text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2012 The Bitcoin developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  #include "txdb.h"
  #include "walletdb.h"
  #include "bitcoinrpc.h"
  #include "net.h"
  #include "init.h"
  #include "util.h"
  #include "ui_interface.h"
  #include "checkpoints.h"
  #include "zerocoin/ZeroTest.h"
  #include <boost/filesystem.hpp>
  #include <boost/filesystem/fstream.hpp>
  #include <boost/filesystem/convenience.hpp>
  #include <boost/interprocess/sync/file_lock.hpp>
  #include <boost/algorithm/string/predicate.hpp>
  #include <openssl/crypto.h>
  
  #ifndef WIN32
  #include <signal.h>
  #endif
  
  
  using namespace std;
  using namespace boost;
  
  CWallet* pwalletMain;
  CClientUIInterface uiInterface;
  bool fConfChange;
  bool fEnforceCanonical;
  unsigned int nNodeLifespan;
  unsigned int nDerivationMethodIndex;
  unsigned int nMinerSleep;
  bool fUseFastIndex;
  enum Checkpoints::CPMode CheckpointsMode;
  
  //////////////////////////////////////////////////////////////////////////////
  //
  // Shutdown
  //
  
  void ExitTimeout(void* parg)
  {
  #ifdef WIN32
      MilliSleep(5000);
      ExitProcess(0);
  #endif
  }
  
  void StartShutdown()
  {
  #ifdef QT_GUI
      // ensure we leave the Qt main loop for a clean GUI exit (Shutdown() is called in bitcoin.cpp afterwards)
      uiInterface.QueueShutdown();
  #else
      // Without UI, Shutdown() can simply be started in a new thread
      NewThread(Shutdown, NULL);
  #endif
  }
  
  void Shutdown(void* parg)
  {
      static CCriticalSection cs_Shutdown;
      static bool fTaken;
  
      // Make this thread recognisable as the shutdown thread
      RenameThread("WayaWolfCoin-shutoff");
  
      bool fFirstThread = false;
      {
          TRY_LOCK(cs_Shutdown, lockShutdown);
          if (lockShutdown)
          {
              fFirstThread = !fTaken;
              fTaken = true;
          }
      }
      static bool fExit;
      if (fFirstThread)
      {
          fShutdown = true;
          nTransactionsUpdated++;
  //        CTxDB().Close();
          bitdb.Flush(false);
          StopNode();
          bitdb.Flush(true);
          boost::filesystem::remove(GetPidFile());
          UnregisterWallet(pwalletMain);
          delete pwalletMain;
          NewThread(ExitTimeout, NULL);
          MilliSleep(50);
          printf("WayaWolfCoin exited\n\n");
          fExit = true;
  #ifndef QT_GUI
          // ensure non-UI client gets exited here, but let Bitcoin-Qt reach 'return 0;' in bitcoin.cpp
          exit(0);
  #endif
      }
      else
      {
          while (!fExit)
              MilliSleep(500);
          MilliSleep(100);
          ExitThread(0);
      }
  }
  
  void HandleSIGTERM(int)
  {
      fRequestShutdown = true;
  }
  
  void HandleSIGHUP(int)
  {
      fReopenDebugLog = true;
  }
  
  
  
  
  
  //////////////////////////////////////////////////////////////////////////////
  //
  // Start
  //
  #if !defined(QT_GUI)
  bool AppInit(int argc, char* argv[])
  {
      bool fRet = false;
      try
      {
          //
          // Parameters
          //
          // If Qt is used, parameters/bitcoin.conf are parsed in qt/bitcoin.cpp's main()
          ParseParameters(argc, argv);
          if (!boost::filesystem::is_directory(GetDataDir(false)))
          {
              fprintf(stderr, "Error: Specified directory does not exist\n");
              Shutdown(NULL);
          }
          ReadConfigFile(mapArgs, mapMultiArgs);
  
          if (mapArgs.count("-?") || mapArgs.count("--help"))
          {
              // First part of help message is specific to bitcoind / RPC client
              std::string strUsage = _("WayaWolfCoin version") + " " + FormatFullVersion() + "\n\n" +
                  _("Usage:") + "\n" +
                    "  WayaWolfCoind [options]                     " + "\n" +
                    "  WayaWolfCoind [options] <command> [params]  " + _("Send command to -server or WayaWolfCoind") + "\n" +
                    "  WayaWolfCoind [options] help                " + _("List commands") + "\n" +
                    "  WayaWolfCoind [options] help <command>      " + _("Get help for a command") + "\n";
  
