootstrap=<url>", _("Specifies an URL from where a bootstrapped copy of the blockchain would be downloaded"));

strUsage += HelpMessageOpt("-checkblocks=<n>", strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), DEFAULT_CHECKBLOCKS));

strUsage += HelpMessageOpt("-checklevel=<n>", strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), DEFAULT_CHECKLEVEL));

strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), NAVCOIN_CONF_FILENAME));

if (mode == HMM_NAVCOIND)

{

#ifndef WIN32

strUsage += HelpMessageOpt("-daemon", _("Run in the background as a daemon and accept commands"));

#endif

}

strUsage += HelpMessageOpt("-datadir=<dir>", _("Specify data directory"));

strUsage += HelpMessageOpt("-dbcache=<n>", strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache));

if (showDebug)

strUsage += HelpMessageOpt("-feefilter", strprintf("Tell other nodes to filter invs to us by our mempool min fee (default: %u)", DEFAULT_FEEFILTER));

strUsage += HelpMessageOpt("-loadblock=<file>", _("Imports blocks from external blk000??.dat file on startup"));

strUsage += HelpMessageOpt("-maxorphantx=<n>", strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS));

strUsage += HelpMessageOpt("-maxmempool=<n>", strprintf(_("Keep the transaction memory pool below <n> megabytes (default: %u)"), DEFAULT_MAX_MEMPOOL_SIZE));

strUsage += HelpMessageOpt("-mempoolexpiry=<n>", strprintf(_("Do not keep transactions in the mempool longer than <n> hours (default: %u)"), DEFAULT_MEMPOOL_EXPIRY));

strUsage += HelpMessageOpt("-minersleep=<n>", strprintf(_("Sets the default sleep for the staking thread (default: %u)"), 500));

strUsage += HelpMessageOpt("-mininputvalue=<n>", strprintf(_("Sets the minimum value for an output to be considered as a coinstake kernel candidate")));

strUsage += HelpMessageOpt("-par=<n>", strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"),

-GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));

#ifndef WIN32

strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), NAVCOIN_PID_FILENAME));

#endif

strUsage += HelpMessageOpt("-prune=<n>", strprintf(_("Reduce storage requirements by pruning (deleting) old blocks. This mode is incompatible with -txindex and -rescan. "

"Warning: Reverting this setting requires re-downloading the entire blockchain. "

"(default: 0 = disable pruning blocks, >%u = target size in MiB to use for block files)"), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));

strUsage += HelpMessageOpt("-reindex-chainstate", _("Rebuild chain state from the currently indexed blocks"));

strUsage += HelpMessageOpt("-reindex", _("Rebuild chain state and block index from the blk*.dat files on disk"));

#ifdef ENABLE_WALLET

strUsage += HelpMessageOpt("-staking=<bool>", _("Enables or disables the staking thread."));

#endif

#ifndef WIN32

strUsage += HelpMessageOpt("-sysperms", _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)"));

#endif

strUsage += HelpMessageOpt("-allindex", strprintf(_("Maintain all indexes supported (default: %u)"), false));

strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), DEFAULT_TXINDEX));

strUsage += HelpMessageOpt("-addressindex", strprintf(_("Maintain a full address index, used to query for the balance, txids and unspent outputs for addresses (default: %u)"), DEFAULT_ADDRESSINDEX));

strUsage += HelpMessageOpt("-timestampindex", strprintf(_("Maintain a timestamp index for block hashes, used to query blocks hashes by a range of timestamps (default: %u)"), DEFAULT_TIMESTAMPINDEX));

strUsage += HelpMessageOpt("-spentindex", strprintf(_("Maintain a full spent index, used to query the spending txid and input index for an outpoint (default: %u)"), DEFAULT_SPENTINDEX));

strUsage += HelpMessageGroup(_("Clock options:"));

strUsage += HelpMessageOpt("-ntpserver=<ip/host>", _("Adds a ntp server to use for clock syncronization"));

strUsage += HelpMessageOpt("-ntpminmeasures=<n>", strprintf(_("Min. number of valid requests to NTP servers (default: %u)"), MINIMUM_NTP_MEASURE));

