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init.cpp
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init.cpp
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#if defined(HAVE_CONFIG_H)
#include "config/bitcoin-config.h"
#endif
#include "init.h"
#include "addrman.h"
#include "amount.h"
#include "checkpoints.h"
#include "compat/sanity.h"
#include "key.h"
#include "main.h"
#include "miner.h"
#include "net.h"
#include "rpcserver.h"
#include "script/standard.h"
#include "txdb.h"
#include "ui_interface.h"
#include "util.h"
#include "utilmoneystr.h"
#ifdef ENABLE_WALLET
#include "db.h"
#include "wallet.h"
#include "walletdb.h"
#endif
#include <stdint.h>
#include <stdio.h>
#ifndef WIN32
#include <signal.h>
#endif
#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <boost/interprocess/sync/file_lock.hpp>
#include <boost/thread.hpp>
#include <openssl/crypto.h>
using namespace boost;
using namespace std;
#ifdef ENABLE_WALLET
CWallet* pwalletMain = NULL;
#endif
bool fFeeEstimatesInitialized = false;
#ifdef WIN32
// Win32 LevelDB doesn't use filedescriptors, and the ones used for
// accessing block files, don't count towards to fd_set size limit
// anyway.
#define MIN_CORE_FILEDESCRIPTORS 0
#else
#define MIN_CORE_FILEDESCRIPTORS 150
#endif
// Used to pass flags to the Bind() function
enum BindFlags {
BF_NONE = 0,
BF_EXPLICIT = (1U << 0),
BF_REPORT_ERROR = (1U << 1),
BF_WHITELIST = (1U << 2),
};
static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
CClientUIInterface uiInterface;
//////////////////////////////////////////////////////////////////////////////
//
// Shutdown
//
//
// Thread management and startup/shutdown:
//
// The network-processing threads are all part of a thread group
// created by AppInit() or the Qt main() function.
//
// A clean exit happens when StartShutdown() or the SIGTERM
// signal handler sets fRequestShutdown, which triggers
// the DetectShutdownThread(), which interrupts the main thread group.
// DetectShutdownThread() then exits, which causes AppInit() to
// continue (it .joins the shutdown thread).
// Shutdown() is then
// called to clean up database connections, and stop other
// threads that should only be stopped after the main network-processing
// threads have exited.
//
// Note that if running -daemon the parent process returns from AppInit2
// before adding any threads to the threadGroup, so .join_all() returns
// immediately and the parent exits from main().
//
// Shutdown for Qt is very similar, only it uses a QTimer to detect
// fRequestShutdown getting set, and then does the normal Qt
// shutdown thing.
//
volatile bool fRequestShutdown = false;
void StartShutdown()
{
fRequestShutdown = true;
}
bool ShutdownRequested()
{
return fRequestShutdown;
}
static CCoinsViewDB *pcoinsdbview = NULL;
void Shutdown()
{
LogPrintf("%s: In progress...\n", __func__);
static CCriticalSection cs_Shutdown;
TRY_LOCK(cs_Shutdown, lockShutdown);
if (!lockShutdown)
return;
/// Note: Shutdown() must be able to handle cases in which AppInit2() failed part of the way,
/// for example if the data directory was found to be locked.
/// Be sure that anything that writes files or flushes caches only does this if the respective
/// module was initialized.