              strUsage += "\n" + HelpMessage();
  
              fprintf(stdout, "%s", strUsage.c_str());
              return false;
          }
  
          // Command-line RPC
          for (int i = 1; i < argc; i++)
              if (!IsSwitchChar(argv[i][0]) && !boost::algorithm::istarts_with(argv[i], "WayaWolfCoin:"))
                  fCommandLine = true;
  
          if (fCommandLine)
          {
              int ret = CommandLineRPC(argc, argv);
              exit(ret);
          }
  
          fRet = AppInit2();
      }
      catch (std::exception& e) {
          PrintException(&e, "AppInit()");
      } catch (...) {
          PrintException(NULL, "AppInit()");
      }
      if (!fRet)
          Shutdown(NULL);
      return fRet;
  }
  
  extern void noui_connect();
  int main(int argc, char* argv[])
  {
      bool fRet = false;
  
      // Connect bitcoind signal handlers
      noui_connect();
  
      fRet = AppInit(argc, argv);
  
      if (fRet && fDaemon)
          return 0;
  
      return 1;
  }
  #endif
  
  bool static InitError(const std::string &str)
  {
      uiInterface.ThreadSafeMessageBox(str, _("WayaWolfCoin"), CClientUIInterface::OK | CClientUIInterface::MODAL);
      return false;
  }
  
  bool static InitWarning(const std::string &str)
  {
      uiInterface.ThreadSafeMessageBox(str, _("WayaWolfCoin"), CClientUIInterface::OK | CClientUIInterface::ICON_EXCLAMATION | CClientUIInterface::MODAL);
      return true;
  }
  
  
  bool static Bind(const CService &addr, bool fError = true) {
      if (IsLimited(addr))
          return false;
      std::string strError;
      if (!BindListenPort(addr, strError)) {
          if (fError)
              return InitError(strError);
          return false;
      }
      return true;
  }
  
