src/init.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2014 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #if defined(HAVE_CONFIG_H)
   7 #include "config/bitcoin-config.h"
   8 #endif
   9
  10 #include "init.h"
  11
  12 #include "addrman.h"
  13 #include "amount.h"
  14 #include "chain.h"
  15 #include "chainparams.h"
  16 #include "checkpoints.h"
  17 #include "compat/sanity.h"
  18 #include "consensus/validation.h"
  19 #include "httpserver.h"
  20 #include "httprpc.h"
  21 #include "key.h"
  22 #include "main.h"
  23 #include "miner.h"
  24 #include "net.h"
  25 #include "policy/policy.h"
  26 #include "rpcserver.h"
  27 #include "script/standard.h"
  28 #include "scheduler.h"
  29 #include "txdb.h"
  30 #include "txmempool.h"
  31 #include "ui_interface.h"
  32 #include "util.h"
  33 #include "utilmoneystr.h"
  34 #include "utilstrencodings.h"
  35 #include "validationinterface.h"
  36 #ifdef ENABLE_WALLET
  37 #include "wallet/db.h"
  38 #include "wallet/wallet.h"
  39 #include "wallet/walletdb.h"
  40 #endif
  41 #include <stdint.h>
  42 #include <stdio.h>
  43
  44 #ifndef WIN32
  45 #include <signal.h>
  46 #endif
  47
  48 #include <boost/algorithm/string/predicate.hpp>
  49 #include <boost/algorithm/string/replace.hpp>
  50 #include <boost/bind.hpp>
  51 #include <boost/filesystem.hpp>
  52 #include <boost/function.hpp>
  53 #include <boost/interprocess/sync/file_lock.hpp>
  54 #include <boost/thread.hpp>
  55 #include <openssl/crypto.h>
  56
  57 #if ENABLE_ZMQ
  58 #include "zmq/zmqnotificationinterface.h"
  59 #endif
  60
  61 using namespace std;
  62
  63 #ifdef ENABLE_WALLET
  64 CWallet* pwalletMain = NULL;
  65 #endif
  66 bool fFeeEstimatesInitialized = false;
  67
  68 #if ENABLE_ZMQ
  69 static CZMQNotificationInterface* pzmqNotificationInterface = NULL;
  70 #endif
  71
  72 #ifdef WIN32
  73 // Win32 LevelDB doesn't use filedescriptors, and the ones used for
  74 // accessing block files don't count towards the fd_set size limit
  75 // anyway.
  76 #define MIN_CORE_FILEDESCRIPTORS 0
  77 #else
  78 #define MIN_CORE_FILEDESCRIPTORS 150
  79 #endif
  80
  81 /** Used to pass flags to the Bind() function */
  82 enum BindFlags {
  83     BF_NONE         = 0,
  84     BF_EXPLICIT     = (1U << 0),
  85     BF_REPORT_ERROR = (1U << 1),
  86     BF_WHITELIST    = (1U << 2),
  87 };
  88
  89 static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
  90 CClientUIInterface uiInterface; // Declared but not defined in ui_interface.h
  91
  92 //////////////////////////////////////////////////////////////////////////////
  93 //
  94 // Shutdown
  95 //
  96
  97 //
  98 // Thread management and startup/shutdown:
  99 //
 100 // The network-processing threads are all part of a thread group
 101 // created by AppInit() or the Qt main() function.
 102 //
 103 // A clean exit happens when StartShutdown() or the SIGTERM
 104 // signal handler sets fRequestShutdown, which triggers
 105 // the DetectShutdownThread(), which interrupts the main thread group.
 106 // DetectShutdownThread() then exits, which causes AppInit() to
 107 // continue (it .joins the shutdown thread).
 108 // Shutdown() is then
 109 // called to clean up database connections, and stop other
 110 // threads that should only be stopped after the main network-processing
 111 // threads have exited.
 112 //
 113 // Note that if running -daemon the parent process returns from AppInit2
 114 // before adding any threads to the threadGroup, so .join_all() returns
 115 // immediately and the parent exits from main().
 116 //
 117 // Shutdown for Qt is very similar, only it uses a QTimer to detect
 118 // fRequestShutdown getting set, and then does the normal Qt
 119 // shutdown thing.
 120 //
 121
 122 volatile bool fRequestShutdown = false;
 123
 124 void StartShutdown()
 125 {
 126     fRequestShutdown = true;
 127 }
 128 bool ShutdownRequested()
 129 {
 130     return fRequestShutdown;
 131 }
 132
 133 class CCoinsViewErrorCatcher : public CCoinsViewBacked
 134 {
 135 public:
 136     CCoinsViewErrorCatcher(CCoinsView* view) : CCoinsViewBacked(view) {}
 137     bool GetCoins(const uint256 &txid, CCoins &coins) const {
 138         try {
 139             return CCoinsViewBacked::GetCoins(txid, coins);
 140         } catch(const std::runtime_error& e) {
 141             uiInterface.ThreadSafeMessageBox(_("Error reading from database, shutting down."), "", CClientUIInterface::MSG_ERROR);
 142             LogPrintf("Error reading from database: %s\n", e.what());
 143             // Starting the shutdown sequence and returning false to the caller would be
 144             // interpreted as 'entry not found' (as opposed to unable to read data), and
 145             // could lead to invalid interpretation. Just exit immediately, as we can't
 146             // continue anyway, and all writes should be atomic.
 147             abort();
 148         }
 149     }
 150     // Writes do not need similar protection, as failure to write is handled by the caller.
 151 };
 152
 153 static CCoinsViewDB *pcoinsdbview = NULL;
 154 static CCoinsViewErrorCatcher *pcoinscatcher = NULL;
 155
 156 void Interrupt(boost::thread_group& threadGroup)
 157 {
 158     InterruptHTTPServer();
 159     InterruptHTTPRPC();
 160     InterruptRPC();
 161     InterruptREST();
 162     threadGroup.interrupt_all();
 163 }
 164
 165 void Shutdown()
 166 {
 167     LogPrintf("%s: In progress...\n", __func__);
 168     static CCriticalSection cs_Shutdown;
 169     TRY_LOCK(cs_Shutdown, lockShutdown);
 170     if (!lockShutdown)
 171         return;
 172
 173     /// Note: Shutdown() must be able to handle cases in which AppInit2() failed part of the way,
 174     /// for example if the data directory was found to be locked.
 175     /// Be sure that anything that writes files or flushes caches only does this if the respective
 176     /// module was initialized.
 177     RenameThread("bitcoin-shutoff");
 178     mempool.AddTransactionsUpdated(1);
 179
 180     StopHTTPRPC();
 181     StopREST();
 182     StopRPC();
 183     StopHTTPServer();
 184 #ifdef ENABLE_WALLET
 185     if (pwalletMain)
 186         pwalletMain->Flush(false);
 187 #endif
 188     GenerateBitcoins(false, 0, Params());
 189     StopNode();
 190     UnregisterNodeSignals(GetNodeSignals());
 191
 192     if (fFeeEstimatesInitialized)
 193     {
 194         boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
 195         CAutoFile est_fileout(fopen(est_path.string().c_str(), "wb"), SER_DISK, CLIENT_VERSION);
 196         if (!est_fileout.IsNull())
 197             mempool.WriteFeeEstimates(est_fileout);
 198         else
 199             LogPrintf("%s: Failed to write fee estimates to %s\n", __func__, est_path.string());
 200         fFeeEstimatesInitialized = false;
 201     }
 202
 203     {
 204         LOCK(cs_main);
 205         if (pcoinsTip != NULL) {
 206             FlushStateToDisk();
 207         }
 208         delete pcoinsTip;
 209         pcoinsTip = NULL;
 210         delete pcoinscatcher;
 211         pcoinscatcher = NULL;
 212         delete pcoinsdbview;
 213         pcoinsdbview = NULL;
 214         delete pblocktree;
 215         pblocktree = NULL;
 216     }
 217 #ifdef ENABLE_WALLET
 218     if (pwalletMain)
 219         pwalletMain->Flush(true);
 220 #endif
 221
 222 #if ENABLE_ZMQ
 223     if (pzmqNotificationInterface) {
 224         UnregisterValidationInterface(pzmqNotificationInterface);
 225         pzmqNotificationInterface->Shutdown();
 226         delete pzmqNotificationInterface;
 227         pzmqNotificationInterface = NULL;
 228     }
 229 #endif
 230
 231 #ifndef WIN32
 232     try {
 233         boost::filesystem::remove(GetPidFile());
 234     } catch (const boost::filesystem::filesystem_error& e) {
 235         LogPrintf("%s: Unable to remove pidfile: %s\n", __func__, e.what());
 236     }
 237 #endif
 238     UnregisterAllValidationInterfaces();
 239 #ifdef ENABLE_WALLET
 240     delete pwalletMain;
 241     pwalletMain = NULL;
 242 #endif
 243     ECC_Stop();
 244     LogPrintf("%s: done\n", __func__);
 245 }
 246
 247 /**
 248  * Signal handlers are very limited in what they are allowed to do, so:
 249  */
 250 void HandleSIGTERM(int)
 251 {
 252     fRequestShutdown = true;
 253 }
 254
 255 void HandleSIGHUP(int)
 256 {
 257     fReopenDebugLog = true;
 258 }
 259
 260 bool static InitError(const std::string &str)
 261 {
 262     uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
 263     return false;
 264 }
 265
 266 bool static InitWarning(const std::string &str)
 267 {
 268     uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
 269     return true;
 270 }
 271
 272 bool static Bind(const CService &addr, unsigned int flags) {
 273     if (!(flags & BF_EXPLICIT) && IsLimited(addr))
 274         return false;
 275     std::string strError;
 276     if (!BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
 277         if (flags & BF_REPORT_ERROR)
 278             return InitError(strError);
 279         return false;
 280     }
 281     return true;
 282 }
 283
 284 void OnRPCStopped()
 285 {
 286     cvBlockChange.notify_all();
 287     LogPrint("rpc", "RPC stopped.\n");
 288 }
 289
 290 void OnRPCPreCommand(const CRPCCommand& cmd)
 291 {
 292     // Observe safe mode
 293     string strWarning = GetWarnings("rpc");
 294     if (strWarning != "" && !GetBoolArg("-disablesafemode", false) &&
 295         !cmd.okSafeMode)
 296         throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
 297 }
 298
 299 std::string HelpMessage(HelpMessageMode mode)
 300 {
 301     const bool showDebug = GetBoolArg("-help-debug", false);
 302
 303     // When adding new options to the categories, please keep and ensure alphabetical ordering.