RenameThread("bitcoin-shutoff");
mempool.AddTransactionsUpdated(1);
StopRPCThreads();
#ifdef ENABLE_WALLET
if (pwalletMain)
bitdb.Flush(false);
GenerateBitcoins(false, NULL, 0);
#endif
StopNode();
UnregisterNodeSignals(GetNodeSignals());
if (fFeeEstimatesInitialized)
{
boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
CAutoFile est_fileout(fopen(est_path.string().c_str(), "wb"), SER_DISK, CLIENT_VERSION);
if (!est_fileout.IsNull())
mempool.WriteFeeEstimates(est_fileout);
else
LogPrintf("%s: Failed to write fee estimates to %s\n", __func__, est_path.string());
fFeeEstimatesInitialized = false;
}
{
LOCK(cs_main);
#ifdef ENABLE_WALLET
if (pwalletMain)
pwalletMain->SetBestChain(chainActive.GetLocator());
#endif
if (pblocktree)
pblocktree->Flush();
if (pcoinsTip)
pcoinsTip->Flush();
delete pcoinsTip;
pcoinsTip = NULL;
delete pcoinsdbview;
pcoinsdbview = NULL;
delete pblocktree;
pblocktree = NULL;
}
#ifdef ENABLE_WALLET
if (pwalletMain)
bitdb.Flush(true);
#endif
#ifndef WIN32
boost::filesystem::remove(GetPidFile());
#endif
UnregisterAllValidationInterfaces();
#ifdef ENABLE_WALLET
delete pwalletMain;
pwalletMain = NULL;
#endif
LogPrintf("%s: done\n", __func__);
}
//
// Signal handlers are very limited in what they are allowed to do, so:
//
void HandleSIGTERM(int)
{
fRequestShutdown = true;
}
void HandleSIGHUP(int)
{
fReopenDebugLog = true;
}
bool static InitError(const std::string &str)
{
uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
return false;
}
bool static InitWarning(const std::string &str)
{
uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
return true;
}
bool static Bind(const CService &addr, unsigned int flags) {
if (!(flags & BF_EXPLICIT) && IsLimited(addr))
return false;
std::string strError;
if (!BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
if (flags & BF_REPORT_ERROR)
return InitError(strError);
return false;
}
return true;
}
std::string HelpMessage(HelpMessageMode mode)
{
// When adding new options to the categories, please keep and ensure alphabetical ordering.
string strUsage = _("Options:") + "\n";
strUsage += " -? " + _("This help message") + "\n";
strUsage += " -alertnotify=<cmd> " + _("Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message)") + "\n";
strUsage += " -blocknotify=<cmd> " + _("Execute command when the best block changes (%s in cmd is replaced by block hash)") + "\n";
strUsage += " -checkblocks=<n> " + strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), 288) + "\n";
strUsage += " -checklevel=<n> " + strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), 3) + "\n";
strUsage += " -conf=<file> " + strprintf(_("Specify configuration file (default: %s)"), "bitcoin.conf") + "\n";
if (mode == HMM_BITCOIND)
{
#if !defined(WIN32)
strUsage += " -daemon " + _("Run in the background as a daemon and accept commands") + "\n";
#endif
}
strUsage += " -datadir=<dir> " + _("Specify data directory") + "\n";
strUsage += " -dbcache=<n> " + strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache) + "\n";
strUsage += " -loadblock=<file> " + _("Imports blocks from external blk000??.dat file") + " " + _("on startup") + "\n";
strUsage += " -maxorphanblocks=<n> " + strprintf(_("Keep at most <n> unconnectable blocks in memory (default: %u)"), DEFAULT_MAX_ORPHAN_BLOCKS) + "\n";
strUsage += " -maxorphantx=<n> " + strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS) + "\n";
strUsage += " -par=<n> " + strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"), -(int)boost::thread::hardware_concurrency(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS) + "\n";
#ifndef WIN32
strUsage += " -pid=<file> " + strprintf(_("Specify pid file (default: %s)"), "bitcoind.pid") + "\n";
#endif
strUsage += " -reindex " + _("Rebuild block chain index from current blk000??.dat files") + " " + _("on startup") + "\n";
