// Copyright (c) 2009-2010 Satoshi Nakamoto

#include <vector>

#include <thread>

// Copyright (c) 2009-2014 The Bitcoin Core developers

// Copyright (c) 2018-2022 The Flux Developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or https://www.opensource.org/licenses/mit-license.php.

#if defined(HAVE_CONFIG_H)

#include "config/bitcoin-config.h"

#endif

#include "init.h"

#include "crypto/common.h"

#include "addrman.h"

#include "amount.h"

#include "checkpoints.h"

#include "compat/sanity.h"

#include "consensus/upgrades.h"

#include "consensus/validation.h"

#include "httpserver.h"

#include "httprpc.h"

#include "key.h"

#include "fluxnode/benchmarks.h"

#ifdef ENABLE_MINING

#include "key_io.h"

#endif

#include "main.h"

#include "mempool_limit.h"

#include "metrics.h"

#include "miner.h"

#include "pon/pon-minter.h"

#include "net.h"

#include "checkqueue.h"

#include "rpc/server.h"

#include "rpc/register.h"

#include "script/standard.h"

#include "script/sigcache.h"

#include "scheduler.h"

#include "txdb.h"

#include "torcontrol.h"

#include "ui_interface.h"

#include "util.h"

#include "util/threadinterrupt.h"

#include "utilmoneystr.h"

#include "validationinterface.h"

#include "fluxnode/fluxnodeconfig.h"

#include "fluxnode/fluxnode.h"

#include "fluxnode/fluxnodecachedb.h"

#include "fluxnode/obfuscation.h"

#include "fluxnode/activefluxnode.h"

#include "snapshot/snapshotdb.h"

#ifdef ENABLE_WALLET

#include "wallet/wallet.h"

#include "wallet/walletdb.h"

#endif

#include <stdint.h>

#include <stdio.h>

#ifndef WIN32

#include <signal.h>

#include <sys/stat.h>

#endif

#include <chrono>

#include <filesystem>

#include "util/fs.h"

#include <openssl/crypto.h>

#include <stdlib.h>

#if ENABLE_ZMQ

#include "zmq/zmqnotificationinterface.h"

#endif

#if ENABLE_PROTON

#include "amqp/amqpnotificationinterface.h"

#endif

#include "librustzcash.h"

using namespace std;

class CThreadInterrupt;

extern void ThreadSendAlert(CThreadInterrupt& interrupt);

ZCJoinSplit* pfluxParams = NULL;

#ifdef ENABLE_WALLET

CWallet* pwalletMain = NULL;

#endif

bool fFeeEstimatesInitialized = false;

#if ENABLE_ZMQ

static CZMQNotificationInterface* pzmqNotificationInterface = NULL;

#endif

#if ENABLE_PROTON

static AMQPNotificationInterface* pAMQPNotificationInterface = NULL;

#endif

#ifdef WIN32

// Win32 LevelDB doesn't use file descriptors, 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";

CClientUIInterface uiInterface; // Declared but not defined in ui_interface.h

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

//

// Shutdown

//

//

// Thread management and startup/shutdown:

//

// The network-processing threads are all part of a thread group

// created by AppInit().

//

// 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().

//

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

void StartShutdown()

{

fRequestShutdown = true;

}

bool ShutdownRequested()

{

return fRequestShutdown;

}

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();

}

}

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

};

static CCoinsViewDB *pcoinsdbview = NULL;

static CCoinsViewErrorCatcher *pcoinscatcher = NULL;

static std::unique_ptr<ECCVerifyHandle> globalVerifyHandle;

// Global scheduler pointer

static CScheduler* g_scheduler = nullptr;

// Global thread interrupts

static CThreadInterrupt g_scheduler_interrupt;

static CThreadInterrupt g_metrics_interrupt;

static CThreadInterrupt g_txnotify_interrupt;

static CThreadInterrupt g_sendalert_interrupt;

void Interrupt(std::vector<std::thread>& threadGroup)

{

InterruptHTTPServer();

InterruptHTTPRPC();

InterruptRPC();

InterruptREST();

InterruptTorControl();

// Stop script verification threads (16 threads waiting on scriptcheckqueue)

StopScriptCheckQueue();

// Stop the scheduler first, before interrupting other threads

// This must happen before WaitForShutdown() joins threads

if (g_scheduler) {

g_scheduler->stop();

}

// Interrupt all background threads

g_scheduler_interrupt();

g_metrics_interrupt();

g_txnotify_interrupt();

g_sendalert_interrupt();