 304     // Do not translate _(...) -help-debug options, Many technical terms, and only a very small audience, so is unnecessary stress to translators.
 305     string strUsage = HelpMessageGroup(_("Options:"));
 306     strUsage += HelpMessageOpt("-?", _("This help message"));
 307     strUsage += HelpMessageOpt("-alerts", strprintf(_("Receive and display P2P network alerts (default: %u)"), DEFAULT_ALERTS));
 308     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)"));
 309     strUsage += HelpMessageOpt("-blocknotify=<cmd>", _("Execute command when the best block changes (%s in cmd is replaced by block hash)"));
 310     strUsage += HelpMessageOpt("-checkblocks=<n>", strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), 288));
 311     strUsage += HelpMessageOpt("-checklevel=<n>", strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), 3));
 312     strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), "bitcoin.conf"));
 313     if (mode == HMM_BITCOIND)
 314     {
 315 #if !defined(WIN32)
 316         strUsage += HelpMessageOpt("-daemon", _("Run in the background as a daemon and accept commands"));
 317 #endif
 318     }
 319     strUsage += HelpMessageOpt("-datadir=<dir>", _("Specify data directory"));
 320     strUsage += HelpMessageOpt("-dbcache=<n>", strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache));
 321     strUsage += HelpMessageOpt("-loadblock=<file>", _("Imports blocks from external blk000??.dat file") + " " + _("on startup"));
 322     strUsage += HelpMessageOpt("-maxorphantx=<n>", strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS));
 323     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)"),
 324         -GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));
 325 #ifndef WIN32
 326     strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), "bitcoind.pid"));
 327 #endif
 328     strUsage += HelpMessageOpt("-prune=<n>", strprintf(_("Reduce storage requirements by pruning (deleting) old blocks. This mode is incompatible with -txindex and -rescan. "
 329             "Warning: Reverting this setting requires re-downloading the entire blockchain. "
 330             "(default: 0 = disable pruning blocks, >%u = target size in MiB to use for block files)"), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
 331     strUsage += HelpMessageOpt("-reindex", _("Rebuild block chain index from current blk000??.dat files on startup"));
 332 #if !defined(WIN32)
 333     strUsage += HelpMessageOpt("-sysperms", _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)"));
 334 #endif
 335     strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), 0));
 336
 337     strUsage += HelpMessageGroup(_("Connection options:"));
 338     strUsage += HelpMessageOpt("-addnode=<ip>", _("Add a node to connect to and attempt to keep the connection open"));
 339     strUsage += HelpMessageOpt("-banscore=<n>", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), 100));
 340     strUsage += HelpMessageOpt("-bantime=<n>", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), 86400));
 341     strUsage += HelpMessageOpt("-bind=<addr>", _("Bind to given address and always listen on it. Use [host]:port notation for IPv6"));
 342     strUsage += HelpMessageOpt("-connect=<ip>", _("Connect only to the specified node(s)"));
 343     strUsage += HelpMessageOpt("-discover", _("Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)"));
 344     strUsage += HelpMessageOpt("-dns", _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + _("(default: 1)"));
 345     strUsage += HelpMessageOpt("-dnsseed", _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)"));
 346     strUsage += HelpMessageOpt("-externalip=<ip>", _("Specify your own public address"));
 347     strUsage += HelpMessageOpt("-forcednsseed", strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), 0));
 348     strUsage += HelpMessageOpt("-listen", _("Accept connections from outside (default: 1 if no -proxy or -connect)"));
 349     strUsage += HelpMessageOpt("-maxconnections=<n>", strprintf(_("Maintain at most <n> connections to peers (default: %u)"), DEFAULT_MAX_PEER_CONNECTIONS));
 350     strUsage += HelpMessageOpt("-maxreceivebuffer=<n>", strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), 5000));
 351     strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), 1000));
 352     strUsage += HelpMessageOpt("-onion=<ip:port>", strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy"));
 353     strUsage += HelpMessageOpt("-onlynet=<net>", _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)"));
 354     strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), 1));
 355     strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 8333, 18333));
 356     strUsage += HelpMessageOpt("-proxy=<ip:port>", _("Connect through SOCKS5 proxy"));
 357     strUsage += HelpMessageOpt("-proxyrandomize", strprintf(_("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)"), 1));
 358     strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect"));
 359     strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT));
 360 #ifdef USE_UPNP
 361 #if USE_UPNP
 362     strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening and no -proxy)"));
 363 #else
 364     strUsage += HelpMessageOpt("-upnp", strprintf(_("Use UPnP to map the listening port (default: %u)"), 0));
 365 #endif
 366 #endif
 367     strUsage += HelpMessageOpt("-whitebind=<addr>", _("Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6"));
 368     strUsage += HelpMessageOpt("-whitelist=<netmask>", _("Whitelist peers connecting from the given netmask or IP address. Can be specified multiple times.") +
 369         " " + _("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"));
 370
 371 #ifdef ENABLE_WALLET
 372     strUsage += HelpMessageGroup(_("Wallet options:"));
 373     strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
 374     strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), 100));
 375     if (showDebug)
 376         strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)",
 377             CURRENCY_UNIT, FormatMoney(CWallet::minTxFee.GetFeePerK())));
 378     strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
 379         CURRENCY_UNIT, FormatMoney(payTxFee.GetFeePerK())));
 380     strUsage += HelpMessageOpt("-rescan", _("Rescan the block chain for missing wallet transactions") + " " + _("on startup"));
 381     strUsage += HelpMessageOpt("-salvagewallet", _("Attempt to recover private keys from a corrupt wallet.dat") + " " + _("on startup"));
 382     strUsage += HelpMessageOpt("-sendfreetransactions", strprintf(_("Send transactions as zero-fee transactions if possible (default: %u)"), 0));
 383     strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), 1));
 384     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));
 385     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)"),
 386         CURRENCY_UNIT, FormatMoney(maxTxFee)));
 387     strUsage += HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format") + " " + _("on startup"));
 388     strUsage += HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), "wallet.dat"));
 389     strUsage += HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), true));
 390     strUsage += HelpMessageOpt("-walletnotify=<cmd>", _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)"));
 391     strUsage += HelpMessageOpt("-zapwallettxes=<mode>", _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") +
 392         " " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)"));
 393 #endif
 394
 395 #if ENABLE_ZMQ
 396     strUsage += HelpMessageGroup(_("ZeroMQ notification options:"));
 397     strUsage += HelpMessageOpt("-zmqpubhashblock=<address>", _("Enable publish hash block in <address>"));
 398     strUsage += HelpMessageOpt("-zmqpubhashtransaction=<address>", _("Enable publish hash transaction in <address>"));
 399     strUsage += HelpMessageOpt("-zmqpubrawblock=<address>", _("Enable publish raw block in <address>"));
 400     strUsage += HelpMessageOpt("-zmqpubrawtransaction=<address>", _("Enable publish raw transaction in <address>"));
 401 #endif
 402
 403     strUsage += HelpMessageGroup(_("Debugging/Testing options:"));
 404     if (showDebug)
 405     {
 406         strUsage += HelpMessageOpt("-checkpoints", strprintf("Disable expensive verification for known chain history (default: %u)", 1));
 407         strUsage += HelpMessageOpt("-dblogsize=<n>", strprintf("Flush database activity from memory pool to disk log every <n> megabytes (default: %u)", 100));
 408         strUsage += HelpMessageOpt("-disablesafemode", strprintf("Disable safemode, override a real safe mode event (default: %u)", 0));
 409         strUsage += HelpMessageOpt("-testsafemode", strprintf("Force safe mode (default: %u)", 0));
 410         strUsage += HelpMessageOpt("-dropmessagestest=<n>", "Randomly drop 1 of every <n> network messages");
 411         strUsage += HelpMessageOpt("-fuzzmessagestest=<n>", "Randomly fuzz 1 of every <n> network messages");
 412         strUsage += HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", 1));
 413         strUsage += HelpMessageOpt("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", 0));