strUsage += HelpMessageOpt("-ntptimeout=<n>", strprintf(_("Number of seconds to wait for a response from a NTP server (default: %u)"), DEFAULT_NTP_TIMEOUT));

strUsage += HelpMessageOpt("-maxtimeoffset=<n>", strprintf(_("Max number of seconds allowed as clock offset for a peer (default: %u)"), MAXIMUM_TIME_OFFSET));

strUsage += HelpMessageGroup(_("Connection options:"));

strUsage += HelpMessageOpt("-addnode=<ip>", _("Add a node to connect to and attempt to keep the connection open"));

strUsage += HelpMessageOpt("-addanonserver=<ip>", _("Add a NavTech node to use for private transactions"));

strUsage += HelpMessageOpt("-banscore=<n>", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), DEFAULT_BANSCORE_THRESHOLD));

strUsage += HelpMessageOpt("-bantime=<n>", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), DEFAULT_MISBEHAVING_BANTIME));

strUsage += HelpMessageOpt("-banversion=<string>", strprintf(_("Version of wallet to be banned")));

strUsage += HelpMessageOpt("-bind=<addr>", _("Bind to given address and always listen on it. Use [host]:port notation for IPv6"));

strUsage += HelpMessageOpt("-connect=<ip>", _("Connect only to the specified node(s)"));

strUsage += HelpMessageOpt("-devnet", _("Uses the devnet network"));

strUsage += HelpMessageOpt("-discover", _("Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)"));

strUsage += HelpMessageOpt("-dns", _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + strprintf(_("(default: %u)"), DEFAULT_NAME_LOOKUP));

strUsage += HelpMessageOpt("-dnsseed", _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)"));

strUsage += HelpMessageOpt("-externalip=<ip>", _("Specify your own public address"));

strUsage += HelpMessageOpt("-forcednsseed", strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), DEFAULT_FORCEDNSSEED));

strUsage += HelpMessageOpt("-listen", _("Accept connections from outside (default: 1 if no -proxy or -connect)"));

strUsage += HelpMessageOpt("-listenonion", strprintf(_("Automatically create Tor hidden service (default: %d)"), DEFAULT_LISTEN_ONION));

strUsage += HelpMessageOpt("-maxconnections=<n>", strprintf(_("Maintain at most <n> connections to peers (default: %u)"), DEFAULT_MAX_PEER_CONNECTIONS));

strUsage += HelpMessageOpt("-maxreceivebuffer=<n>", strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXRECEIVEBUFFER));

strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXSENDBUFFER));

strUsage += HelpMessageOpt("-maxtimeadjustment", strprintf(_("Maximum allowed median peer time offset adjustment. Local perspective of time may be influenced by peers forward or backward by this amount. (default: %u seconds)"), DEFAULT_MAX_TIME_ADJUSTMENT));

strUsage += HelpMessageOpt("-onion=<ip:port>", strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy"));

strUsage += HelpMessageOpt("-onlynet=<net>", _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)"));

strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), DEFAULT_PERMIT_BAREMULTISIG));

strUsage += HelpMessageOpt("-peerbloomfilters", strprintf(_("Support filtering of blocks and transaction with bloom filters (default: %u)"), DEFAULT_PEERBLOOMFILTERS));

strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u or devnet: %u)"), Params(CBaseChainParams::MAIN).GetDefaultPort(), Params(CBaseChainParams::TESTNET).GetDefaultPort(), Params(CBaseChainParams::DEVNET).GetDefaultPort()));

strUsage += HelpMessageOpt("-proxy=<ip:port>", _("Connect through SOCKS5 proxy"));

strUsage += HelpMessageOpt("-proxyrandomize", strprintf(_("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)"), DEFAULT_PROXYRANDOMIZE));

strUsage += HelpMessageOpt("-rejectversionbit=<n>", _("Reject a suggested version bit"));

strUsage += HelpMessageOpt("-acceptversionbit=<n>", _("Accept a suggested version bit"));

strUsage += HelpMessageOpt("-requirednssec", _("Requires DNS Sec for OpenAlias requests (default: true)"));

strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect"));

#ifdef ENABLE_WALLET

strUsage += HelpMessageOpt("-stakervote=<string>", _("Defines the staker vote to be attached to found blocks."));