#if !defined(WIN32)
strUsage += " -sysperms " + _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)") + "\n";
#endif
strUsage += " -txindex " + strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), 0) + "\n";
strUsage += "\n" + _("Connection options:") + "\n";
strUsage += " -addnode=<ip> " + _("Add a node to connect to and attempt to keep the connection open") + "\n";
strUsage += " -banscore=<n> " + strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), 100) + "\n";
strUsage += " -bantime=<n> " + strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), 86400) + "\n";
strUsage += " -bind=<addr> " + _("Bind to given address and always listen on it. Use [host]:port notation for IPv6") + "\n";
strUsage += " -connect=<ip> " + _("Connect only to the specified node(s)") + "\n";
strUsage += " -discover " + _("Discover own IP address (default: 1 when listening and no -externalip)") + "\n";
strUsage += " -dns " + _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + _("(default: 1)") + "\n";
strUsage += " -dnsseed " + _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)") + "\n";
strUsage += " -externalip=<ip> " + _("Specify your own public address") + "\n";
strUsage += " -forcednsseed " + strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), 0) + "\n";
strUsage += " -listen " + _("Accept connections from outside (default: 1 if no -proxy or -connect)") + "\n";
strUsage += " -maxconnections=<n> " + strprintf(_("Maintain at most <n> connections to peers (default: %u)"), 125) + "\n";
strUsage += " -maxreceivebuffer=<n> " + strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), 5000) + "\n";
strUsage += " -maxsendbuffer=<n> " + strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), 1000) + "\n";
strUsage += " -onion=<ip:port> " + strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy") + "\n";
strUsage += " -onlynet=<net> " + _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)") + "\n";
strUsage += " -permitbaremultisig " + strprintf(_("Relay non-P2SH multisig (default: %u)"), 1) + "\n";
strUsage += " -port=<port> " + strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 8333, 18333) + "\n";
strUsage += " -proxy=<ip:port> " + _("Connect through SOCKS5 proxy") + "\n";
strUsage += " -seednode=<ip> " + _("Connect to a node to retrieve peer addresses, and disconnect") + "\n";
strUsage += " -timeout=<n> " + strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT) + "\n";
#ifdef USE_UPNP
#if USE_UPNP
strUsage += " -upnp " + _("Use UPnP to map the listening port (default: 1 when listening)") + "\n";
#else
strUsage += " -upnp " + strprintf(_("Use UPnP to map the listening port (default: %u)"), 0) + "\n";
#endif
#endif
strUsage += " -whitebind=<addr> " + _("Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6") + "\n";
strUsage += " -whitelist=<netmask> " + _("Whitelist peers connecting from the given netmask or IP address. Can be specified multiple times.") + "\n";
strUsage += " " + _("Whitelisted peers cannot be DoS banned and their transactions are always relayed, even if they are already in the mempool, useful e.g. for a gateway") + "\n";
#ifdef ENABLE_WALLET
strUsage += "\n" + _("Wallet options:") + "\n";
strUsage += " -disablewallet " + _("Do not load the wallet and disable wallet RPC calls") + "\n";
strUsage += " -keypool=<n> " + strprintf(_("Set key pool size to <n> (default: %u)"), 100) + "\n";
if (GetBoolArg("-help-debug", false))
strUsage += " -mintxfee=<amt> " + strprintf(_("Fees (in BTC/Kb) smaller than this are considered zero fee for transaction creation (default: %s)"), FormatMoney(CWallet::minTxFee.GetFeePerK())) + "\n";
strUsage += " -paytxfee=<amt> " + strprintf(_("Fee (in BTC/kB) to add to transactions you send (default: %s)"), FormatMoney(payTxFee.GetFeePerK())) + "\n";