  // Core-specific options shared between UI and daemon
  std::string HelpMessage()
  {
      string strUsage = _("Options:") + "\n" +
          "  -?                     " + _("This help message") + "\n" +
          "  -conf=<file>           " + _("Specify configuration file (default: WayaWolfCoin.conf)") + "\n" +
          "  -pid=<file>            " + _("Specify pid file (default: WayaWolfCoin.pid)") + "\n" +
          "  -datadir=<dir>         " + _("Specify data directory") + "\n" +
          "  -wallet=<dir>          " + _("Specify wallet file (within data directory)") + "\n" +
          "  -dbcache=<n>           " + _("Set database cache size in megabytes (default: 25)") + "\n" +
          "  -dblogsize=<n>         " + _("Set database disk log size in megabytes (default: 100)") + "\n" +
          "  -timeout=<n>           " + _("Specify connection timeout in milliseconds (default: 5000)") + "\n" +
          "  -proxy=<ip:port>       " + _("Connect through socks proxy") + "\n" +
          "  -socks=<n>             " + _("Select the version of socks proxy to use (4-5, default: 5)") + "\n" +
          "  -tor=<ip:port>         " + _("Use proxy to reach tor hidden services (default: same as -proxy)") + "\n"
          "  -dns                   " + _("Allow DNS lookups for -addnode, -seednode and -connect") + "\n" +
          "  -port=<port>           " + _("Listen for connections on <port> (default: 9911 or testnet: 19911)") + "\n" +
          "  -maxconnections=<n>    " + _("Maintain at most <n> connections to peers (default: 125)") + "\n" +
          "  -addnode=<ip>          " + _("Add a node to connect to and attempt to keep the connection open") + "\n" +
          "  -connect=<ip>          " + _("Connect only to the specified node(s)") + "\n" +
          "  -seednode=<ip>         " + _("Connect to a node to retrieve peer addresses, and disconnect") + "\n" +
          "  -externalip=<ip>       " + _("Specify your own public address") + "\n" +
          "  -onlynet=<net>         " + _("Only connect to nodes in network <net> (IPv4, IPv6 or Tor)") + "\n" +
          "  -discover              " + _("Discover own IP address (default: 1 when listening and no -externalip)") + "\n" +
          "  -irc                   " + _("Find peers using internet relay chat (default: 0)") + "\n" +
          "  -listen                " + _("Accept connections from outside (default: 1 if no -proxy or -connect)") + "\n" +
          "  -bind=<addr>           " + _("Bind to given address. Use [host]:port notation for IPv6") + "\n" +
          "  -dnsseed               " + _("Find peers using DNS lookup (default: 1)") + "\n" +
          "  -staking               " + _("Stake your coins to support network and gain reward (default: 1)") + "\n" +
          "  -synctime              " + _("Sync time with other nodes. Disable if time on your system is precise e.g. syncing with NTP (default: 1)") + "\n" +
          "  -cppolicy              " + _("Sync checkpoints policy (default: strict)") + "\n" +
          "  -banscore=<n>          " + _("Threshold for disconnecting misbehaving peers (default: 100)") + "\n" +
          "  -bantime=<n>           " + _("Number of seconds to keep misbehaving peers from reconnecting (default: 86400)") + "\n" +
          "  -maxreceivebuffer=<n>  " + _("Maximum per-connection receive buffer, <n>*1000 bytes (default: 5000)") + "\n" +
          "  -maxsendbuffer=<n>     " + _("Maximum per-connection send buffer, <n>*1000 bytes (default: 1000)") + "\n" +
  #ifdef USE_UPNP
  #if USE_UPNP
          "  -upnp                  " + _("Use UPnP to map the listening port (default: 1 when listening)") + "\n" +
  #else
          "  -upnp                  " + _("Use UPnP to map the listening port (default: 0)") + "\n" +
  #endif
  #endif
          "  -paytxfee=<amt>        " + _("Fee per KB to add to transactions you send") + "\n" +
          "  -mininput=<amt>        " + _("When creating transactions, ignore inputs with value less than this (default: 0.01)") + "\n" +
  #ifdef QT_GUI
          "  -server                " + _("Accept command line and JSON-RPC commands") + "\n" +
  #endif
  #if !defined(WIN32) && !defined(QT_GUI)
          "  -daemon                " + _("Run in the background as a daemon and accept commands") + "\n" +
  #endif
          "  -testnet               " + _("Use the test network") + "\n" +
          "  -debug                 " + _("Output extra debugging information. Implies all other -debug* options") + "\n" +
          "  -debugnet              " + _("Output extra network debugging information") + "\n" +
          "  -logtimestamps         " + _("Prepend debug output with timestamp") + "\n" +
          "  -shrinkdebugfile       " + _("Shrink debug.log file on client startup (default: 1 when no -debug)") + "\n" +
          "  -printtoconsole        " + _("Send trace/debug info to console instead of debug.log file") + "\n" +
  #ifdef WIN32
          "  -printtodebugger       " + _("Send trace/debug info to debugger") + "\n" +
  #endif
          "  -rpcuser=<user>        " + _("Username for JSON-RPC connections") + "\n" +
          "  -rpcpassword=<pw>      " + _("Password for JSON-RPC connections") + "\n" +
          "  -rpcport=<port>        " + _("Listen for JSON-RPC connections on <port> (default: 9912 or testnet: 19912)") + "\n" +
          "  -rpcallowip=<ip>       " + _("Allow JSON-RPC connections from specified IP address") + "\n" +
          "  -rpcconnect=<ip>       " + _("Send commands to node running on <ip> (default: 127.0.0.1)") + "\n" +
          "  -blocknotify=<cmd>     " + _("Execute command when the best block changes (%s in cmd is replaced by block hash)") + "\n" +
          "  -walletnotify=<cmd>    " + _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)") + "\n" +
          "  -confchange            " + _("Require a confirmations for change (default: 0)") + "\n" +
          "  -enforcecanonical      " + _("Enforce transaction scripts to use canonical PUSH operators (default: 1)") + "\n" +
          "  -alertnotify=<cmd>     " + _("Execute command when a relevant alert is received (%s in cmd is replaced by message)") + "\n" +
          "  -upgradewallet         " + _("Upgrade wallet to latest format") + "\n" +
          "  -keypool=<n>           " + _("Set key pool size to <n> (default: 100)") + "\n" +
          "  -rescan                " + _("Rescan the block chain for missing wallet transactions") + "\n" +
          "  -salvagewallet         " + _("Attempt to recover private keys from a corrupt wallet.dat") + "\n" +
          "  -checkblocks=<n>       " + _("How many blocks to check at startup (default: 2500, 0 = all)") + "\n" +
          "  -checklevel=<n>        " + _("How thorough the block verification is (0-6, default: 1)") + "\n" +
          "  -loadblock=<file>      " + _("Imports blocks from external blk000?.dat file") + "\n" +
  