#endif

strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT));

strUsage += HelpMessageOpt("-torcontrol=<ip>:<port>", strprintf(_("Tor control port to use if onion listening enabled (default: %s)"), DEFAULT_TOR_CONTROL));

strUsage += HelpMessageOpt("-torpassword=<pass>", _("Tor control port password (default: empty)"));

#ifdef USE_UPNP

#if USE_UPNP

strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening and no -proxy)"));

#else

strUsage += HelpMessageOpt("-upnp", strprintf(_("Use UPnP to map the listening port (default: %u)"), 0));

#endif

#endif

strUsage += HelpMessageOpt("-whitebind=<addr>", _("Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6"));

strUsage += HelpMessageOpt("-whitelist=<netmask>", _("Whitelist peers connecting from the given netmask or IP address. Can be specified multiple times.") +

" " + _("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"));

strUsage += HelpMessageOpt("-whitelistrelay", strprintf(_("Accept relayed transactions received from whitelisted peers even when not relaying transactions (default: %d)"), DEFAULT_WHITELISTRELAY));

strUsage += HelpMessageOpt("-whitelistforcerelay", strprintf(_("Force relay of transactions from whitelisted peers even they violate local relay policy (default: %d)"), DEFAULT_WHITELISTFORCERELAY));

strUsage += HelpMessageOpt("-maxuploadtarget=<n>", strprintf(_("Tries to keep outbound traffic under the given target (in MiB per 24h), 0 = no limit (default: %d)"), DEFAULT_MAX_UPLOAD_TARGET));

#ifdef ENABLE_WALLET

strUsage += CWallet::GetWalletHelpString(showDebug);

#endif

#if ENABLE_ZMQ

strUsage += HelpMessageGroup(_("ZeroMQ notification options:"));

strUsage += HelpMessageOpt("-zmqpubhashblock=<address>", _("Enable publish hash block in <address>"));

strUsage += HelpMessageOpt("-zmqpubhashtx=<address>", _("Enable publish hash transaction in <address>"));

strUsage += HelpMessageOpt("-zmqpubrawblock=<address>", _("Enable publish raw block in <address>"));

strUsage += HelpMessageOpt("-zmqpubrawtx=<address>", _("Enable publish raw transaction in <address>"));

#endif

strUsage += HelpMessageGroup(_("Debugging/Testing options:"));

strUsage += HelpMessageOpt("-uacomment=<cmt>", _("Append comment to the user agent string"));

if (showDebug)

{

strUsage += HelpMessageOpt("-checkblockindex", strprintf("Do a full consistency check for mapBlockIndex, setBlockIndexCandidates, chainActive and mapBlocksUnlinked occasionally. Also sets -checkmempool (default: %u)", Params(CBaseChainParams::MAIN).DefaultConsistencyChecks()));

strUsage += HelpMessageOpt("-checkmempool=<n>", strprintf("Run checks every <n> transactions (default: %u)", Params(CBaseChainParams::MAIN).DefaultConsistencyChecks()));

strUsage += HelpMessageOpt("-checkpoints", strprintf("Disable expensive verification for known chain history (default: %u)", DEFAULT_CHECKPOINTS_ENABLED));

strUsage += HelpMessageOpt("-disablesafemode", strprintf("Disable safemode, override a real safe mode event (default: %u)", DEFAULT_DISABLE_SAFEMODE));

strUsage += HelpMessageOpt("-testsafemode", strprintf("Force safe mode (default: %u)", DEFAULT_TESTSAFEMODE));

strUsage += HelpMessageOpt("-dropmessagestest=<n>", "Randomly drop 1 of every <n> network messages");

strUsage += HelpMessageOpt("-fuzzmessagestest=<n>", "Randomly fuzz 1 of every <n> network messages");

strUsage += HelpMessageOpt("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", DEFAULT_STOPAFTERBLOCKIMPORT));

strUsage += HelpMessageOpt("-limitancestorcount=<n>", strprintf("Do not accept transactions if number of in-mempool ancestors is <n> or more (default: %u)", DEFAULT_ANCESTOR_LIMIT));