strUsage += " -rescan " + _("Rescan the block chain for missing wallet transactions") + " " + _("on startup") + "\n";
strUsage += " -salvagewallet " + _("Attempt to recover private keys from a corrupt wallet.dat") + " " + _("on startup") + "\n";
strUsage += " -spendzeroconfchange " + strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), 1) + "\n";
strUsage += " -txconfirmtarget=<n> " + strprintf(_("If paytxfee is not set, include enough fee so transactions are confirmed on average within n blocks (default: %u)"), 1) + "\n";
strUsage += " -upgradewallet " + _("Upgrade wallet to latest format") + " " + _("on startup") + "\n";
strUsage += " -wallet=<file> " + _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), "wallet.dat") + "\n";
strUsage += " -walletnotify=<cmd> " + _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)") + "\n";
strUsage += " -zapwallettxes=<mode> " + _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") + "\n";
strUsage += " " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)") + "\n";
#endif
strUsage += "\n" + _("Debugging/Testing options:") + "\n";
if (GetBoolArg("-help-debug", false))
{
strUsage += " -checkpoints " + strprintf(_("Only accept block chain matching built-in checkpoints (default: %u)"), 1) + "\n";
strUsage += " -dblogsize=<n> " + strprintf(_("Flush database activity from memory pool to disk log every <n> megabytes (default: %u)"), 100) + "\n";
strUsage += " -disablesafemode " + strprintf(_("Disable safemode, override a real safe mode event (default: %u)"), 0) + "\n";
strUsage += " -testsafemode " + strprintf(_("Force safe mode (default: %u)"), 0) + "\n";
strUsage += " -dropmessagestest=<n> " + _("Randomly drop 1 of every <n> network messages") + "\n";
strUsage += " -fuzzmessagestest=<n> " + _("Randomly fuzz 1 of every <n> network messages") + "\n";
strUsage += " -flushwallet " + strprintf(_("Run a thread to flush wallet periodically (default: %u)"), 1) + "\n";
strUsage += " -stopafterblockimport " + strprintf(_("Stop running after importing blocks from disk (default: %u)"), 0) + "\n";
}
strUsage += " -debug=<category> " + strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + "\n";
strUsage += " " + _("If <category> is not supplied, output all debugging information.") + "\n";
strUsage += " " + _("<category> can be:");
strUsage += " addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net"; // Don't translate these and qt below
if (mode == HMM_BITCOIN_QT)
strUsage += ", qt";
strUsage += ".\n";
#ifdef ENABLE_WALLET
strUsage += " -gen " + strprintf(_("Generate coins (default: %u)"), 0) + "\n";
strUsage += " -genproclimit=<n> " + strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), 1) + "\n";
#endif
strUsage += " -help-debug " + _("Show all debugging options (usage: --help -help-debug)") + "\n";
strUsage += " -logips " + strprintf(_("Include IP addresses in debug output (default: %u)"), 0) + "\n";
strUsage += " -logtimestamps " + strprintf(_("Prepend debug output with timestamp (default: %u)"), 1) + "\n";
if (GetBoolArg("-help-debug", false))
{
strUsage += " -limitfreerelay=<n> " + strprintf(_("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default:%u)"), 15) + "\n";
strUsage += " -maxsigcachesize=<n> " + strprintf(_("Limit size of signature cache to <n> entries (default: %u)"), 50000) + "\n";
}
strUsage += " -minrelaytxfee=<amt> " + strprintf(_("Fees (in BTC/Kb) smaller than this are considered zero fee for relaying (default: %s)"), FormatMoney(::minRelayTxFee.GetFeePerK())) + "\n";
strUsage += " -printtoconsole " + _("Send trace/debug info to console instead of debug.log file") + "\n";
if (GetBoolArg("-help-debug", false))
{
strUsage += " -printblock=<hash> " + _("Print block on startup, if found in block index") + "\n";
strUsage += " -printblocktree " + strprintf(_("Print block tree on startup (default: %u)"), 0) + "\n";