// Release network semaphores so threads can exit

// This MUST be called before joining threads to prevent deadlock

StopNode();

}

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("flux-shutoff");

mempool.AddTransactionsUpdated(1);

StopHTTPRPC();

StopREST();

StopRPC();

StopHTTPServer();

#ifdef ENABLE_WALLET

if (pwalletMain)

pwalletMain->Flush(false);

#endif

#ifdef ENABLE_MINING

GenerateBitcoins(false, 0, Params());

#endif

StopPONMinter();

// StopNode() is now called in Interrupt() before joining threads to release semaphores

StopTorControl();

UnregisterNodeSignals(GetNodeSignals());

if (fFeeEstimatesInitialized)

{

std::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;

delete pFluxnodeDB;

pFluxnodeDB = NULL;

delete pSnapshotDB;

pSnapshotDB = NULL;

}

#ifdef ENABLE_WALLET

if (pwalletMain)

pwalletMain->Flush(true);

#endif

#if ENABLE_ZMQ

if (pzmqNotificationInterface) {

UnregisterValidationInterface(pzmqNotificationInterface);

delete pzmqNotificationInterface;

pzmqNotificationInterface = NULL;

}

#endif

#if ENABLE_PROTON

if (pAMQPNotificationInterface) {

UnregisterValidationInterface(pAMQPNotificationInterface);

delete pAMQPNotificationInterface;

pAMQPNotificationInterface = NULL;

}

#endif

#ifndef WIN32

try {

std::filesystem::remove(GetPidFile());

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

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

}

#endif

UnregisterAllValidationInterfaces();

#ifdef ENABLE_WALLET

delete pwalletMain;

pwalletMain = NULL;

#endif

delete pfluxParams;

pfluxParams = NULL;

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)

{

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;

}

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", false) &&

!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("-?", _("This help message"));

strUsage += HelpMessageOpt("-alerts", strprintf(_("Receive and display P2P network alerts (default: %u)"), DEFAULT_ALERTS));

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)"));

strUsage += HelpMessageOpt("-checkblocks=<n>", strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), 288));

strUsage += HelpMessageOpt("-checklevel=<n>", strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), 3));

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

if (mode == HMM_BITCOIND)

{

#if !defined(WIN32)

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

#endif

}

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

strUsage += HelpMessageOpt("-exportdir=<dir>", _("Specify directory to be used when exporting data"));

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

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("-mempooltxinputlimit=<n>", _("[DEPRECATED FROM OVERWINTER] Set the maximum number of transparent inputs in a transaction that the mempool will accept (default: 0 = no limit applied)"));

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)"), "fluxd.pid"));

#endif

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

"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", _("Rebuild block chain index from current blk000??.dat files on startup"));

#if !defined(WIN32)

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

#endif

strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), 0));

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

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

strUsage += HelpMessageOpt("-banscore=<n>", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), 100));

strUsage += HelpMessageOpt("-bantime=<n>", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), 86400));

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("-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") + " " + _("(default: 1)"));

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)"), 0));

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)"), 5000));

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

strUsage += HelpMessageOpt("-mempoolevictionmemoryminutes=<n>", strprintf(_("The number of minutes before allowing rejected transactions to re-enter the mempool. (default: %u)"), DEFAULT_MEMPOOL_EVICTION_MEMORY_MINUTES));

strUsage += HelpMessageOpt("-mempooltxcostlimit=<n>",strprintf(_("An upper bound on the maximum size in bytes of all transactions in the mempool. (default: %s)"), DEFAULT_MEMPOOL_TOTAL_COST_LIMIT));

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)"), 1));

strUsage += HelpMessageOpt("-peerbloomfilters", strprintf(_("Support filtering of blocks and transaction with Bloom filters (default: %u)"), 1));

if (showDebug)

strUsage += HelpMessageOpt("-enforcenodebloom", strprintf("Enforce minimum protocol version to limit use of Bloom filters (default: %u)", 0));

strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 16125, 26125));

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)"), 1));

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

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)"));

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"));