strUsage += HelpMessageOpt("-limitancestorsize=<n>", strprintf("Do not accept transactions whose size with all in-mempool ancestors exceeds <n> kilobytes (default: %u)", DEFAULT_ANCESTOR_SIZE_LIMIT));

strUsage += HelpMessageOpt("-limitdescendantcount=<n>", strprintf("Do not accept transactions if any ancestor would have <n> or more in-mempool descendants (default: %u)", DEFAULT_DESCENDANT_LIMIT));

strUsage += HelpMessageOpt("-limitdescendantsize=<n>", strprintf("Do not accept transactions if any ancestor would have more than <n> kilobytes of in-mempool descendants (default: %u).", DEFAULT_DESCENDANT_SIZE_LIMIT));

}

string debugCategories = "addrman, alert, bench, coindb, db, http, libevent, lock, mempool, mempoolrej, net, proxy, prune, rand, reindex, rpc, selectcoins, tor, zmq"; // Don't translate these and qt below

if (mode == HMM_NAVCOIN_QT)

debugCategories += ", qt";

strUsage += HelpMessageOpt("-debug=<category>", strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + ". " +

_("If <category> is not supplied or if <category> = 1, output all debugging information.") + _("<category> can be:") + " " + debugCategories + ".");

if (showDebug)

strUsage += HelpMessageOpt("-nodebug", "Turn off debugging messages, same as -debug=0");

strUsage += HelpMessageOpt("-help-debug", _("Show all debugging options (usage: --help -help-debug)"));

strUsage += HelpMessageOpt("-logips", strprintf(_("Include IP addresses in debug output (default: %u)"), DEFAULT_LOGIPS));

strUsage += HelpMessageOpt("-logtimestamps", strprintf(_("Prepend debug output with timestamp (default: %u)"), DEFAULT_LOGTIMESTAMPS));

if (showDebug)

{

strUsage += HelpMessageOpt("-logtimemicros", strprintf("Add microsecond precision to debug timestamps (default: %u)", DEFAULT_LOGTIMEMICROS));

strUsage += HelpMessageOpt("-mocktime=<n>", "Replace actual time with <n> seconds since epoch (default: 0)");

strUsage += HelpMessageOpt("-limitfreerelay=<n>", strprintf("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default: %u)", DEFAULT_LIMITFREERELAY));

strUsage += HelpMessageOpt("-relaypriority", strprintf("Require high priority for relaying free or low-fee transactions (default: %u)", DEFAULT_RELAYPRIORITY));

strUsage += HelpMessageOpt("-maxsigcachesize=<n>", strprintf("Limit size of signature cache to <n> MiB (default: %u)", DEFAULT_MAX_SIG_CACHE_SIZE));

strUsage += HelpMessageOpt("-maxtipage=<n>", strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)", DEFAULT_MAX_TIP_AGE));

}

strUsage += HelpMessageOpt("-minrelaytxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for relaying, mining and transaction creation"),

CURRENCY_UNIT));

strUsage += HelpMessageOpt("-maxtxfee=<amt>", strprintf(_("Maximum total fees (in %s) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions"),

CURRENCY_UNIT));

strUsage += HelpMessageOpt("-print", _("Send trace/debug info to console instead of debug.log file"));

strUsage += HelpMessageOpt("-printtoconsole", _("Send trace/debug info to console instead of debug.log file"));

if (showDebug)

{

strUsage += HelpMessageOpt("-printpriority", strprintf("Log transaction priority and fee per kB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY));

}

strUsage += HelpMessageOpt("-shrinkdebugfile", _("Shrink debug.log file on client startup (default: 1 when no -debug)"));