          "\n" + _("Block creation options:") + "\n" +
          "  -blockminsize=<n>      "   + _("Set minimum block size in bytes (default: 0)") + "\n" +
          "  -blockmaxsize=<n>      "   + _("Set maximum block size in bytes (default: 250000)") + "\n" +
          "  -blockprioritysize=<n> "   + _("Set maximum size of high-priority/low-fee transactions in bytes (default: 27000)") + "\n" +
  
          "\n" + _("SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n" +
          "  -rpcssl                                  " + _("Use OpenSSL (https) for JSON-RPC connections") + "\n" +
          "  -rpcsslcertificatechainfile=<file.cert>  " + _("Server certificate file (default: server.cert)") + "\n" +
          "  -rpcsslprivatekeyfile=<file.pem>         " + _("Server private key (default: server.pem)") + "\n" +
          "  -rpcsslciphers=<ciphers>                 " + _("Acceptable ciphers (default: TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH)") + "\n";
  
      return strUsage;
  }
  
  /** Sanity checks
   *  Ensure that Bitcoin is running in a usable environment with all
   *  necessary library support.
   */
  bool InitSanityCheck(void)
  {
      if(!ECC_InitSanityCheck()) {
          InitError("OpenSSL appears to lack support for elliptic curve cryptography. For more "
                    "information, visit https://en.bitcoin.it/wiki/OpenSSL_and_EC_Libraries");
          return false;
      }
  
      // TODO: remaining sanity checks, see #4081
  
      return true;
  }
  
  /** Initialize bitcoin.
   *  @pre Parameters should be parsed and config file should be read.
   */
  bool AppInit2()
  {
      // ********************************************************* 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
  #ifndef WIN32
      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);
  #endif
  
      // ********************************************************* Step 2: parameter interactions
  
      nNodeLifespan = GetArg("-addrlifespan", 7);
      fUseFastIndex = GetBoolArg("-fastindex", true);
      nMinerSleep = GetArg("-minersleep", 500);
  
      CheckpointsMode = Checkpoints::STRICT;
      std::string strCpMode = GetArg("-cppolicy", "strict");
  
      if(strCpMode == "strict")
          CheckpointsMode = Checkpoints::STRICT;
  
      if(strCpMode == "advisory")
          CheckpointsMode = Checkpoints::ADVISORY;
  
      if(strCpMode == "permissive")
          CheckpointsMode = Checkpoints::PERMISSIVE;
  
      nDerivationMethodIndex = 0;
  
      fTestNet = GetBoolArg("-testnet");
      if (fTestNet) {
          SoftSetBoolArg("-irc", true);
      }
  
      if (mapArgs.count("-bind")) {
          // when specifying an explicit binding address, you want to listen on it
          // even when -connect or -proxy is specified
          SoftSetBoolArg("-listen", true);
      }
  
      if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
          // when only connecting to trusted nodes, do not seed via DNS, or listen by default
          SoftSetBoolArg("-dnsseed", false);
          SoftSetBoolArg("-listen", false);
      }
  
      if (mapArgs.count("-proxy")) {
          // to protect privacy, do not listen by default if a proxy server is specified
          SoftSetBoolArg("-listen", false);
      }
  
      if (!GetBoolArg("-listen", true)) {
          // do not map ports or try to retrieve public IP when not listening (pointless)
          SoftSetBoolArg("-upnp", false);
          SoftSetBoolArg("-discover", false);
      }
  
      if (mapArgs.count("-externalip")) {
          // if an explicit public IP is specified, do not try to find others
          SoftSetBoolArg("-discover", false);
      }
  
      if (GetBoolArg("-salvagewallet")) {
          // Rewrite just private keys: rescan to find transactions
          SoftSetBoolArg("-rescan", true);
      }
  
      // ********************************************************* Step 3: parameter-to-internal-flags
  
      fDebug = GetBoolArg("-debug");
  
      // -debug implies fDebug*
      if (fDebug)
          fDebugNet = true;
      else
          fDebugNet = GetBoolArg("-debugnet");
  
  #if !defined(WIN32) && !defined(QT_GUI)
      fDaemon = GetBoolArg("-daemon");
  #else
      fDaemon = false;
  #endif
  
      if (fDaemon)
          fServer = true;
      else
          fServer = GetBoolArg("-server");
  