 414     }
 415     string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, mempoolrej, net, proxy, prune, http"; // Don't translate these and qt below
 416     if (mode == HMM_BITCOIN_QT)
 417         debugCategories += ", qt";
 418     strUsage += HelpMessageOpt("-debug=<category>", strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + ". " +
 419         _("If <category> is not supplied or if <category> = 1, output all debugging information.") + _("<category> can be:") + " " + debugCategories + ".");
 420     strUsage += HelpMessageOpt("-gen", strprintf(_("Generate coins (default: %u)"), 0));
 421     strUsage += HelpMessageOpt("-genproclimit=<n>", strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), 1));
 422     strUsage += HelpMessageOpt("-help-debug", _("Show all debugging options (usage: --help -help-debug)"));
 423     strUsage += HelpMessageOpt("-logips", strprintf(_("Include IP addresses in debug output (default: %u)"), 0));
 424     strUsage += HelpMessageOpt("-logtimestamps", strprintf(_("Prepend debug output with timestamp (default: %u)"), 1));
 425     if (showDebug)
 426     {
 427         strUsage += HelpMessageOpt("-limitfreerelay=<n>", strprintf("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default: %u)", 15));
 428         strUsage += HelpMessageOpt("-relaypriority", strprintf("Require high priority for relaying free or low-fee transactions (default: %u)", 1));
 429         strUsage += HelpMessageOpt("-maxsigcachesize=<n>", strprintf("Limit size of signature cache to <n> entries (default: %u)", 50000));
 430     }
 431     strUsage += HelpMessageOpt("-minrelaytxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for relaying (default: %s)"),
 432         CURRENCY_UNIT, FormatMoney(::minRelayTxFee.GetFeePerK())));
 433     strUsage += HelpMessageOpt("-printtoconsole", _("Send trace/debug info to console instead of debug.log file"));
 434     if (showDebug)
 435     {
 436         strUsage += HelpMessageOpt("-printpriority", strprintf("Log transaction priority and fee per kB when mining blocks (default: %u)", 0));
 437         strUsage += HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", 1));
 438         strUsage += HelpMessageOpt("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. "
 439             "This is intended for regression testing tools and app development.");
 440     }
 441     strUsage += HelpMessageOpt("-shrinkdebugfile", _("Shrink debug.log file on client startup (default: 1 when no -debug)"));
 442     strUsage += HelpMessageOpt("-testnet", _("Use the test network"));
 443
 444     strUsage += HelpMessageGroup(_("Node relay options:"));
 445     if (showDebug)
 446         strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !Params(CBaseChainParams::TESTNET).RequireStandard()));
 447     strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1));
 448     strUsage += HelpMessageOpt("-datacarriersize", strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY));
 449
 450     strUsage += HelpMessageGroup(_("Block creation options:"));
 451     strUsage += HelpMessageOpt("-blockminsize=<n>", strprintf(_("Set minimum block size in bytes (default: %u)"), 0));
 452     strUsage += HelpMessageOpt("-blockmaxsize=<n>", strprintf(_("Set maximum block size in bytes (default: %d)"), DEFAULT_BLOCK_MAX_SIZE));
 453     strUsage += HelpMessageOpt("-blockprioritysize=<n>", strprintf(_("Set maximum size of high-priority/low-fee transactions in bytes (default: %d)"), DEFAULT_BLOCK_PRIORITY_SIZE));
 454     if (showDebug)
 455         strUsage += HelpMessageOpt("-blockversion=<n>", strprintf("Override block version to test forking scenarios (default: %d)", (int)CBlock::CURRENT_VERSION));
 456
 457     strUsage += HelpMessageGroup(_("RPC server options:"));
 458     strUsage += HelpMessageOpt("-server", _("Accept command line and JSON-RPC commands"));
 459     strUsage += HelpMessageOpt("-rest", strprintf(_("Accept public REST requests (default: %u)"), 0));
 460     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)"));
 461     strUsage += HelpMessageOpt("-rpcuser=<user>", _("Username for JSON-RPC connections"));
 462     strUsage += HelpMessageOpt("-rpcpassword=<pw>", _("Password for JSON-RPC connections"));
 463     strUsage += HelpMessageOpt("-rpcport=<port>", strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), 8332, 18332));
 464     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"));
 465     strUsage += HelpMessageOpt("-rpcthreads=<n>", strprintf(_("Set the number of threads to service RPC calls (default: %d)"), DEFAULT_HTTP_THREADS));
 466     if (showDebug) {
 467         strUsage += HelpMessageOpt("-rpcworkqueue=<n>", strprintf("Set the depth of the work queue to service RPC calls (default: %d)", DEFAULT_HTTP_WORKQUEUE));
 468         strUsage += HelpMessageOpt("-rpctimeout=<n>", strprintf("Timeout during HTTP requests (default: %d)", DEFAULT_HTTP_TIMEOUT));
 469     }
 470
 471     if (mode == HMM_BITCOIN_QT)
 472     {
 473         strUsage += HelpMessageGroup(_("UI Options:"));
 474         if (showDebug) {
 475             strUsage += HelpMessageOpt("-allowselfsignedrootcertificates", "Allow self signed root certificates (default: 0)");
 476         }
 477         strUsage += HelpMessageOpt("-choosedatadir", _("Choose data directory on startup (default: 0)"));
 478         strUsage += HelpMessageOpt("-lang=<lang>", _("Set language, for example \"de_DE\" (default: system locale)"));
 479         strUsage += HelpMessageOpt("-min", _("Start minimized"));
 480         strUsage += HelpMessageOpt("-rootcertificates=<file>", _("Set SSL root certificates for payment request (default: -system-)"));
 481         strUsage += HelpMessageOpt("-splash", _("Show splash screen on startup (default: 1)"));
 482         if (showDebug) {
 483             strUsage += HelpMessageOpt("-uiplatform", "Select platform to customize UI for (one of windows, macosx, other; default: platform compiled on)");
 484         }
 485     }
 486
 487     return strUsage;
 488 }
 489
 490 std::string LicenseInfo()
 491 {
 492     return FormatParagraph(strprintf(_("Copyright (C) 2009-%i The Bitcoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
 493            "\n" +
 494            FormatParagraph(_("This is experimental software.")) + "\n" +
 495            "\n" +
 496            FormatParagraph(_("Distributed under the MIT software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.")) + "\n" +
 497            "\n" +
 498            FormatParagraph(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit <https://www.openssl.org/> and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard.")) +
 499            "\n";
 500 }
 501
 502 static void BlockNotifyCallback(const uint256& hashNewTip)
 503 {
 504     std::string strCmd = GetArg("-blocknotify", "");
 505
 506     boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
 507     boost::thread t(runCommand, strCmd); // thread runs free
 508 }
 509
 510 struct CImportingNow
 511 {
 512     CImportingNow() {
 513         assert(fImporting == false);
 514         fImporting = true;
 515     }
 516
 517     ~CImportingNow() {
 518         assert(fImporting == true);
 519         fImporting = false;
 520     }
 521 };
 522
 523
 524 // If we're using -prune with -reindex, then delete block files that will be ignored by the
 525 // reindex.  Since reindexing works by starting at block file 0 and looping until a blockfile
 526 // is missing, do the same here to delete any later block files after a gap.  Also delete all
 527 // rev files since they'll be rewritten by the reindex anyway.  This ensures that vinfoBlockFile
 528 // is in sync with what's actually on disk by the time we start downloading, so that pruning
 529 // works correctly.
 530 void CleanupBlockRevFiles()
 531 {
 532     using namespace boost::filesystem;
 533     map<string, path> mapBlockFiles;
 534
 535     // Glob all blk?????.dat and rev?????.dat files from the blocks directory.
 536     // Remove the rev files immediately and insert the blk file paths into an
 537     // ordered map keyed by block file index.
 538     LogPrintf("Removing unusable blk?????.dat and rev?????.dat files for -reindex with -prune\n");
 539     path blocksdir = GetDataDir() / "blocks";
 540     for (directory_iterator it(blocksdir); it != directory_iterator(); it++) {
 541         if (is_regular_file(*it) &&
 542             it->path().filename().string().length() == 12 &&
 543             it->path().filename().string().substr(8,4) == ".dat")
 544         {
 545             if (it->path().filename().string().substr(0,3) == "blk")
 546                 mapBlockFiles[it->path().filename().string().substr(3,5)] = it->path();
 547             else if (it->path().filename().string().substr(0,3) == "rev")
 548                 remove(it->path());
 549         }
 550     }
 551
 552     // Remove all block files that aren't part of a contiguous set starting at
 553     // zero by walking the ordered map (keys are block file indices) by
 554     // keeping a separate counter.  Once we hit a gap (or if 0 doesn't exist)
 555     // start removing block files.