AppendParamsHelpMessages(strUsage, showDebug);

strUsage += HelpMessageGroup(_("Node relay options:"));

if (showDebug)

strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !Params(CBaseChainParams::TESTNET).RequireStandard()));

strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Equivalent bytes per sigop in transactions for relay and mining (default: %u)"), DEFAULT_BYTES_PER_SIGOP));

strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), DEFAULT_ACCEPT_DATACARRIER));

strUsage += HelpMessageOpt("-datacarriersize", strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY));

strUsage += HelpMessageOpt("-mempoolreplacement", strprintf(_("Enable transaction replacement in the memory pool (default: %u)"), DEFAULT_ENABLE_REPLACEMENT));

strUsage += HelpMessageGroup(_("Block creation options:"));

strUsage += HelpMessageOpt("-blockmaxweight=<n>", strprintf(_("Set maximum BIP141 block weight (default: %d)"), DEFAULT_BLOCK_MAX_WEIGHT));

strUsage += HelpMessageOpt("-blockmaxsize=<n>", strprintf(_("Set maximum block size in bytes (default: %d)"), DEFAULT_BLOCK_MAX_SIZE));

strUsage += HelpMessageOpt("-blockprioritysize=<n>", strprintf(_("Set maximum size of high-priority/low-fee transactions in bytes (default: %d)"), DEFAULT_BLOCK_PRIORITY_SIZE));

if (showDebug)

strUsage += HelpMessageOpt("-blockversion=<n>", "Override block version to test forking scenarios");

strUsage += HelpMessageGroup(_("RPC server options:"));

strUsage += HelpMessageOpt("-server", _("Accept command line and JSON-RPC commands"));

strUsage += HelpMessageOpt("-rest", strprintf(_("Accept public REST requests (default: %u)"), DEFAULT_REST_ENABLE));

strUsage += HelpMessageOpt("-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)"));

strUsage += HelpMessageOpt("-rpccookiefile=<loc>", _("Location of the auth cookie (default: data dir)"));

strUsage += HelpMessageOpt("-rpcuser=<user>", _("Username for JSON-RPC connections"));

strUsage += HelpMessageOpt("-rpcpassword=<pw>", _("Password for JSON-RPC connections"));

strUsage += HelpMessageOpt("-rpcauth=<userpw>", _("Username and hashed password for JSON-RPC connections. The field <userpw> comes in the format: <USERNAME>:<SALT>$<HASH>. A canonical python script is included in share/rpcuser. This option can be specified multiple times"));

strUsage += HelpMessageOpt("-rpcport=<port>", strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u or devnet: %u)"), BaseParams(CBaseChainParams::MAIN).RPCPort(), BaseParams(CBaseChainParams::TESTNET).RPCPort(), BaseParams(CBaseChainParams::DEVNET).RPCPort()));

strUsage += HelpMessageOpt("-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"));

strUsage += HelpMessageOpt("-rpcthreads=<n>", strprintf(_("Set the number of threads to service RPC calls (default: %d)"), DEFAULT_HTTP_THREADS));

strUsage += HelpMessageGroup(_("GUI options:"));

strUsage += HelpMessageOpt("-updatefiatperiod=<miliseconds>", _("Sets the interval in miliseconds to update the fiat price from CoinMarketcap. Min. 120000"));

if (showDebug) {

strUsage += HelpMessageOpt("-rpcworkqueue=<n>", strprintf("Set the depth of the work queue to service RPC calls (default: %d)", DEFAULT_HTTP_WORKQUEUE));

strUsage += HelpMessageOpt("-rpcservertimeout=<n>", strprintf("Timeout during HTTP requests (default: %d)", DEFAULT_HTTP_SERVER_TIMEOUT));

}

strUsage += HelpMessageOpt("-headerspamfilter=<n>", strprintf(_("Use header spam filter (default: %u)"), DEFAULT_HEADER_SPAM_FILTER));

strUsage += HelpMessageOpt("-headerspamfiltermaxsize=<n>", strprintf(_("Maximum size of the list of indexes in the header spam filter (default: %u)"), DEFAULT_HEADER_SPAM_FILTER_MAX_SIZE));

strUsage += HelpMessageOpt("-headerspamfiltermaxavg=<n>", strprintf(_("Maximum average size of an index occurrence in the header spam filter (default: %u)"), DEFAULT_HEADER_SPAM_FILTER_MAX_AVG));

strUsage += HelpMessageOpt("-headerspamfilterignoreport=<n>", strprintf("Ignore the port in the ip address when looking for header spam, determine whether or not multiple nodes can be on the same IP (default: %u)", DEFAULT_HEADER_SPAM_FILTER_IGNORE_PORT));

return strUsage;

}

std::string LicenseInfo()