      /* force fServer when running without GUI */
  #if !defined(QT_GUI)
      fServer = true;
  #endif
      fPrintToConsole = GetBoolArg("-printtoconsole");
      fPrintToDebugger = GetBoolArg("-printtodebugger");
      fLogTimestamps = GetBoolArg("-logtimestamps");
  
      if (mapArgs.count("-timeout"))
      {
          int nNewTimeout = GetArg("-timeout", 5000);
          if (nNewTimeout > 0 && nNewTimeout < 600000)
              nConnectTimeout = nNewTimeout;
      }
  
      if (mapArgs.count("-paytxfee"))
      {
          if (!ParseMoney(mapArgs["-paytxfee"], nTransactionFee))
              return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s'"), mapArgs["-paytxfee"].c_str()));
          if (nTransactionFee > 0.25 * COIN)
              InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
      }
  
      fConfChange = GetBoolArg("-confchange", false);
      fEnforceCanonical = GetBoolArg("-enforcecanonical", true);
  
      if (mapArgs.count("-mininput"))
      {
          if (!ParseMoney(mapArgs["-mininput"], nMinimumInputValue))
              return InitError(strprintf(_("Invalid amount for -mininput=<amount>: '%s'"), mapArgs["-mininput"].c_str()));
      }
  
      // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
      // Sanity check
      if (!InitSanityCheck())
          return InitError(_("Initialization sanity check failed. WayaWolfCoin is shutting down."));
  
      std::string strDataDir = GetDataDir().string();
      std::string strWalletFileName = GetArg("-wallet", "wallet.dat");
  
      // strWalletFileName must be a plain filename without a directory
      if (strWalletFileName != boost::filesystem::basename(strWalletFileName) + boost::filesystem::extension(strWalletFileName))
          return InitError(strprintf(_("Wallet %s resides outside data directory %s."), strWalletFileName.c_str(), strDataDir.c_str()));
  
      // Make sure only a single Bitcoin process is using the data directory.
      boost::filesystem::path pathLockFile = GetDataDir() / ".lock";
      FILE* file = fopen(pathLockFile.string().c_str(), "a"); // empty lock file; created if it doesn't exist.
      if (file) fclose(file);
      static boost::interprocess::file_lock lock(pathLockFile.string().c_str());
      if (!lock.try_lock())
          return InitError(strprintf(_("Cannot obtain a lock on data directory %s.  WayaWolfCoin is probably already running."), strDataDir.c_str()));
  
  #if !defined(WIN32) && !defined(QT_GUI)
      if (fDaemon)
      {
          // Daemonize
          pid_t pid = fork();
          if (pid < 0)
          {
              fprintf(stderr, "Error: fork() returned %d errno %d\n", pid, errno);
              return false;
          }
          if (pid > 0)
          {
              CreatePidFile(GetPidFile(), pid);
              return true;
          }
  
          pid_t sid = setsid();
          if (sid < 0)
              fprintf(stderr, "Error: setsid() returned %d errno %d\n", sid, errno);
      }
  #endif
  
      if (GetBoolArg("-shrinkdebugfile", !fDebug))
          ShrinkDebugFile();
      printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
      printf("WayaWolfCoin version %s (%s)\n", FormatFullVersion().c_str(), CLIENT_DATE.c_str());
      printf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
      if (!fLogTimestamps)
          printf("Startup time: %s\n", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
      printf("Default data directory %s\n", GetDefaultDataDir().string().c_str());
      printf("Used data directory %s\n", strDataDir.c_str());
      std::ostringstream strErrors;
  
      if (fDaemon)
          fprintf(stdout, "WayaWolfCoin server starting\n");
  
      int64_t nStart;
  
      // ********************************************************* Step 5: verify database integrity
  
      uiInterface.InitMessage(_("Verifying database integrity..."));
  
      if (!bitdb.Open(GetDataDir()))
      {
          string msg = strprintf(_("Error initializing database environment %s!"
                                   " To recover, BACKUP THAT DIRECTORY, then remove"
                                   " everything from it except for wallet.dat."), strDataDir.c_str());
          return InitError(msg);
      }
  
      if (GetBoolArg("-salvagewallet"))
      {
          // Recover readable keypairs:
          if (!CWalletDB::Recover(bitdb, strWalletFileName, true))
              return false;
      }
  
      if (filesystem::exists(GetDataDir() / strWalletFileName))
      {
          CDBEnv::VerifyResult r = bitdb.Verify(strWalletFileName, CWalletDB::Recover);
          if (r == CDBEnv::RECOVER_OK)
          {
              string msg = strprintf(_("Warning: wallet.dat corrupt, data salvaged!"
                                       " Original wallet.dat saved as wallet.{timestamp}.bak in %s; if"
                                       " your balance or transactions are incorrect you should"
                                       " restore from a backup."), strDataDir.c_str());
              uiInterface.ThreadSafeMessageBox(msg, _("WayaWolfCoin"), CClientUIInterface::OK | CClientUIInterface::ICON_EXCLAMATION | CClientUIInterface::MODAL);
          }
          if (r == CDBEnv::RECOVER_FAIL)
              return InitError(_("wallet.dat corrupt, salvage failed"));
      }
  