#ifdef ENABLE_WALLET

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

strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));

strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), 100));

strUsage += HelpMessageOpt("-migration", _("Enable the Sprout to Sapling migration"));

strUsage += HelpMessageOpt("-migrationdestaddress=<zaddr>", _("Set the Sapling migration address"));

if (showDebug)

strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)",

CURRENCY_UNIT, FormatMoney(CWallet::minTxFee.GetFeePerK())));

strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),

CURRENCY_UNIT, FormatMoney(payTxFee.GetFeePerK())));

strUsage += HelpMessageOpt("-rescan", _("Rescan the block chain for missing wallet transactions") + " " + _("on startup"));

strUsage += HelpMessageOpt("-salvagewallet", _("Attempt to recover private keys from a corrupt wallet.dat") + " " + _("on startup"));

strUsage += HelpMessageOpt("-sendfreetransactions", strprintf(_("Send transactions as zero-fee transactions if possible (default: %u)"), 0));

strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), 1));

strUsage += HelpMessageOpt("-txconfirmtarget=<n>", strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), DEFAULT_TX_CONFIRM_TARGET));

strUsage += HelpMessageOpt("-txexpirydelta", strprintf(_("Set the number of blocks after which a transaction that has not been mined will become invalid (min: %u, default: %u)"), TX_EXPIRING_SOON_THRESHOLD + 1, DEFAULT_TX_EXPIRY_DELTA));

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

CURRENCY_UNIT, FormatMoney(maxTxFee)));

strUsage += HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format") + " " + _("on startup"));

strUsage += HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), "wallet.dat"));

strUsage += HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), true));

strUsage += HelpMessageOpt("-walletnotify=<cmd>", _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)"));

strUsage += HelpMessageOpt("-zapwallettxes=<mode>", _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") +

" " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)"));

#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>"));

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

strUsage += HelpMessageOpt("-zmqpubchainreorg=<address>", _("Enable publish chain reorganization in <address>"));

strUsage += HelpMessageOpt("-zmqpubfluxnodelistdelta=<address>", _("Enable publish FluxNode list delta in <address>"));

#endif

#if ENABLE_PROTON

strUsage += HelpMessageGroup(_("AMQP 1.0 notification options:"));

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

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

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

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

#endif

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

if (showDebug)

{

strUsage += HelpMessageOpt("-checkpoints", strprintf("Disable expensive verification for known chain history (default: %u)", 1));

strUsage += HelpMessageOpt("-dblogsize=<n>", strprintf("Flush database activity from memory pool to disk log every <n> megabytes (default: %u)", 100));

strUsage += HelpMessageOpt("-disablesafemode", strprintf("Disable safemode, override a real safe mode event (default: %u)", 0));

strUsage += HelpMessageOpt("-testsafemode", strprintf("Force safe mode (default: %u)", 0));

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("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", 1));

strUsage += HelpMessageOpt("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", 0));

strUsage += HelpMessageOpt("-nuparams=hexBranchId:activationHeight", "Use given activation height for specified network upgrade (regtest-only)");

}

string debugCategories = "addrman, alert, bench, coindb, db, estimatefee, http, libevent, lock, mempool, net, partitioncheck, pow, proxy, prune, "

"rand, reindex, rpc, selectcoins, tor, zmq, zrpc, zrpcunsafe (implies zrpc)"; // Don't translate these

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 + ".");

strUsage += HelpMessageOpt("-experimentalfeatures", _("Enable use of experimental features"));

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

strUsage += HelpMessageOpt("-logips", strprintf(_("Include IP addresses in debug output (default: %u)"), 0));

strUsage += HelpMessageOpt("-logtimestamps", strprintf(_("Prepend debug output with timestamp (default: %u)"), 1));

if (showDebug)

{

strUsage += HelpMessageOpt("-limitfreerelay=<n>", strprintf("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default: %u)", 500));

strUsage += HelpMessageOpt("-relaypriority", strprintf("Require high priority for relaying free or low-fee transactions (default: %u)", 0));

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 (default: %s)"),

CURRENCY_UNIT, FormatMoney(::minRelayTxFee.GetFeePerK())));

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)", 0));

strUsage += HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", 1));

strUsage += HelpMessageOpt("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. "

"This is intended for regression testing tools and app development.");

}

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

strUsage += HelpMessageOpt("-testnet", _("Use the test network"));

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

strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1));

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

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

strUsage += HelpMessageOpt("-blockminsize=<n>", strprintf(_("Set minimum block size in bytes (default: %u)"), 0));

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 (GetBoolArg("-help-debug", false))

strUsage += HelpMessageOpt("-blockversion=<n>", strprintf("Override block version to test forking scenarios (default: %d)", (int)CBlock::CURRENT_VERSION));