{

const std::string URL_SOURCE_CODE = "<https://github.com/navcoin/navcoin-core>";

const std::string URL_WEBSITE = "<https://navcoin.org>";

// todo: remove urls from translations on next change

return CopyrightHolders(strprintf(_("Copyright (C) %i-%i"), 2009, COPYRIGHT_YEAR) + " ") + "\n" +

"\n" +

strprintf(_("Please contribute if you find %s useful. "

"Visit %s for further information about the software."),

PACKAGE_NAME, URL_WEBSITE) +

"\n" +

strprintf(_("The source code is available from %s."),

URL_SOURCE_CODE) +

"\n" +

"\n" +

_("This is experimental software.") + "\n" +

_("Distributed under the MIT software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.") + "\n" +

"\n" +

_("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" +

_("Copyright (c) 2014-2017, The Monero Project") + "\n" +

"\n" +

_("All rights reserved.") + "\n" +

"\n" +

_("Redistribution and use in source and binary forms, with or without modification, are") + "\n" +

_("permitted provided that the following conditions are met:") + "\n" +

"\n" +

_("1. Redistributions of source code must retain the above copyright notice, this list of") + "\n" +

_(" conditions and the following disclaimer.") + "\n" +

"\n" +

_("2. Redistributions in binary form must reproduce the above copyright notice, this list") + "\n" +

_(" of conditions and the following disclaimer in the documentation and/or other") + "\n" +

_(" materials provided with the distribution.") + "\n" +

"\n" +

_("3. Neither the name of the copyright holder nor the names of its contributors may be") + "\n" +

_(" used to endorse or promote products derived from this software without specific") + "\n" +

_(" prior written permission.") + "\n" +

"\n" +

_("THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND ANY") + "\n" +

_(" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF") + "\n" +

_(" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL") + "\n" +

_(" THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,") + "\n" +

_(" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,") + "\n" +

_(" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS") + "\n" +

_(" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,") + "\n" +

_(" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF") + "\n" +

_(" THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.") + "\n" +

"\n";

}

static void BlockNotifyCallback(bool initialSync, const CBlockIndex *pBlockIndex)

{

if (initialSync || !pBlockIndex)

return;

std::string strCmd = GetArg("-blocknotify", "");

boost::replace_all(strCmd, "%s", pBlockIndex->GetBlockHash().GetHex());

boost::thread t(runCommand, strCmd); // thread runs free

}

struct CImportingNow

{

CImportingNow() {

assert(fImporting == false);

fImporting = true;

}

~CImportingNow() {

assert(fImporting == true);

fImporting = false;

}

};

// If we're using -prune with -reindex, then delete block files that will be ignored by the

// reindex. Since reindexing works by starting at block file 0 and looping until a blockfile

// is missing, do the same here to delete any later block files after a gap. Also delete all

// rev files since they'll be rewritten by the reindex anyway. This ensures that vinfoBlockFile

// is in sync with what's actually on disk by the time we start downloading, so that pruning

// works correctly.

void CleanupBlockRevFiles()

{

using namespace boost::filesystem;

map<string, path> mapBlockFiles;

// Glob all blk?????.dat and rev?????.dat files from the blocks directory.

// Remove the rev files immediately and insert the blk file paths into an

// ordered map keyed by block file index.

LogPrintf("Removing unusable blk?????.dat and rev?????.dat files for -reindex with -prune\n");

path blocksdir = GetDataDir() / "blocks";

for (directory_iterator it(blocksdir); it != directory_iterator(); it++) {

if (is_regular_file(*it) &&

it->path().filename().string().length() == 12 &&

it->path().filename().string().substr(8,4) == ".dat")

{

if (it->path().filename().string().substr(0,3) == "blk")

mapBlockFiles[it->path().filename().string().substr(3,5)] = it->path();

else if (it->path().filename().string().substr(0,3) == "rev")

remove(it->path());

}

}

// Remove all block files that aren't part of a contiguous set starting at

// zero by walking the ordered map (keys are block file indices) by

// keeping a separate counter. Once we hit a gap (or if 0 doesn't exist)

// start removing block files.

int nContigCounter = 0;

for(const PAIRTYPE(string, path)& item: mapBlockFiles) {

if (atoi(item.first) == nContigCounter) {

nContigCounter++;

continue;