strUsage += " -printpriority " + strprintf(_("Log transaction priority and fee per kB when mining blocks (default: %u)"), 0) + "\n";
strUsage += " -privdb " + strprintf(_("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)"), 1) + "\n";
strUsage += " -regtest " + _("Enter regression test mode, which uses a special chain in which blocks can be solved instantly.") + "\n";
strUsage += " " + _("This is intended for regression testing tools and app development.") + "\n";
strUsage += " " + _("In this mode -genproclimit controls how many blocks are generated immediately.") + "\n";
}
strUsage += " -shrinkdebugfile " + _("Shrink debug.log file on client startup (default: 1 when no -debug)") + "\n";
strUsage += " -testnet " + _("Use the test network") + "\n";
strUsage += "\n" + _("Node relay options:") + "\n";
strUsage += " -datacarrier " + strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1) + "\n";
strUsage += " -datacarriersize " + strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY) + "\n";
strUsage += "\n" + _("Block creation options:") + "\n";
strUsage += " -blockminsize=<n> " + strprintf(_("Set minimum block size in bytes (default: %u)"), 0) + "\n";
strUsage += " -blockmaxsize=<n> " + strprintf(_("Set maximum block size in bytes (default: %d)"), DEFAULT_BLOCK_MAX_SIZE) + "\n";
strUsage += " -blockprioritysize=<n> " + strprintf(_("Set maximum size of high-priority/low-fee transactions in bytes (default: %d)"), DEFAULT_BLOCK_PRIORITY_SIZE) + "\n";
strUsage += "\n" + _("RPC server options:") + "\n";
strUsage += " -server " + _("Accept command line and JSON-RPC commands") + "\n";
strUsage += " -rpcbind=<addr> " + _("Bind to given address to listen for JSON-RPC connections. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces)") + "\n";
strUsage += " -rpcuser=<user> " + _("Username for JSON-RPC connections") + "\n";
strUsage += " -rpcpassword=<pw> " + _("Password for JSON-RPC connections") + "\n";
strUsage += " -rpcport=<port> " + strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), 8332, 18332) + "\n";
strUsage += " -rpcallowip=<ip> " + _("Allow JSON-RPC connections from specified source. Valid for <ip> are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times") + "\n";
strUsage += " -rpcthreads=<n> " + strprintf(_("Set the number of threads to service RPC calls (default: %d)"), 4) + "\n";
strUsage += "\n" + _("RPC SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n";
strUsage += " -rpcssl " + _("Use OpenSSL (https) for JSON-RPC connections") + "\n";
strUsage += " -rpcsslcertificatechainfile=<file.cert> " + strprintf(_("Server certificate file (default: %s)"), "server.cert") + "\n";
strUsage += " -rpcsslprivatekeyfile=<file.pem> " + strprintf(_("Server private key (default: %s)"), "server.pem") + "\n";
strUsage += " -rpcsslciphers=<ciphers> " + strprintf(_("Acceptable ciphers (default: %s)"), "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH") + "\n";
return strUsage;
}
std::string LicenseInfo()
{
return FormatParagraph(strprintf(_("Copyright (C) 2009-%i The Bitcoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
"\n" +
FormatParagraph(_("This is experimental software.")) + "\n" +
"\n" +
FormatParagraph(_("Distributed under the MIT/X11 software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.")) + "\n" +
"\n" +
FormatParagraph(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit <https://www.openssl.org/> and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard.")) +
"\n";
}
static void BlockNotifyCallback(const uint256& hashNewTip)
{
std::string strCmd = GetArg("-blocknotify", "");
boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
boost::thread t(runCommand, strCmd); // thread runs free
}
struct CImportingNow
{
CImportingNow() {
assert(fImporting == false);
fImporting = true;
}
~CImportingNow() {