#ifdef ENABLE_MINING

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

strUsage += HelpMessageOpt("-gen", strprintf(_("Generate coins (default: %u)"), 0));

strUsage += HelpMessageOpt("-genproclimit=<n>", strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), 1));

strUsage += HelpMessageOpt("-ponminter", _("Enable PON minting for testing (testnet only, allows minting without being a fluxnode, default: false)"));

strUsage += HelpMessageOpt("-equihashsolver=<name>", _("Specify the Equihash solver to be used if enabled (default: \"default\")"));

strUsage += HelpMessageOpt("-mineraddress=<addr>", _("Send mined coins to a specific single address"));

strUsage += HelpMessageOpt("-minetolocalwallet", strprintf(

_("Require that mined blocks use a coinbase address in the local wallet (default: %u)"),

#ifdef ENABLE_WALLET

1

#else

0

#endif

));

#endif

strUsage += HelpMessageOpt("-defaultchangeaddressmainnet", _("Default Change address to be used when sendmany rpc call is used (Mainnet Only)"));

strUsage += HelpMessageOpt("-defaultchangeaddresstestnet", _("Default Change address to be used when sendmany rpc call is used (Testnet Only)"));

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)"), 0));

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

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

strUsage += HelpMessageOpt("-rpcport=<port>", strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), 16124, 26124));

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));

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));

}

// Disabled until we can lock notes and also tune performance of the prover which by default uses multiple threads

//strUsage += HelpMessageOpt("-rpcasyncthreads=<n>", strprintf(_("Set the number of threads to service Async RPC calls (default: %d)"), 1));

if (mode == HMM_BITCOIND) {

strUsage += HelpMessageGroup(_("Metrics Options (only if -daemon and -printtoconsole are not set):"));

strUsage += HelpMessageOpt("-showmetrics", _("Show metrics on stdout (default: 1 if running in a console, 0 otherwise)"));

strUsage += HelpMessageOpt("-metricsui", _("Set to 1 for a persistent metrics screen, 0 for sequential metrics output (default: 1 if running in a console, 0 otherwise)"));

strUsage += HelpMessageOpt("-metricsrefreshtime", strprintf(_("Number of seconds between metrics refreshes (default: %u if running in a console, %u otherwise)"), 1, 600));

}

strUsage += HelpMessageOpt("-sporkkey=<privkey>", _("Enable spork administration functionality with the appropriate private key."));

return strUsage;

}

static void BlockNotifyCallback(const uint256& hashNewTip)

{

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

ReplaceAll(strCmd, "%s", hashNewTip.GetHex());

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

t.detach();

}

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 std::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 auto& [fileIndex, filePath] : mapBlockFiles) {

if (atoi(fileIndex) == nContigCounter) {

nContigCounter++;

continue;

}

remove(filePath);

}

}

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

{

const CChainParams& chainparams = Params();

RenameThread("flux-loadblk");

// -reindex

if (fReindex) {

CImportingNow imp;

int nFile = 0;

while (true) {

CDiskBlockPos pos(nFile, 0);

if (!std::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

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

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

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

if (file) {

CImportingNow imp;

std::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 std::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(chainparams, file);

} else {

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

}

}

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

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

StartShutdown();

}

}

void ThreadNotifyRecentlyAdded(CThreadInterrupt& interrupt)

{

while (!interrupt) {

// Run the notifier on an integer second in the steady clock.

auto now = std::chrono::steady_clock::now().time_since_epoch();

auto nextFire = std::chrono::duration_cast<std::chrono::seconds>(

now + std::chrono::seconds(1));

auto wait_time = nextFire - std::chrono::duration_cast<std::chrono::seconds>(now);

if (!interrupt.sleep_for(wait_time))

break;

mempool.NotifyRecentlyAdded();

}

}

/** Sanity checks

* Ensure that Bitcoin 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;

}

static void ZC_LoadParams(

const CChainParams& chainparams

)

{

std::filesystem::path sapling_spend = ZC_GetParamsDir() / "sapling-spend.params";

std::filesystem::path sapling_output = ZC_GetParamsDir() / "sapling-output.params";

std::filesystem::path sprout_groth16 = ZC_GetParamsDir() / "sprout-groth16.params";

if (!(

std::filesystem::exists(sapling_spend) &&

std::filesystem::exists(sapling_output) &&

std::filesystem::exists(sprout_groth16)

)) {

uiInterface.ThreadSafeMessageBox(strprintf(

_("Cannot find the Zelcash network parameters in the following directory:\n"

"%s\n"

"Please run 'flux-fetch-params' or './zcutil/fetch-params.sh' and then restart."),

ZC_GetParamsDir()),

"", CClientUIInterface::MSG_ERROR);

StartShutdown();

return;