      // ********************************************************* Step 6: network initialization
  
      int nSocksVersion = GetArg("-socks", 5);
  
      if (nSocksVersion != 4 && nSocksVersion != 5)
          return InitError(strprintf(_("Unknown -socks proxy version requested: %i"), nSocksVersion));
  
      if (mapArgs.count("-onlynet")) {
          std::set<enum Network> nets;
          BOOST_FOREACH(std::string snet, mapMultiArgs["-onlynet"]) {
              enum Network net = ParseNetwork(snet);
              if (net == NET_UNROUTABLE)
                  return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet.c_str()));
              nets.insert(net);
          }
          for (int n = 0; n < NET_MAX; n++) {
              enum Network net = (enum Network)n;
              if (!nets.count(net))
                  SetLimited(net);
          }
      }
  
      CService addrProxy;
      bool fProxy = false;
      if (mapArgs.count("-proxy")) {
          addrProxy = CService(mapArgs["-proxy"], 9050);
          if (!addrProxy.IsValid())
              return InitError(strprintf(_("Invalid -proxy address: '%s'"), mapArgs["-proxy"].c_str()));
  
          if (!IsLimited(NET_IPV4))
              SetProxy(NET_IPV4, addrProxy, nSocksVersion);
          if (nSocksVersion > 4) {
              if (!IsLimited(NET_IPV6))
                  SetProxy(NET_IPV6, addrProxy, nSocksVersion);
              SetNameProxy(addrProxy, nSocksVersion);
          }
          fProxy = true;
      }
  
      // -tor can override normal proxy, -notor disables tor entirely
      if (!(mapArgs.count("-tor") && mapArgs["-tor"] == "0") && (fProxy || mapArgs.count("-tor"))) {
          CService addrOnion;
          if (!mapArgs.count("-tor"))
              addrOnion = addrProxy;
          else
              addrOnion = CService(mapArgs["-tor"], 9050);
          if (!addrOnion.IsValid())
              return InitError(strprintf(_("Invalid -tor address: '%s'"), mapArgs["-tor"].c_str()));
          SetProxy(NET_TOR, addrOnion, 5);
          SetReachable(NET_TOR);
      }
  
      // see Step 2: parameter interactions for more information about these
      fNoListen = !GetBoolArg("-listen", true);
      fDiscover = GetBoolArg("-discover", true);
      fNameLookup = GetBoolArg("-dns", true);
  #ifdef USE_UPNP
      fUseUPnP = GetBoolArg("-upnp", USE_UPNP);
  #endif
  
      bool fBound = false;
      if (!fNoListen)
      {
          std::string strError;
          if (mapArgs.count("-bind")) {
              BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
                  CService addrBind;
                  if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
                      return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind.c_str()));
                  fBound |= Bind(addrBind);
              }
          } else {
              struct in_addr inaddr_any;
              inaddr_any.s_addr = INADDR_ANY;
              if (!IsLimited(NET_IPV6))
                  fBound |= Bind(CService(in6addr_any, GetListenPort()), false);
              if (!IsLimited(NET_IPV4))
                  fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound);
          }
          if (!fBound)
              return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
      }
  
      if (mapArgs.count("-externalip"))
      {
          BOOST_FOREACH(string strAddr, mapMultiArgs["-externalip"]) {
              CService addrLocal(strAddr, GetListenPort(), fNameLookup);
              if (!addrLocal.IsValid())
                  return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr.c_str()));
              AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
          }
      }
  
      if (mapArgs.count("-reservebalance")) // ppcoin: reserve balance amount
      {
          if (!ParseMoney(mapArgs["-reservebalance"], nReserveBalance))
          {
              InitError(_("Invalid amount for -reservebalance=<amount>"));
              return false;
          }
      }
  
      if (mapArgs.count("-checkpointkey")) // ppcoin: checkpoint master priv key
      {
          if (!Checkpoints::SetCheckpointPrivKey(GetArg("-checkpointkey", "")))
              InitError(_("Unable to sign checkpoint, wrong checkpointkey?\n"));
      }
  
      BOOST_FOREACH(string strDest, mapMultiArgs["-seednode"])
          AddOneShot(strDest);
  