 556     int nContigCounter = 0;
 557     BOOST_FOREACH(const PAIRTYPE(string, path)& item, mapBlockFiles) {
 558         if (atoi(item.first) == nContigCounter) {
 559             nContigCounter++;
 560             continue;
 561         }
 562         remove(item.second);
 563     }
 564 }
 565
 566 void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
 567 {
 568     RenameThread("bitcoin-loadblk");
 569     // -reindex
 570     if (fReindex) {
 571         CImportingNow imp;
 572         int nFile = 0;
 573         while (true) {
 574             CDiskBlockPos pos(nFile, 0);
 575             if (!boost::filesystem::exists(GetBlockPosFilename(pos, "blk")))
 576                 break; // No block files left to reindex
 577             FILE *file = OpenBlockFile(pos, true);
 578             if (!file)
 579                 break; // This error is logged in OpenBlockFile
 580             LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
 581             LoadExternalBlockFile(file, &pos);
 582             nFile++;
 583         }
 584         pblocktree->WriteReindexing(false);
 585         fReindex = false;
 586         LogPrintf("Reindexing finished\n");
 587         // To avoid ending up in a situation without genesis block, re-try initializing (no-op if reindexing worked):
 588         InitBlockIndex();
 589     }
 590
 591     // hardcoded $DATADIR/bootstrap.dat
 592     boost::filesystem::path pathBootstrap = GetDataDir() / "bootstrap.dat";
 593     if (boost::filesystem::exists(pathBootstrap)) {
 594         FILE *file = fopen(pathBootstrap.string().c_str(), "rb");
 595         if (file) {
 596             CImportingNow imp;
 597             boost::filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
 598             LogPrintf("Importing bootstrap.dat...\n");
 599             LoadExternalBlockFile(file);
 600             RenameOver(pathBootstrap, pathBootstrapOld);
 601         } else {
 602             LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());
 603         }
 604     }
 605
 606     // -loadblock=
 607     BOOST_FOREACH(const boost::filesystem::path& path, vImportFiles) {
 608         FILE *file = fopen(path.string().c_str(), "rb");
 609         if (file) {
 610             CImportingNow imp;
 611             LogPrintf("Importing blocks file %s...\n", path.string());
 612             LoadExternalBlockFile(file);
 613         } else {
 614             LogPrintf("Warning: Could not open blocks file %s\n", path.string());
 615         }
 616     }
 617
 618     if (GetBoolArg("-stopafterblockimport", false)) {
 619         LogPrintf("Stopping after block import\n");
 620         StartShutdown();
 621     }
 622 }
 623
 624 /** Sanity checks
 625  *  Ensure that Bitcoin is running in a usable environment with all
 626  *  necessary library support.
 627  */
 628 bool InitSanityCheck(void)
 629 {
 630     if(!ECC_InitSanityCheck()) {
 631         InitError("OpenSSL appears to lack support for elliptic curve cryptography. For more "
 632                   "information, visit https://en.bitcoin.it/wiki/OpenSSL_and_EC_Libraries");
 633         return false;
 634     }
 635     if (!glibc_sanity_test() || !glibcxx_sanity_test())
 636         return false;
 637
 638     return true;
 639 }
 640
 641 bool AppInitServers(boost::thread_group& threadGroup)
 642 {
 643     RPCServer::OnStopped(&OnRPCStopped);
 644     RPCServer::OnPreCommand(&OnRPCPreCommand);
 645     if (!InitHTTPServer())
 646         return false;
 647     if (!StartRPC())
 648         return false;
 649     if (!StartHTTPRPC())
 650         return false;
 651     if (GetBoolArg("-rest", false) && !StartREST())
 652         return false;
 653     if (!StartHTTPServer(threadGroup))
 654         return false;
 655     return true;
 656 }
 657
 658 /** Initialize bitcoin.
 659  *  @pre Parameters should be parsed and config file should be read.
 660  */
 661 bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 662 {
 663     // ********************************************************* Step 1: setup
 664 #ifdef _MSC_VER
 665     // Turn off Microsoft heap dump noise
 666     _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
 667     _CrtSetReportFile(_CRT_WARN, CreateFileA("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
 668 #endif
 669 #if _MSC_VER >= 1400
 670     // Disable confusing "helpful" text message on abort, Ctrl-C
 671     _set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
 672 #endif
 673 #ifdef WIN32
 674     // Enable Data Execution Prevention (DEP)
 675     // Minimum supported OS versions: WinXP SP3, WinVista >= SP1, Win Server 2008
 676     // A failure is non-critical and needs no further attention!
 677 #ifndef PROCESS_DEP_ENABLE
 678     // We define this here, because GCCs winbase.h limits this to _WIN32_WINNT >= 0x0601 (Windows 7),
 679     // which is not correct. Can be removed, when GCCs winbase.h is fixed!
 680 #define PROCESS_DEP_ENABLE 0x00000001
 681 #endif
 682     typedef BOOL (WINAPI *PSETPROCDEPPOL)(DWORD);
 683     PSETPROCDEPPOL setProcDEPPol = (PSETPROCDEPPOL)GetProcAddress(GetModuleHandleA("Kernel32.dll"), "SetProcessDEPPolicy");
 684     if (setProcDEPPol != NULL) setProcDEPPol(PROCESS_DEP_ENABLE);
 685 #endif
 686
 687     if (!SetupNetworking())
 688         return InitError("Error: Initializing networking failed");
 689
 690 #ifndef WIN32
 691     if (GetBoolArg("-sysperms", false)) {
 692 #ifdef ENABLE_WALLET
 693         if (!GetBoolArg("-disablewallet", false))
 694             return InitError("Error: -sysperms is not allowed in combination with enabled wallet functionality");
 695 #endif
 696     } else {
 697         umask(077);
 698     }
 699
 700     // Clean shutdown on SIGTERM
 701     struct sigaction sa;
 702     sa.sa_handler = HandleSIGTERM;
 703     sigemptyset(&sa.sa_mask);
 704     sa.sa_flags = 0;
 705     sigaction(SIGTERM, &sa, NULL);
 706     sigaction(SIGINT, &sa, NULL);
 707
 708     // Reopen debug.log on SIGHUP
 709     struct sigaction sa_hup;
 710     sa_hup.sa_handler = HandleSIGHUP;
 711     sigemptyset(&sa_hup.sa_mask);
 712     sa_hup.sa_flags = 0;
 713     sigaction(SIGHUP, &sa_hup, NULL);
 714
 715 #if defined (__SVR4) && defined (__sun)
 716     // ignore SIGPIPE on Solaris
 717     signal(SIGPIPE, SIG_IGN);
 718 #endif
 719 #endif
 720
 721     // ********************************************************* Step 2: parameter interactions
 722     const CChainParams& chainparams = Params();
 723
 724     // Set this early so that parameter interactions go to console
 725     fPrintToConsole = GetBoolArg("-printtoconsole", false);
 726     fLogTimestamps = GetBoolArg("-logtimestamps", true);
 727     fLogIPs = GetBoolArg("-logips", false);
 728
 729     LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
 730     LogPrintf("Bitcoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
 731
 732     // when specifying an explicit binding address, you want to listen on it
 733     // even when -connect or -proxy is specified
 734     if (mapArgs.count("-bind")) {
 735         if (SoftSetBoolArg("-listen", true))
 736             LogPrintf("%s: parameter interaction: -bind set -> setting -listen=1\n", __func__);
 737     }
 738     if (mapArgs.count("-whitebind")) {
 739         if (SoftSetBoolArg("-listen", true))
 740             LogPrintf("%s: parameter interaction: -whitebind set -> setting -listen=1\n", __func__);
 741     }
 742
 743     if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
 744         // when only connecting to trusted nodes, do not seed via DNS, or listen by default
 745         if (SoftSetBoolArg("-dnsseed", false))
 746             LogPrintf("%s: parameter interaction: -connect set -> setting -dnsseed=0\n", __func__);
 747         if (SoftSetBoolArg("-listen", false))
 748             LogPrintf("%s: parameter interaction: -connect set -> setting -listen=0\n", __func__);
 749     }
 750
 751     if (mapArgs.count("-proxy")) {
 752         // to protect privacy, do not listen by default if a default proxy server is specified
 753         if (SoftSetBoolArg("-listen", false))
 754             LogPrintf("%s: parameter interaction: -proxy set -> setting -listen=0\n", __func__);
 755         // to protect privacy, do not use UPNP when a proxy is set. The user may still specify -listen=1
 756         // to listen locally, so don't rely on this happening through -listen below.