assert(fImporting == true);
fImporting = false;
}
};
void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
{
RenameThread("bitcoin-loadblk");
// -reindex
if (fReindex) {
CImportingNow imp;
int nFile = 0;
while (true) {
CDiskBlockPos pos(nFile, 0);
if (!boost::filesystem::exists(GetBlockPosFilename(pos, "blk")))
break; // No block files left to reindex
FILE *file = OpenBlockFile(pos, true);
if (!file)
break; // This error is logged in OpenBlockFile
LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
LoadExternalBlockFile(file, &pos);
nFile++;
}
pblocktree->WriteReindexing(false);
fReindex = false;
LogPrintf("Reindexing finished\n");
// To avoid ending up in a situation without genesis block, re-try initializing (no-op if reindexing worked):
InitBlockIndex();
}
// hardcoded $DATADIR/bootstrap.dat
filesystem::path pathBootstrap = GetDataDir() / "bootstrap.dat";
if (filesystem::exists(pathBootstrap)) {
FILE *file = fopen(pathBootstrap.string().c_str(), "rb");
if (file) {
CImportingNow imp;
filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
LogPrintf("Importing bootstrap.dat...\n");
LoadExternalBlockFile(file);
RenameOver(pathBootstrap, pathBootstrapOld);
} else {
LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());
}
}
// -loadblock=
BOOST_FOREACH(boost::filesystem::path &path, vImportFiles) {
FILE *file = fopen(path.string().c_str(), "rb");
if (file) {
CImportingNow imp;
LogPrintf("Importing blocks file %s...\n", path.string());
LoadExternalBlockFile(file);
} else {
LogPrintf("Warning: Could not open blocks file %s\n", path.string());
}
}
if (GetBoolArg("-stopafterblockimport", false)) {
LogPrintf("Stopping after block import\n");
StartShutdown();
}
}
/** Sanity checks
* Ensure that 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;
}
if (!glibc_sanity_test() || !glibcxx_sanity_test())
return false;
return true;
}
/** Initialize bitcoin.
* @pre Parameters should be parsed and config file should be read.
*/
bool AppInit2(boost::thread_group& threadGroup)
{
// ********************************************************* Step 1: setup
#ifdef _MSC_VER
// Turn off Microsoft heap dump noise
_CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
_CrtSetReportFile(_CRT_WARN, CreateFileA("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
#endif
#if _MSC_VER >= 1400
// Disable confusing "helpful" text message on abort, Ctrl-C
_set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
#endif
#ifdef WIN32
// Enable Data Execution Prevention (DEP)
// Minimum supported OS versions: WinXP SP3, WinVista >= SP1, Win Server 2008
// A failure is non-critical and needs no further attention!
#ifndef PROCESS_DEP_ENABLE
// We define this here, because GCCs winbase.h limits this to _WIN32_WINNT >= 0x0601 (Windows 7),
// which is not correct. Can be removed, when GCCs winbase.h is fixed!
#define PROCESS_DEP_ENABLE 0x00000001
#endif
typedef BOOL (WINAPI *PSETPROCDEPPOL)(DWORD);
PSETPROCDEPPOL setProcDEPPol = (PSETPROCDEPPOL)GetProcAddress(GetModuleHandleA("Kernel32.dll"), "SetProcessDEPPolicy");
if (setProcDEPPol != NULL) setProcDEPPol(PROCESS_DEP_ENABLE);
// Initialize Windows Sockets
WSADATA wsadata;
int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
if (ret != NO_ERROR || LOBYTE(wsadata.wVersion ) != 2 || HIBYTE(wsadata.wVersion) != 2)
{
return InitError(strprintf("Error: Winsock library failed to start (WSAStartup returned error %d)", ret));
}
#endif
#ifndef WIN32
if (GetBoolArg("-sysperms", false)) {
#ifdef ENABLE_WALLET
if (!GetBoolArg("-disablewallet", false))
return InitError("Error: -sysperms is not allowed in combination with enabled wallet functionality");
#endif
} else {
umask(077);
}
// Clean shutdown on SIGTERM
struct sigaction sa;
sa.sa_handler = HandleSIGTERM;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