      // ********************************************************* Step 7: load blockchain
  
      if (!bitdb.Open(GetDataDir()))
      {
          string msg = strprintf(_("Error initializing database environment %s!"
                                   " To recover, BACKUP THAT DIRECTORY, then remove"
                                   " everything from it except for wallet.dat."), strDataDir.c_str());
          return InitError(msg);
      }
  
      if (GetBoolArg("-loadblockindextest"))
      {
          CTxDB txdb("r");
          txdb.LoadBlockIndex();
          PrintBlockTree();
          return false;
      }
  
      uiInterface.InitMessage(_("Loading block index..."));
      printf("Loading block index...\n");
      nStart = GetTimeMillis();
      if (!LoadBlockIndex())
          return InitError(_("Error loading blkindex.dat"));
  
  
      // as LoadBlockIndex can take several minutes, it's possible the user
      // requested to kill bitcoin-qt during the last operation. If so, exit.
      // As the program has not fully started yet, Shutdown() is possibly overkill.
      if (fRequestShutdown)
      {
          printf("Shutdown requested. Exiting.\n");
          return false;
      }
      printf(" block index %15" PRId64 "ms\n", GetTimeMillis() - nStart);
  
      if (GetBoolArg("-printblockindex") || GetBoolArg("-printblocktree"))
      {
          PrintBlockTree();
          return false;
      }
  
      if (mapArgs.count("-printblock"))
      {
          string strMatch = mapArgs["-printblock"];
          int nFound = 0;
          for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
          {
              uint256 hash = (*mi).first;
              if (strncmp(hash.ToString().c_str(), strMatch.c_str(), strMatch.size()) == 0)
              {
                  CBlockIndex* pindex = (*mi).second;
                  CBlock block;
                  block.ReadFromDisk(pindex);
                  block.BuildMerkleTree();
                  block.print();
                  printf("\n");
                  nFound++;
              }
          }
          if (nFound == 0)
              printf("No blocks matching %s were found\n", strMatch.c_str());
          return false;
      }
  
      // ********************************************************* Testing Zerocoin
  
  
      if (GetBoolArg("-zerotest", false))
      {
          printf("\n=== ZeroCoin tests start ===\n");
          Test_RunAllTests();
          printf("=== ZeroCoin tests end ===\n\n");
      }
  
      // ********************************************************* Step 8: load wallet
  
      uiInterface.InitMessage(_("Loading wallet..."));
      printf("Loading wallet...\n");
      nStart = GetTimeMillis();
      bool fFirstRun = true;
      pwalletMain = new CWallet(strWalletFileName);
      DBErrors nLoadWalletRet = pwalletMain->LoadWallet(fFirstRun);
      if (nLoadWalletRet != DB_LOAD_OK)
      {
          if (nLoadWalletRet == DB_CORRUPT)
              strErrors << _("Error loading wallet.dat: Wallet corrupted") << "\n";
          else if (nLoadWalletRet == DB_NONCRITICAL_ERROR)
          {
              string msg(_("Warning: error reading wallet.dat! All keys read correctly, but transaction data"
                           " or address book entries might be missing or incorrect."));
              uiInterface.ThreadSafeMessageBox(msg, _("WayaWolfCoin"), CClientUIInterface::OK | CClientUIInterface::ICON_EXCLAMATION | CClientUIInterface::MODAL);
          }
          else if (nLoadWalletRet == DB_TOO_NEW)
              strErrors << _("Error loading wallet.dat: Wallet requires newer version of WayaWolfCoin") << "\n";
          else if (nLoadWalletRet == DB_NEED_REWRITE)
          {
              strErrors << _("Wallet needed to be rewritten: restart WayaWolfCoin to complete") << "\n";
              printf("%s", strErrors.str().c_str());
              return InitError(strErrors.str());
          }
          else
              strErrors << _("Error loading wallet.dat") << "\n";
      }
  
      if (GetBoolArg("-upgradewallet", fFirstRun))
      {
          int nMaxVersion = GetArg("-upgradewallet", 0);
          if (nMaxVersion == 0) // the -upgradewallet without argument case
          {
              printf("Performing wallet upgrade to %i\n", FEATURE_LATEST);
              nMaxVersion = CLIENT_VERSION;
              pwalletMain->SetMinVersion(FEATURE_LATEST); // permanently upgrade the wallet immediately
          }
          else
              printf("Allowing wallet upgrade up to %i\n", nMaxVersion);
          if (nMaxVersion < pwalletMain->GetVersion())
              strErrors << _("Cannot downgrade wallet") << "\n";
          pwalletMain->SetMaxVersion(nMaxVersion);
      }
  
      if (fFirstRun)
      {
          // Create new keyUser and set as default key
          RandAddSeedPerfmon();
  