 757         if (SoftSetBoolArg("-upnp", false))
 758             LogPrintf("%s: parameter interaction: -proxy set -> setting -upnp=0\n", __func__);
 759         // to protect privacy, do not discover addresses by default
 760         if (SoftSetBoolArg("-discover", false))
 761             LogPrintf("%s: parameter interaction: -proxy set -> setting -discover=0\n", __func__);
 762     }
 763
 764     if (!GetBoolArg("-listen", DEFAULT_LISTEN)) {
 765         // do not map ports or try to retrieve public IP when not listening (pointless)
 766         if (SoftSetBoolArg("-upnp", false))
 767             LogPrintf("%s: parameter interaction: -listen=0 -> setting -upnp=0\n", __func__);
 768         if (SoftSetBoolArg("-discover", false))
 769             LogPrintf("%s: parameter interaction: -listen=0 -> setting -discover=0\n", __func__);
 770     }
 771
 772     if (mapArgs.count("-externalip")) {
 773         // if an explicit public IP is specified, do not try to find others
 774         if (SoftSetBoolArg("-discover", false))
 775             LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);
 776     }
 777
 778     if (GetBoolArg("-salvagewallet", false)) {
 779         // Rewrite just private keys: rescan to find transactions
 780         if (SoftSetBoolArg("-rescan", true))
 781             LogPrintf("%s: parameter interaction: -salvagewallet=1 -> setting -rescan=1\n", __func__);
 782     }
 783
 784     // -zapwallettx implies a rescan
 785     if (GetBoolArg("-zapwallettxes", false)) {
 786         if (SoftSetBoolArg("-rescan", true))
 787             LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);
 788     }
 789
 790     // if using block pruning, then disable txindex
 791     if (GetArg("-prune", 0)) {
 792         if (GetBoolArg("-txindex", false))
 793             return InitError(_("Prune mode is incompatible with -txindex."));
 794 #ifdef ENABLE_WALLET
 795         if (GetBoolArg("-rescan", false)) {
 796             return InitError(_("Rescans are not possible in pruned mode. You will need to use -reindex which will download the whole blockchain again."));
 797         }
 798 #endif
 799     }
 800
 801     // Make sure enough file descriptors are available
 802     int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);
 803     int nUserMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
 804     nMaxConnections = std::max(nUserMaxConnections, 0);
 805
 806     // Trim requested connection counts, to fit into system limitations
 807     nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS)), 0);
 808     int nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS);
 809     if (nFD < MIN_CORE_FILEDESCRIPTORS)
 810         return InitError(_("Not enough file descriptors available."));
 811     nMaxConnections = std::min(nFD - MIN_CORE_FILEDESCRIPTORS, nMaxConnections);
 812
 813     if (nMaxConnections < nUserMaxConnections)
 814         InitWarning(strprintf(_("Reducing -maxconnections from %d to %d, because of system limitations."), nUserMaxConnections, nMaxConnections));
 815
 816     // ********************************************************* Step 3: parameter-to-internal-flags
 817
 818     fDebug = !mapMultiArgs["-debug"].empty();
 819     // Special-case: if -debug=0/-nodebug is set, turn off debugging messages
 820     const vector<string>& categories = mapMultiArgs["-debug"];
 821     if (GetBoolArg("-nodebug", false) || find(categories.begin(), categories.end(), string("0")) != categories.end())
 822         fDebug = false;
 823
 824     // Check for -debugnet
 825     if (GetBoolArg("-debugnet", false))
 826         InitWarning(_("Warning: Unsupported argument -debugnet ignored, use -debug=net."));
 827     // Check for -socks - as this is a privacy risk to continue, exit here
 828     if (mapArgs.count("-socks"))
 829         return InitError(_("Error: Unsupported argument -socks found. Setting SOCKS version isn't possible anymore, only SOCKS5 proxies are supported."));
 830     // Check for -tor - as this is a privacy risk to continue, exit here
 831     if (GetBoolArg("-tor", false))
 832         return InitError(_("Error: Unsupported argument -tor found, use -onion."));
 833
 834     if (GetBoolArg("-benchmark", false))
 835         InitWarning(_("Warning: Unsupported argument -benchmark ignored, use -debug=bench."));
 836
 837     // Checkmempool and checkblockindex default to true in regtest mode
 838     mempool.setSanityCheck(GetBoolArg("-checkmempool", chainparams.DefaultConsistencyChecks()));
 839     fCheckBlockIndex = GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
 840     fCheckpointsEnabled = GetBoolArg("-checkpoints", true);
 841
 842     // -par=0 means autodetect, but nScriptCheckThreads==0 means no concurrency
 843     nScriptCheckThreads = GetArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
 844     if (nScriptCheckThreads <= 0)
 845         nScriptCheckThreads += GetNumCores();
 846     if (nScriptCheckThreads <= 1)
 847         nScriptCheckThreads = 0;
 848     else if (nScriptCheckThreads > MAX_SCRIPTCHECK_THREADS)
 849         nScriptCheckThreads = MAX_SCRIPTCHECK_THREADS;
 850
 851     fServer = GetBoolArg("-server", false);
 852
 853     // block pruning; get the amount of disk space (in MB) to allot for block & undo files
 854     int64_t nSignedPruneTarget = GetArg("-prune", 0) * 1024 * 1024;
 855     if (nSignedPruneTarget < 0) {
 856         return InitError(_("Prune cannot be configured with a negative value."));
 857     }
 858     nPruneTarget = (uint64_t) nSignedPruneTarget;
 859     if (nPruneTarget) {
 860         if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) {
 861             return InitError(strprintf(_("Prune configured below the minimum of %d MB.  Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
 862         }
 863         LogPrintf("Prune configured to target %uMiB on disk for block and undo files.\n", nPruneTarget / 1024 / 1024);
 864         fPruneMode = true;
 865     }
 866
 867 #ifdef ENABLE_WALLET
 868     bool fDisableWallet = GetBoolArg("-disablewallet", false);
 869 #endif
 870
 871     nConnectTimeout = GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
 872     if (nConnectTimeout <= 0)
 873         nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
 874
 875     // Fee-per-kilobyte amount considered the same as "free"
 876     // If you are mining, be careful setting this:
 877     // if you set it to zero then
 878     // a transaction spammer can cheaply fill blocks using
 879     // 1-satoshi-fee transactions. It should be set above the real
 880     // cost to you of processing a transaction.
 881     if (mapArgs.count("-minrelaytxfee"))
 882     {
 883         CAmount n = 0;
 884         if (ParseMoney(mapArgs["-minrelaytxfee"], n) && n > 0)
 885             ::minRelayTxFee = CFeeRate(n);
 886         else
 887             return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"]));
 888     }
 889
 890     fRequireStandard = !GetBoolArg("-acceptnonstdtxn", !Params().RequireStandard());
 891     if (Params().RequireStandard() && !fRequireStandard)
 892         return InitError(strprintf("acceptnonstdtxn is not currently supported for %s chain", chainparams.NetworkIDString()));
 893
 894 #ifdef ENABLE_WALLET
 895     if (mapArgs.count("-mintxfee"))
 896     {
 897         CAmount n = 0;
 898         if (ParseMoney(mapArgs["-mintxfee"], n) && n > 0)
 899             CWallet::minTxFee = CFeeRate(n);
 900         else
 901             return InitError(strprintf(_("Invalid amount for -mintxfee=<amount>: '%s'"), mapArgs["-mintxfee"]));
 902     }
 903     if (mapArgs.count("-paytxfee"))
 904     {
 905         CAmount nFeePerK = 0;
 906         if (!ParseMoney(mapArgs["-paytxfee"], nFeePerK))
 907             return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s'"), mapArgs["-paytxfee"]));
 908         if (nFeePerK > nHighTransactionFeeWarning)
 909             InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
 910         payTxFee = CFeeRate(nFeePerK, 1000);
 911         if (payTxFee < ::minRelayTxFee)
 912         {
 913             return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
 914                                        mapArgs["-paytxfee"], ::minRelayTxFee.ToString()));
 915         }
 916     }
 917     if (mapArgs.count("-maxtxfee"))
 918     {
 919         CAmount nMaxFee = 0;
 920         if (!ParseMoney(mapArgs["-maxtxfee"], nMaxFee))
 921             return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s'"), mapArgs["-maptxfee"]));
 922         if (nMaxFee > nHighTransactionMaxFeeWarning)
 923             InitWarning(_("Warning: -maxtxfee is set very high! Fees this large could be paid on a single transaction."));
 924         maxTxFee = nMaxFee;
 925         if (CFeeRate(maxTxFee, 1000) < ::minRelayTxFee)
 926         {
 927             return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
 928                                        mapArgs["-maxtxfee"], ::minRelayTxFee.ToString()));
 929         }
 930     }
 931     nTxConfirmTarget = GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
 932     bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", true);
 933     fSendFreeTransactions = GetBoolArg("-sendfreetransactions", false);
 934
 935     std::string strWalletFile = GetArg("-wallet", "wallet.dat");
 936 #endif // ENABLE_WALLET
 937
 938     fIsBareMultisigStd = GetBoolArg("-permitbaremultisig", true);
 939     nMaxDatacarrierBytes = GetArg("-datacarriersize", nMaxDatacarrierBytes);
 940
 941     fAlerts = GetBoolArg("-alerts", DEFAULT_ALERTS);
 942
 943     // Option to startup with mocktime set (used for regression testing):
 944     SetMockTime(GetArg("-mocktime", 0)); // SetMockTime(0) is a no-op
 945
 946     if (GetBoolArg("-peerbloomfilters", true))
 947         nLocalServices |= NODE_BLOOM;
 948
 949     // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
 950
 951     // Initialize elliptic curve code
 952     ECC_Start();
 953
 954     // Sanity check
 955     if (!InitSanityCheck())
 956         return InitError(_("Initialization sanity check failed. Bitcoin Core is shutting down."));
 957
 958     std::string strDataDir = GetDataDir().string();
 959 #ifdef ENABLE_WALLET
 960     // Wallet file must be a plain filename without a directory
 961     if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
 962         return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
 963 #endif
 964     // Make sure only a single Bitcoin process is using the data directory.