}

remove(item.second);

}

}

void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)

{

const CChainParams& chainparams = Params();

RenameThread("navcoin-loadblk");

CImportingNow imp;

// -reindex

if (fReindex) {

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(chainparams, 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(chainparams);

}

// hardcoded $DATADIR/bootstrap.dat

boost::filesystem::path pathBootstrap = GetDataDir() / "bootstrap.dat";

if (boost::filesystem::exists(pathBootstrap)) {

FILE *file = fopen(pathBootstrap.string().c_str(), "rb");

if (file) {

boost::filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";

LogPrintf("Importing bootstrap.dat...\n");

LoadExternalBlockFile(chainparams, file);

RenameOver(pathBootstrap, pathBootstrapOld);

} else {

LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());

}

}

// -loadblock=

for(const boost::filesystem::path& path: vImportFiles) {

FILE *file = fopen(path.string().c_str(), "rb");

if (file) {

LogPrintf("Importing blocks file %s...\n", path.string());

LoadExternalBlockFile(chainparams, file);

} else {

LogPrintf("Warning: Could not open blocks file %s\n", path.string());

}

}

// scan for better chains in the block chain database, that are not yet connected in the active best chain

CValidationState state;

if (!ActivateBestChain(state, chainparams)) {

LogPrintf("Failed to connect best block");

StartShutdown();

}

if (GetBoolArg("-stopafterblockimport", DEFAULT_STOPAFTERBLOCKIMPORT)) {

LogPrintf("Stopping after block import\n");

StartShutdown();

}

}

/** Sanity checks

* Ensure that NavCoin is running in a usable environment with all

* necessary library support.

*/

bool InitSanityCheck(void)

{

if(!ECC_InitSanityCheck()) {

InitError("Elliptic curve cryptography sanity check failure. Aborting.");

return false;

}

if (!glibc_sanity_test() || !glibcxx_sanity_test())

return false;

return true;

}

bool AppInitServers(boost::thread_group& threadGroup)

{

RPCServer::OnStopped(&OnRPCStopped);

RPCServer::OnPreCommand(&OnRPCPreCommand);

if (!InitHTTPServer())

return false;

if (!StartRPC())

return false;

if (!StartHTTPRPC())

return false;

if (GetBoolArg("-rest", DEFAULT_REST_ENABLE) && !StartREST())

return false;

if (!StartHTTPServer())

return false;

return true;

}

// Parameter interaction based on rules

void InitParameterInteraction()

{

// when specifying an explicit binding address, you want to listen on it

// even when -connect or -proxy is specified

if (mapArgs.count("-bind")) {

if (SoftSetBoolArg("-listen", true))

LogPrintf("%s: parameter interaction: -bind set -> setting -listen=1\n", __func__);

}

if (mapArgs.count("-whitebind")) {

if (SoftSetBoolArg("-listen", true))

LogPrintf("%s: parameter interaction: -whitebind set -> setting -listen=1\n", __func__);

}

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("%s: parameter interaction: -connect set -> setting -dnsseed=0\n", __func__);

if (SoftSetBoolArg("-listen", false))

LogPrintf("%s: parameter interaction: -connect set -> setting -listen=0\n", __func__);

}

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("%s: parameter interaction: -proxy set -> setting -discover=0\n", __func__);

}

if (!GetBoolArg("-listen", DEFAULT_LISTEN)) {

// do not map ports or try to retrieve public IP when not listening (pointless)

if (SoftSetBoolArg("-upnp", false))

LogPrintf("%s: parameter interaction: -listen=0 -> setting -upnp=0\n", __func__);

if (SoftSetBoolArg("-discover", false))

LogPrintf("%s: parameter interaction: -listen=0 -> setting -discover=0\n", __func__);

if (SoftSetBoolArg("-listenonion", false))

LogPrintf("%s: parameter interaction: -listen=0 -> setting -listenonion=0\n", __func__);

}

if (mapArgs.count("-externalip")) {

// if an explicit public IP is specified, do not try to find others

if (SoftSetBoolArg("-discover", false))

LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);