          CPubKey newDefaultKey;
          if (pwalletMain->GetKeyFromPool(newDefaultKey, false)) {
              pwalletMain->SetDefaultKey(newDefaultKey);
              if (!pwalletMain->SetAddressBookName(pwalletMain->vchDefaultKey.GetID(), ""))
                  strErrors << _("Cannot write default address") << "\n";
          }
      }
  
      printf("%s", strErrors.str().c_str());
      printf(" wallet      %15" PRId64 "ms\n", GetTimeMillis() - nStart);
  
      RegisterWallet(pwalletMain);
  
      CBlockIndex *pindexRescan = pindexBest;
      if (GetBoolArg("-rescan"))
          pindexRescan = pindexGenesisBlock;
      else
      {
          CWalletDB walletdb(strWalletFileName);
          CBlockLocator locator;
          if (walletdb.ReadBestBlock(locator))
              pindexRescan = locator.GetBlockIndex();
      }
      if (pindexBest != pindexRescan && pindexBest && pindexRescan && pindexBest->nHeight > pindexRescan->nHeight)
      {
          uiInterface.InitMessage(_("Rescanning..."));
          printf("Rescanning last %i blocks (from block %i)...\n", pindexBest->nHeight - pindexRescan->nHeight, pindexRescan->nHeight);
          nStart = GetTimeMillis();
          pwalletMain->ScanForWalletTransactions(pindexRescan, true);
          printf(" rescan      %15" PRId64 "ms\n", GetTimeMillis() - nStart);
      }
  
      // ********************************************************* Step 9: import blocks
  
      if (mapArgs.count("-loadblock"))
      {
          uiInterface.InitMessage(_("Importing blockchain data file."));
  
          BOOST_FOREACH(string strFile, mapMultiArgs["-loadblock"])
          {
              FILE *file = fopen(strFile.c_str(), "rb");
              if (file)
                  LoadExternalBlockFile(file);
          }
          exit(0);
      }
  
      filesystem::path pathBootstrap = GetDataDir() / "bootstrap.dat";
      if (filesystem::exists(pathBootstrap)) {
          uiInterface.InitMessage(_("Importing bootstrap blockchain data file."));
  
          FILE *file = fopen(pathBootstrap.string().c_str(), "rb");
          if (file) {
              filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
              LoadExternalBlockFile(file);
              RenameOver(pathBootstrap, pathBootstrapOld);
          }
      }
  
      // ********************************************************* Step 10: load peers
  
      uiInterface.InitMessage(_("Loading addresses..."));
      printf("Loading addresses...\n");
      nStart = GetTimeMillis();
  
      {
          CAddrDB adb;
          if (!adb.Read(addrman))
              printf("Invalid or missing peers.dat; recreating\n");
      }
  
      printf("Loaded %i addresses from peers.dat  %" PRId64 "ms\n",
             addrman.size(), GetTimeMillis() - nStart);
  
      // ********************************************************* Step 11: start node
  
      if (!CheckDiskSpace())
          return false;
  
      RandAddSeedPerfmon();
  
      //// debug print
      printf("mapBlockIndex.size() = %" PRIszu "\n",   mapBlockIndex.size());
      printf("nBestHeight = %d\n",            nBestHeight);
      printf("setKeyPool.size() = %" PRIszu "\n",      pwalletMain->setKeyPool.size());
      printf("mapWallet.size() = %" PRIszu "\n",       pwalletMain->mapWallet.size());
      printf("mapAddressBook.size() = %" PRIszu "\n",  pwalletMain->mapAddressBook.size());
  
      if (!NewThread(StartNode, NULL))
          InitError(_("Error: could not start node"));
  
      if (fServer)
          NewThread(ThreadRPCServer, NULL);
  
      // ********************************************************* Step 12: finished
  
      uiInterface.InitMessage(_("Done loading"));
      printf("Done loading\n");
  
      if (!strErrors.str().empty())
          return InitError(strErrors.str());
  
       // Add wallet transactions that aren't already in a block to mapTransactions
      pwalletMain->ReacceptWalletTransactions();
  
  #if !defined(QT_GUI)
      // Loop until process is exit()ed from shutdown() function,
      // called from ThreadRPCServer thread when a "stop" command is received.
      while (1)
          MilliSleep(5000);
  #endif
  
      return true;
  }
  