}

pfluxParams = ZCJoinSplit::Prepared();

static_assert(

sizeof(std::filesystem::path::value_type) == sizeof(codeunit),

"librustzcash not configured correctly");

auto sapling_spend_str = sapling_spend.native();

auto sapling_output_str = sapling_output.native();

auto sprout_groth16_str = sprout_groth16.native();

LogPrintf("Loading Sapling (Spend) parameters from %s\n", sapling_spend.string().c_str());

LogPrintf("Loading Sapling (Output) parameters from %s\n", sapling_output.string().c_str());

LogPrintf("Loading Sapling (Sprout Groth16) parameters from %s\n", sprout_groth16.string().c_str());

auto start = std::chrono::steady_clock::now();

librustzcash_init_zksnark_params(

reinterpret_cast<const codeunit*>(sapling_spend_str.c_str()),

sapling_spend_str.length(),

"8270785a1a0d0bc77196f000ee6d221c9c9894f55307bd9357c3f0105d31ca63991ab91324160d8f53e2bbd3c2633a6eb8bdf5205d822e7f3f73edac51b2b70c",

reinterpret_cast<const codeunit*>(sapling_output_str.c_str()),

sapling_output_str.length(),

"657e3d38dbb5cb5e7dd2970e8b03d69b4787dd907285b5a7f0790dcc8072f60bf593b32cc2d1c030e00ff5ae64bf84c5c3beb84ddc841d48264b4a171744d028",

reinterpret_cast<const codeunit*>(sprout_groth16_str.c_str()),

sprout_groth16_str.length(),

"e9b238411bd6c0ec4791e9d04245ec350c9c5744f5610dfcce4365d5ca49dfefd5054e371842b3f88fa1b9d7e8e075249b3ebabd167fa8b0f3161292d36c180a"

);

auto end = std::chrono::steady_clock::now();

float elapsed = std::chrono::duration<float>(end - start).count();

LogPrintf("Loaded Sapling parameters in %fs seconds.\n", elapsed);

}

bool AppInitServers(std::vector<std::thread>& threadGroup)

{

RPCServer::OnStopped(&OnRPCStopped);

RPCServer::OnPreCommand(&OnRPCPreCommand);

if (!InitHTTPServer())

return false;

if (!StartRPC())

return false;

if (!StartHTTPRPC())

return false;

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

return false;

if (!StartHTTPServer())

return false;

return true;

}

/** Initialize bitcoin.

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

*/

bool AppInit2(std::vector<std::thread>& threadGroup, CScheduler& scheduler)

{

// Set global scheduler pointer for interrupt handling

g_scheduler = &scheduler;

// ********************************************************* 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);

#endif

if (!SetupNetworking())

return InitError("Error: Initializing networking failed");

#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);

// Ignore SIGPIPE, otherwise it will bring the daemon down if the client closes unexpectedly

signal(SIGPIPE, SIG_IGN);

#endif

std::set_new_handler(new_handler_terminate);

// ********************************************************* Step 2: parameter interactions

const CChainParams& chainparams = Params();

// Set this early so that experimental features are correctly enabled/disabled

fExperimentalMode = GetBoolArg("-experimentalfeatures", false);

// Fail early if user has set experimental options without the global flag

if (!fExperimentalMode) {

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

return InitError(_("Wallet encryption requires -experimentalfeatures."));

} else if (mapArgs.count("-developersetpoolsizezero")) {

return InitError(_("Setting the size of shielded pools to zero requires -experimentalfeatures."));

} else if (mapArgs.count("-paymentdisclosure")) {

return InitError(_("Payment disclosure requires -experimentalfeatures."));

} else if (mapArgs.count("-zmergetoaddress")) {

return InitError(_("RPC method z_mergetoaddress requires -experimentalfeatures."));

} else if (mapArgs.count("-insightexplorer")) {

return InitError(_("Insight explorer requires -experimentalfeatures."));

}

}

// Set this early so that parameter interactions go to console

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

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

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

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

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

// 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 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 try to retrieve public IP when not listening (pointless)

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__);

}

// Make sure enough file descriptors are available

int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);

nMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);

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;

// if using block pruning, then disable txindex

// also disable the wallet (for now, until SPV support is implemented in wallet)

if (GetArg("-prune", 0)) {

if (GetBoolArg("-txindex", false))

return InitError(_("Prune mode is incompatible with -txindex."));

#ifdef ENABLE_WALLET

if (!GetBoolArg("-disablewallet", false)) {

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

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

else

return InitError(_("Can't run with a wallet in prune mode."));

}

#endif

}

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