 965     boost::filesystem::path pathLockFile = GetDataDir() / ".lock";
 966     FILE* file = fopen(pathLockFile.string().c_str(), "a"); // empty lock file; created if it doesn't exist.
 967     if (file) fclose(file);
 968
 969     try {
 970         static boost::interprocess::file_lock lock(pathLockFile.string().c_str());
 971         if (!lock.try_lock())
 972             return InitError(strprintf(_("Cannot obtain a lock on data directory %s. Bitcoin Core is probably already running."), strDataDir));
 973     } catch(const boost::interprocess::interprocess_exception& e) {
 974         return InitError(strprintf(_("Cannot obtain a lock on data directory %s. Bitcoin Core is probably already running.") + " %s.", strDataDir, e.what()));
 975     }
 976
 977 #ifndef WIN32
 978     CreatePidFile(GetPidFile(), getpid());
 979 #endif
 980     if (GetBoolArg("-shrinkdebugfile", !fDebug))
 981         ShrinkDebugFile();
 982
 983     if (fPrintToDebugLog)
 984         OpenDebugLog();
 985
 986     LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
 987 #ifdef ENABLE_WALLET
 988     LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
 989 #endif
 990     if (!fLogTimestamps)
 991         LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
 992     LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
 993     LogPrintf("Using data directory %s\n", strDataDir);
 994     LogPrintf("Using config file %s\n", GetConfigFile().string());
 995     LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
 996     std::ostringstream strErrors;
 997
 998     LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
 999     if (nScriptCheckThreads) {
1000         for (int i=0; i<nScriptCheckThreads-1; i++)
1001             threadGroup.create_thread(&ThreadScriptCheck);
1002     }
1003
1004     // Start the lightweight task scheduler thread
1005     CScheduler::Function serviceLoop = boost::bind(&CScheduler::serviceQueue, &scheduler);
1006     threadGroup.create_thread(boost::bind(&TraceThread<CScheduler::Function>, "scheduler", serviceLoop));
1007
1008     /* Start the RPC server already.  It will be started in "warmup" mode
1009      * and not really process calls already (but it will signify connections
1010      * that the server is there and will be ready later).  Warmup mode will
1011      * be disabled when initialisation is finished.
1012      */
1013     if (fServer)
1014     {
1015         uiInterface.InitMessage.connect(SetRPCWarmupStatus);
1016         if (!AppInitServers(threadGroup))
1017             return InitError(_("Unable to start HTTP server. See debug log for details."));
1018     }
1019
1020     int64_t nStart;
1021
1022     // ********************************************************* Step 5: verify wallet database integrity
1023 #ifdef ENABLE_WALLET
1024     if (!fDisableWallet) {
1025         LogPrintf("Using wallet %s\n", strWalletFile);
1026         uiInterface.InitMessage(_("Verifying wallet..."));
1027
1028         std::string warningString;
1029         std::string errorString;
1030
1031         if (!CWallet::Verify(strWalletFile, warningString, errorString))
1032             return false;
1033
1034         if (!warningString.empty())
1035             InitWarning(warningString);
1036         if (!errorString.empty())
1037             return InitError(warningString);
1038
1039     } // (!fDisableWallet)
1040 #endif // ENABLE_WALLET
1041     // ********************************************************* Step 6: network initialization
1042
1043     RegisterNodeSignals(GetNodeSignals());
1044
1045     // format user agent, check total size
1046     strSubVersion = FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, mapMultiArgs.count("-uacomment") ? mapMultiArgs["-uacomment"] : std::vector<string>());
1047     if (strSubVersion.size() > MAX_SUBVERSION_LENGTH) {
1048         return InitError(strprintf("Total length of network version string %i exceeds maximum of %i characters. Reduce the number and/or size of uacomments.",
1049             strSubVersion.size(), MAX_SUBVERSION_LENGTH));
1050     }
1051
1052     if (mapArgs.count("-onlynet")) {
1053         std::set<enum Network> nets;
1054         BOOST_FOREACH(const std::string& snet, mapMultiArgs["-onlynet"]) {
1055             enum Network net = ParseNetwork(snet);
1056             if (net == NET_UNROUTABLE)
1057                 return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet));
1058             nets.insert(net);
1059         }
1060         for (int n = 0; n < NET_MAX; n++) {
1061             enum Network net = (enum Network)n;
1062             if (!nets.count(net))
1063                 SetLimited(net);
1064         }
1065     }
1066
1067     if (mapArgs.count("-whitelist")) {
1068         BOOST_FOREACH(const std::string& net, mapMultiArgs["-whitelist"]) {
1069             CSubNet subnet(net);
1070             if (!subnet.IsValid())
1071                 return InitError(strprintf(_("Invalid netmask specified in -whitelist: '%s'"), net));
1072             CNode::AddWhitelistedRange(subnet);
1073         }
1074     }
1075
1076     bool proxyRandomize = GetBoolArg("-proxyrandomize", true);
1077     // -proxy sets a proxy for all outgoing network traffic
1078     // -noproxy (or -proxy=0) as well as the empty string can be used to not set a proxy, this is the default
1079     std::string proxyArg = GetArg("-proxy", "");
1080     if (proxyArg != "" && proxyArg != "0") {
1081         proxyType addrProxy = proxyType(CService(proxyArg, 9050), proxyRandomize);
1082         if (!addrProxy.IsValid())
1083             return InitError(strprintf(_("Invalid -proxy address: '%s'"), proxyArg));
1084
1085         SetProxy(NET_IPV4, addrProxy);
1086         SetProxy(NET_IPV6, addrProxy);
1087         SetProxy(NET_TOR, addrProxy);
1088         SetNameProxy(addrProxy);
1089         SetReachable(NET_TOR); // by default, -proxy sets onion as reachable, unless -noonion later
1090     }
1091
1092     // -onion can be used to set only a proxy for .onion, or override normal proxy for .onion addresses
1093     // -noonion (or -onion=0) disables connecting to .onion entirely
1094     // An empty string is used to not override the onion proxy (in which case it defaults to -proxy set above, or none)
1095     std::string onionArg = GetArg("-onion", "");
1096     if (onionArg != "") {
1097         if (onionArg == "0") { // Handle -noonion/-onion=0
1098             SetReachable(NET_TOR, false); // set onions as unreachable
1099         } else {
1100             proxyType addrOnion = proxyType(CService(onionArg, 9050), proxyRandomize);
1101             if (!addrOnion.IsValid())
1102                 return InitError(strprintf(_("Invalid -onion address: '%s'"), onionArg));
1103             SetProxy(NET_TOR, addrOnion);
1104             SetReachable(NET_TOR);
1105         }
1106     }
1107
1108     // see Step 2: parameter interactions for more information about these
1109     fListen = GetBoolArg("-listen", DEFAULT_LISTEN);
1110     fDiscover = GetBoolArg("-discover", true);
1111     fNameLookup = GetBoolArg("-dns", true);
1112
1113     bool fBound = false;
1114     if (fListen) {
1115         if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
1116             BOOST_FOREACH(const std::string& strBind, mapMultiArgs["-bind"]) {
1117                 CService addrBind;
1118                 if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
1119                     return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind));
1120                 fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
1121             }
1122             BOOST_FOREACH(const std::string& strBind, mapMultiArgs["-whitebind"]) {
1123                 CService addrBind;
1124                 if (!Lookup(strBind.c_str(), addrBind, 0, false))
1125                     return InitError(strprintf(_("Cannot resolve -whitebind address: '%s'"), strBind));
1126                 if (addrBind.GetPort() == 0)
1127                     return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
1128                 fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
1129             }
1130         }
1131         else {
1132             struct in_addr inaddr_any;
1133             inaddr_any.s_addr = INADDR_ANY;
1134             fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
1135             fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
1136         }
1137         if (!fBound)
1138             return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
1139     }
1140
1141     if (mapArgs.count("-externalip")) {
1142         BOOST_FOREACH(const std::string& strAddr, mapMultiArgs["-externalip"]) {
1143             CService addrLocal(strAddr, GetListenPort(), fNameLookup);
1144             if (!addrLocal.IsValid())
1145                 return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr));
1146             AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
1147         }
1148     }
1149
1150     BOOST_FOREACH(const std::string& strDest, mapMultiArgs["-seednode"])
1151         AddOneShot(strDest);
1152
1153 #if ENABLE_ZMQ
1154     pzmqNotificationInterface = CZMQNotificationInterface::CreateWithArguments(mapArgs);
1155
1156     if (pzmqNotificationInterface) {
1157         pzmqNotificationInterface->Initialize();
1158         RegisterValidationInterface(pzmqNotificationInterface);
1159     }
1160 #endif
1161
1162     // ********************************************************* Step 7: load block chain
1163
1164     fReindex = GetBoolArg("-reindex", false);
1165
1166     // Upgrading to 0.8; hard-link the old blknnnn.dat files into /blocks/
1167     boost::filesystem::path blocksDir = GetDataDir() / "blocks";
1168     if (!boost::filesystem::exists(blocksDir))
1169     {
1170         boost::filesystem::create_directories(blocksDir);
1171         bool linked = false;
1172         for (unsigned int i = 1; i < 10000; i++) {
1173             boost::filesystem::path source = GetDataDir() / strprintf("blk%04u.dat", i);
1174             if (!boost::filesystem::exists(source)) break;
1175             boost::filesystem::path dest = blocksDir / strprintf("blk%05u.dat", i-1);
1176             try {
1177                 boost::filesystem::create_hard_link(source, dest);
1178                 LogPrintf("Hardlinked %s -> %s\n", source.string(), dest.string());
1179                 linked = true;
1180             } catch (const boost::filesystem::filesystem_error& e) {
1181                 // Note: hardlink creation failing is not a disaster, it just means
1182                 // blocks will get re-downloaded from peers.