}

if (GetBoolArg("-salvagewallet", false)) {

// Rewrite just private keys: rescan to find transactions

if (SoftSetBoolArg("-rescan", true))

LogPrintf("%s: parameter interaction: -salvagewallet=1 -> setting -rescan=1\n", __func__);

}

// -zapwallettx implies a rescan

if (GetBoolArg("-zapwallettxes", false)) {

if (SoftSetBoolArg("-rescan", true))

LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);

}

// -importmnemonic implies a rescan

if (mapArgs.count("-importmnemonic")) {

if (SoftSetBoolArg("-rescan", true))

LogPrintf("%s: parameter interaction: -importmnemonic=\"word list\" -> setting -rescan=1\n", __func__);

}

// disable walletbroadcast and whitelistrelay in blocksonly mode

if (GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY)) {

if (SoftSetBoolArg("-whitelistrelay", false))

LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -whitelistrelay=0\n", __func__);

#ifdef ENABLE_WALLET

if (SoftSetBoolArg("-walletbroadcast", false))

LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -walletbroadcast=0\n", __func__);

#endif

}

// Forcing relay from whitelisted hosts implies we will accept relays from them in the first place.

if (GetBoolArg("-whitelistforcerelay", DEFAULT_WHITELISTFORCERELAY)) {

if (SoftSetBoolArg("-whitelistrelay", true))

LogPrintf("%s: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1\n", __func__);

}

}

static std::string ResolveErrMsg(const char * const optname, const std::string& strBind)

{

return strprintf(_("Cannot resolve -%s address: '%s'"), optname, strBind);

}

void InitLogging()

{

fPrintToConsole = GetBoolArg("-print", GetBoolArg("-printtoconsole", false));

fLogTimestamps = GetBoolArg("-logtimestamps", DEFAULT_LOGTIMESTAMPS);

fLogTimeMicros = GetBoolArg("-logtimemicros", DEFAULT_LOGTIMEMICROS);

fLogIPs = GetBoolArg("-logips", DEFAULT_LOGIPS);

LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");

LogPrintf("NavCoin version %s\n", FormatFullVersion());

}

void DownloadBlockchain(std::string url)

{

CURL *curl;

FILE *fp, *a;

CURLcode res;

curl = curl_easy_init();

if (curl)

{

std::string sDownload = (GetDataDir(true).string() + "/bootstrap_temp.tar");

fp = fopen(sDownload.c_str(),"wb");

curl_easy_setopt(curl, CURLOPT_URL, url.c_str());

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);

curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);

curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);

curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, xferinfo);

curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);

res = curl_easy_perform(curl);

if (res != CURLE_OK)

{

curl_easy_cleanup(curl);

curl_global_cleanup();

throw std::runtime_error("Failed!");

}

else

{

curl_easy_cleanup(curl);

curl_global_cleanup();

int i=fclose(fp);

if(i==0)

{

a = fopen(sDownload.c_str(), "rb");

if (a == nullptr)

{

boost::filesystem::remove_all(sDownload);

throw std::runtime_error("Unable to open downloaded file.");

}

else

{

boost::filesystem::remove_all(GetDataDir(true) / "blocks");

boost::filesystem::remove_all(GetDataDir(true) / "chainstate");

boost::filesystem::remove_all(GetDataDir(true) / "cfund");

bool fOk = untar(a, sDownload.c_str());

fclose(a);

boost::filesystem::remove_all(sDownload);

if(!fOk)

throw std::runtime_error("Could not extract data.");

}

}

else

{

throw std::runtime_error("Failed!");

}

}

}

else

{

throw std::runtime_error("Failed!");

}

}

/** Initialize navcoin.

* @pre Parameters should be parsed and config file should be read.

*/

bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)

{

// ********************************************************* Step 0: download bootstrap

std::string sBootstrap = GetArg("-bootstrap","");

if(sBootstrap != "")

{

RemoveConfigFile("bootstrap");

uiInterface.InitMessage(strprintf("Trying to download from %s", sBootstrap.c_str()));

try

{

DownloadBlockchain(sBootstrap);

}

catch(const std::exception& e)

{

return InitError(strprintf("[BOOTSTRAP] %s", e.what()));

}

uiInterface.InitMessage("Downloaded");

}