1183                 LogPrintf("Error hardlinking blk%04u.dat: %s\n", i, e.what());
1184                 break;
1185             }
1186         }
1187         if (linked)
1188         {
1189             fReindex = true;
1190         }
1191     }
1192
1193     // cache size calculations
1194     int64_t nTotalCache = (GetArg("-dbcache", nDefaultDbCache) << 20);
1195     nTotalCache = std::max(nTotalCache, nMinDbCache << 20); // total cache cannot be less than nMinDbCache
1196     nTotalCache = std::min(nTotalCache, nMaxDbCache << 20); // total cache cannot be greated than nMaxDbcache
1197     int64_t nBlockTreeDBCache = nTotalCache / 8;
1198     if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", false))
1199         nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
1200     nTotalCache -= nBlockTreeDBCache;
1201     int64_t nCoinDBCache = std::min(nTotalCache / 2, (nTotalCache / 4) + (1 << 23)); // use 25%-50% of the remainder for disk cache
1202     nTotalCache -= nCoinDBCache;
1203     nCoinCacheUsage = nTotalCache; // the rest goes to in-memory cache
1204     LogPrintf("Cache configuration:\n");
1205     LogPrintf("* Using %.1fMiB for block index database\n", nBlockTreeDBCache * (1.0 / 1024 / 1024));
1206     LogPrintf("* Using %.1fMiB for chain state database\n", nCoinDBCache * (1.0 / 1024 / 1024));
1207     LogPrintf("* Using %.1fMiB for in-memory UTXO set\n", nCoinCacheUsage * (1.0 / 1024 / 1024));
1208
1209     bool fLoaded = false;
1210     while (!fLoaded) {
1211         bool fReset = fReindex;
1212         std::string strLoadError;
1213
1214         uiInterface.InitMessage(_("Loading block index..."));
1215
1216         nStart = GetTimeMillis();
1217         do {
1218             try {
1219                 UnloadBlockIndex();
1220                 delete pcoinsTip;
1221                 delete pcoinsdbview;
1222                 delete pcoinscatcher;
1223                 delete pblocktree;
1224
1225                 pblocktree = new CBlockTreeDB(nBlockTreeDBCache, false, fReindex);
1226                 pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex);
1227                 pcoinscatcher = new CCoinsViewErrorCatcher(pcoinsdbview);
1228                 pcoinsTip = new CCoinsViewCache(pcoinscatcher);
1229
1230                 if (fReindex) {
1231                     pblocktree->WriteReindexing(true);
1232                     //If we're reindexing in prune mode, wipe away unusable block files and all undo data files
1233                     if (fPruneMode)
1234                         CleanupBlockRevFiles();
1235                 }
1236
1237                 if (!LoadBlockIndex()) {
1238                     strLoadError = _("Error loading block database");
1239                     break;
1240                 }
1241
1242                 // If the loaded chain has a wrong genesis, bail out immediately
1243                 // (we're likely using a testnet datadir, or the other way around).
1244                 if (!mapBlockIndex.empty() && mapBlockIndex.count(chainparams.GetConsensus().hashGenesisBlock) == 0)
1245                     return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));
1246
1247                 // Initialize the block index (no-op if non-empty database was already loaded)
1248                 if (!InitBlockIndex()) {
1249                     strLoadError = _("Error initializing block database");
1250                     break;
1251                 }
1252
1253                 // Check for changed -txindex state
1254                 if (fTxIndex != GetBoolArg("-txindex", false)) {
1255                     strLoadError = _("You need to rebuild the database using -reindex to change -txindex");
1256                     break;
1257                 }
1258
1259                 // Check for changed -prune state.  What we are concerned about is a user who has pruned blocks
1260                 // in the past, but is now trying to run unpruned.
1261                 if (fHavePruned && !fPruneMode) {
1262                     strLoadError = _("You need to rebuild the database using -reindex to go back to unpruned mode.  This will redownload the entire blockchain");
1263                     break;
1264                 }
1265
1266                 uiInterface.InitMessage(_("Verifying blocks..."));
1267                 if (fHavePruned && GetArg("-checkblocks", 288) > MIN_BLOCKS_TO_KEEP) {
1268                     LogPrintf("Prune: pruned datadir may not have more than %d blocks; -checkblocks=%d may fail\n",
1269                         MIN_BLOCKS_TO_KEEP, GetArg("-checkblocks", 288));
1270                 }
1271
1272                 {
1273                     LOCK(cs_main);
1274                     CBlockIndex* tip = chainActive.Tip();
1275                     if (tip && tip->nTime > GetAdjustedTime() + 2 * 60 * 60) {
1276                         strLoadError = _("The block database contains a block which appears to be from the future. "
1277                                 "This may be due to your computer's date and time being set incorrectly. "
1278                                 "Only rebuild the block database if you are sure that your computer's date and time are correct");
1279                         break;
1280                     }
1281                 }
1282
1283                 if (!CVerifyDB().VerifyDB(pcoinsdbview, GetArg("-checklevel", 3),
1284                               GetArg("-checkblocks", 288))) {
1285                     strLoadError = _("Corrupted block database detected");
1286                     break;
1287                 }
1288             } catch (const std::exception& e) {
1289                 if (fDebug) LogPrintf("%s\n", e.what());
1290                 strLoadError = _("Error opening block database");
1291                 break;
1292             }
1293
1294             fLoaded = true;
1295         } while(false);
1296
1297         if (!fLoaded) {
1298             // first suggest a reindex
1299             if (!fReset) {
1300                 bool fRet = uiInterface.ThreadSafeMessageBox(
1301                     strLoadError + ".\n\n" + _("Do you want to rebuild the block database now?"),
1302                     "", CClientUIInterface::MSG_ERROR | CClientUIInterface::BTN_ABORT);
1303                 if (fRet) {
1304                     fReindex = true;
1305                     fRequestShutdown = false;
1306                 } else {
1307                     LogPrintf("Aborted block database rebuild. Exiting.\n");
1308                     return false;
1309                 }
1310             } else {
1311                 return InitError(strLoadError);
1312             }
1313         }
1314     }
1315
1316     // As LoadBlockIndex can take several minutes, it's possible the user
1317     // requested to kill the GUI during the last operation. If so, exit.
1318     // As the program has not fully started yet, Shutdown() is possibly overkill.
1319     if (fRequestShutdown)
1320     {
1321         LogPrintf("Shutdown requested. Exiting.\n");
1322         return false;
1323     }
1324     LogPrintf(" block index %15dms\n", GetTimeMillis() - nStart);
1325
1326     boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
1327     CAutoFile est_filein(fopen(est_path.string().c_str(), "rb"), SER_DISK, CLIENT_VERSION);
1328     // Allowed to fail as this file IS missing on first startup.
1329     if (!est_filein.IsNull())
1330         mempool.ReadFeeEstimates(est_filein);
1331     fFeeEstimatesInitialized = true;
1332
1333     // ********************************************************* Step 8: load wallet
1334 #ifdef ENABLE_WALLET
1335     if (fDisableWallet) {
1336         pwalletMain = NULL;
1337         LogPrintf("Wallet disabled!\n");
1338     } else {
1339
1340         // needed to restore wallet transaction meta data after -zapwallettxes
1341         std::vector<CWalletTx> vWtx;
1342
1343         if (GetBoolArg("-zapwallettxes", false)) {
1344             uiInterface.InitMessage(_("Zapping all transactions from wallet..."));
1345
1346             pwalletMain = new CWallet(strWalletFile);
1347             DBErrors nZapWalletRet = pwalletMain->ZapWalletTx(vWtx);
1348             if (nZapWalletRet != DB_LOAD_OK) {
1349                 uiInterface.InitMessage(_("Error loading wallet.dat: Wallet corrupted"));
1350                 return false;
1351             }
1352
1353             delete pwalletMain;
1354             pwalletMain = NULL;
1355         }
1356
1357         uiInterface.InitMessage(_("Loading wallet..."));
1358
1359         nStart = GetTimeMillis();
1360         bool fFirstRun = true;
1361         pwalletMain = new CWallet(strWalletFile);
1362         DBErrors nLoadWalletRet = pwalletMain->LoadWallet(fFirstRun);
1363         if (nLoadWalletRet != DB_LOAD_OK)
1364         {
1365             if (nLoadWalletRet == DB_CORRUPT)
1366                 strErrors << _("Error loading wallet.dat: Wallet corrupted") << "\n";
1367             else if (nLoadWalletRet == DB_NONCRITICAL_ERROR)
1368             {
1369                 string msg(_("Warning: error reading wallet.dat! All keys read correctly, but transaction data"
1370                              " or address book entries might be missing or incorrect."));
1371                 InitWarning(msg);
1372             }
1373             else if (nLoadWalletRet == DB_TOO_NEW)
1374                 strErrors << _("Error loading wallet.dat: Wallet requires newer version of Bitcoin Core") << "\n";
1375             else if (nLoadWalletRet == DB_NEED_REWRITE)
1376             {
1377                 strErrors << _("Wallet needed to be rewritten: restart Bitcoin Core to complete") << "\n";
1378                 LogPrintf("%s", strErrors.str());
1379                 return InitError(strErrors.str());
1380             }
1381             else
1382                 strErrors << _("Error loading wallet.dat") << "\n";
1383         }
1384
1385         if (GetBoolArg("-upgradewallet", fFirstRun))
1386         {
1387             int nMaxVersion = GetArg("-upgradewallet", 0);
1388             if (nMaxVersion == 0) // the -upgradewallet without argument case
1389             {
1390                 LogPrintf("Performing wallet upgrade to %i\n", FEATURE_LATEST);
1391                 nMaxVersion = CLIENT_VERSION;
1392                 pwalletMain->SetMinVersion(FEATURE_LATEST); // permanently upgrade the wallet immediately
1393             }
1394             else
1395                 LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
1396             if (nMaxVersion < pwalletMain->GetVersion())
1397                 strErrors << _("Cannot downgrade wallet") << "\n";
1398             pwalletMain->SetMaxVersion(nMaxVersion);
1399         }
1400
1401         if (fFirstRun)
1402         {
1403             // Create new keyUser and set as default key
1404             RandAddSeedPerfmon();
1405
1406             CPubKey newDefaultKey;
1407             if (pwalletMain->GetKeyFromPool(newDefaultKey)) {
1408                 pwalletMain->SetDefaultKey(newDefaultKey);
1409                 if (!pwalletMain->SetAddressBook(pwalletMain->vchDefaultKey.GetID(), "", "receive"))
1410                     strErrors << _("Cannot write default address") << "\n";
1411             }
1412
1413             pwalletMain->SetBestChain(chainActive.GetLocator());
1414         }
1415
1416         LogPrintf("%s", strErrors.str());
1417         LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
1418
1419         RegisterValidationInterface(pwalletMain);
1420
1421         CBlockIndex *pindexRescan = chainActive.Tip();
1422         if (GetBoolArg("-rescan", false))
1423             pindexRescan = chainActive.Genesis();
1424         else
1425         {
1426             CWalletDB walletdb(strWalletFile);
1427             CBlockLocator locator;
1428             if (walletdb.ReadBestBlock(locator))
1429                 pindexRescan = FindForkInGlobalIndex(chainActive, locator);
1430             else
1431                 pindexRescan = chainActive.Genesis();
1432         }
1433         if (chainActive.Tip() && chainActive.Tip() != pindexRescan)
1434         {
1435             //We can't rescan beyond non-pruned blocks, stop and throw an error
1436             //this might happen if a user uses a old wallet within a pruned node
1437             // or if he ran -disablewallet for a longer time, then decided to re-enable
1438             if (fPruneMode)
1439             {
1440                 CBlockIndex *block = chainActive.Tip();
1441                 while (block && block->pprev && (block->pprev->nStatus & BLOCK_HAVE_DATA) && block->pprev->nTx > 0 && pindexRescan != block)
1442                     block = block->pprev;
1443
1444                 if (pindexRescan != block)
1445                     return InitError(_("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)"));
1446             }
1447
1448             uiInterface.InitMessage(_("Rescanning..."));
1449             LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive.Height() - pindexRescan->nHeight, pindexRescan->nHeight);
1450             nStart = GetTimeMillis();
1451             pwalletMain->ScanForWalletTransactions(pindexRescan, true);
1452             LogPrintf(" rescan      %15dms\n", GetTimeMillis() - nStart);
1453             pwalletMain->SetBestChain(chainActive.GetLocator());
1454             nWalletDBUpdated++;
1455
1456             // Restore wallet transaction metadata after -zapwallettxes=1
1457             if (GetBoolArg("-zapwallettxes", false) && GetArg("-zapwallettxes", "1") != "2")
1458             {
1459                 CWalletDB walletdb(strWalletFile);
1460
1461                 BOOST_FOREACH(const CWalletTx& wtxOld, vWtx)
1462                 {
1463                     uint256 hash = wtxOld.GetHash();
1464                     std::map<uint256, CWalletTx>::iterator mi = pwalletMain->mapWallet.find(hash);
1465                     if (mi != pwalletMain->mapWallet.end())
1466                     {
1467                         const CWalletTx* copyFrom = &wtxOld;
1468                         CWalletTx* copyTo = &mi->second;
1469                         copyTo->mapValue = copyFrom->mapValue;
1470                         copyTo->vOrderForm = copyFrom->vOrderForm;
1471                         copyTo->nTimeReceived = copyFrom->nTimeReceived;
1472                         copyTo->nTimeSmart = copyFrom->nTimeSmart;
1473                         copyTo->fFromMe = copyFrom->fFromMe;
1474                         copyTo->strFromAccount = copyFrom->strFromAccount;
1475                         copyTo->nOrderPos = copyFrom->nOrderPos;
1476                         copyTo->WriteToDisk(&walletdb);
1477                     }
1478                 }
1479             }
1480         }
1481         pwalletMain->SetBroadcastTransactions(GetBoolArg("-walletbroadcast", true));
1482     } // (!fDisableWallet)
1483 #else // ENABLE_WALLET
1484     LogPrintf("No wallet support compiled in!\n");
1485 #endif // !ENABLE_WALLET
1486
1487     // ********************************************************* Step 9: data directory maintenance
1488
1489     // if pruning, unset the service bit and perform the initial blockstore prune
1490     // after any wallet rescanning has taken place.
1491     if (fPruneMode) {
1492         uiInterface.InitMessage(_("Pruning blockstore..."));
1493         LogPrintf("Unsetting NODE_NETWORK on prune mode\n");
1494         nLocalServices &= ~NODE_NETWORK;
1495         if (!fReindex) {
1496             PruneAndFlush();
1497         }
1498     }
1499
1500     // ********************************************************* Step 10: import blocks
1501
1502     if (mapArgs.count("-blocknotify"))
1503         uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);
1504
1505     uiInterface.InitMessage(_("Activating best chain..."));
1506     // scan for better chains in the block chain database, that are not yet connected in the active best chain
1507     CValidationState state;
1508     if (!ActivateBestChain(state))
1509         strErrors << "Failed to connect best block";
1510
1511     std::vector<boost::filesystem::path> vImportFiles;
1512     if (mapArgs.count("-loadblock"))
1513     {
1514         BOOST_FOREACH(const std::string& strFile, mapMultiArgs["-loadblock"])
1515             vImportFiles.push_back(strFile);
1516     }
1517     threadGroup.create_thread(boost::bind(&ThreadImport, vImportFiles));
1518     if (chainActive.Tip() == NULL) {
1519         LogPrintf("Waiting for genesis block to be imported...\n");
1520         while (!fRequestShutdown && chainActive.Tip() == NULL)
1521             MilliSleep(10);
1522     }
1523
1524     // ********************************************************* Step 11: start node
1525
1526     if (!CheckDiskSpace())
1527         return false;
1528
1529     if (!strErrors.str().empty())
1530         return InitError(strErrors.str());
1531
1532     RandAddSeedPerfmon();
1533
1534     //// debug print
1535     LogPrintf("mapBlockIndex.size() = %u\n",   mapBlockIndex.size());
1536     LogPrintf("nBestHeight = %d\n",                   chainActive.Height());
1537 #ifdef ENABLE_WALLET
1538     LogPrintf("setKeyPool.size() = %u\n",      pwalletMain ? pwalletMain->setKeyPool.size() : 0);
1539     LogPrintf("mapWallet.size() = %u\n",       pwalletMain ? pwalletMain->mapWallet.size() : 0);
1540     LogPrintf("mapAddressBook.size() = %u\n",  pwalletMain ? pwalletMain->mapAddressBook.size() : 0);
1541 #endif
1542
1543     StartNode(threadGroup, scheduler);
1544
1545     // Monitor the chain, and alert if we get blocks much quicker or slower than expected
1546     int64_t nPowTargetSpacing = Params().GetConsensus().nPowTargetSpacing;
1547     CScheduler::Function f = boost::bind(&PartitionCheck, &IsInitialBlockDownload,
1548                                          boost::ref(cs_main), boost::cref(pindexBestHeader), nPowTargetSpacing);
1549     scheduler.scheduleEvery(f, nPowTargetSpacing);
1550
1551     // Generate coins in the background
1552     GenerateBitcoins(GetBoolArg("-gen", false), GetArg("-genproclimit", 1), Params());
1553
1554     // ********************************************************* Step 11: finished
1555
1556     SetRPCWarmupFinished();
1557     uiInterface.InitMessage(_("Done loading"));
1558
1559 #ifdef ENABLE_WALLET
1560     if (pwalletMain) {
1561         // Add wallet transactions that aren't already in a block to mapTransactions
1562         pwalletMain->ReacceptWalletTransactions();
1563
1564         // Run a thread to flush wallet periodically
1565         threadGroup.create_thread(boost::bind(&ThreadFlushWalletDB, boost::ref(pwalletMain->strWalletFile)));
1566     }
1567 #endif
1568
1569     return !fRequestShutdown;
1570 }