// Reopen debug.log on SIGHUP
struct sigaction sa_hup;
sa_hup.sa_handler = HandleSIGHUP;
sigemptyset(&sa_hup.sa_mask);
sa_hup.sa_flags = 0;
sigaction(SIGHUP, &sa_hup, NULL);
#if defined (__SVR4) && defined (__sun)
// ignore SIGPIPE on Solaris
signal(SIGPIPE, SIG_IGN);
#endif
#endif
// ********************************************************* Step 2: parameter interactions
// Set this early so that parameter interactions go to console
fPrintToConsole = GetBoolArg("-printtoconsole", false);
fLogTimestamps = GetBoolArg("-logtimestamps", true);
fLogIPs = GetBoolArg("-logips", false);
if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
// when specifying an explicit binding address, you want to listen on it
// even when -connect or -proxy is specified
if (SoftSetBoolArg("-listen", true))
LogPrintf("AppInit2 : parameter interaction: -bind or -whitebind set -> setting -listen=1\n");
}
if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
// when only connecting to trusted nodes, do not seed via DNS, or listen by default
if (SoftSetBoolArg("-dnsseed", false))
LogPrintf("AppInit2 : parameter interaction: -connect set -> setting -dnsseed=0\n");
if (SoftSetBoolArg("-listen", false))
LogPrintf("AppInit2 : parameter interaction: -connect set -> setting -listen=0\n");
}
if (mapArgs.count("-proxy")) {
// to protect privacy, do not listen by default if a default proxy server is specified
if (SoftSetBoolArg("-listen", false))
LogPrintf("AppInit2 : parameter interaction: -proxy set -> setting -listen=0\n");
}
if (!GetBoolArg("-listen", true)) {
// do not map ports or try to retrieve public IP when not listening (pointless)
if (SoftSetBoolArg("-upnp", false))
LogPrintf("AppInit2 : parameter interaction: -listen=0 -> setting -upnp=0\n");
if (SoftSetBoolArg("-discover", false))
LogPrintf("AppInit2 : parameter interaction: -listen=0 -> setting -discover=0\n");
}
if (mapArgs.count("-externalip")) {
// if an explicit public IP is specified, do not try to find others
if (SoftSetBoolArg("-discover", false))
LogPrintf("AppInit2 : parameter interaction: -externalip set -> setting -discover=0\n");
}
if (GetBoolArg("-salvagewallet", false)) {
// Rewrite just private keys: rescan to find transactions
if (SoftSetBoolArg("-rescan", true))
LogPrintf("AppInit2 : parameter interaction: -salvagewallet=1 -> setting -rescan=1\n");
}
// -zapwallettx implies a rescan
if (GetBoolArg("-zapwallettxes", false)) {
if (SoftSetBoolArg("-rescan", true))
LogPrintf("AppInit2 : parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n");
}
// Make sure enough file descriptors are available
int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);
nMaxConnections = GetArg("-maxconnections", 125);
nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS)), 0);
int nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS);
if (nFD < MIN_CORE_FILEDESCRIPTORS)
return InitError(_("Not enough file descriptors available."));
if (nFD - MIN_CORE_FILEDESCRIPTORS < nMaxConnections)
nMaxConnections = nFD - MIN_CORE_FILEDESCRIPTORS;
// ********************************************************* Step 3: parameter-to-internal-flags
fDebug = !mapMultiArgs["-debug"].empty();
// Special-case: if -debug=0/-nodebug is set, turn off debugging messages
const vector<string>& categories = mapMultiArgs["-debug"];
if (GetBoolArg("-nodebug", false) || find(categories.begin(), categories.end(), string("0")) != categories.end())
fDebug = false;
// Check for -debugnet
if (GetBoolArg("-debugnet", false))
InitWarning(_("Warning: Unsupported argument -debugnet ignored, use -debug=net."));
// Check for -socks - as this is a privacy risk to continue, exit here
if (mapArgs.count("-socks"))
return InitError(_("Error: Unsupported argument -socks found. Setting SOCKS version isn't possible anymore, only SOCKS5 proxies are supported."));
// Check for -tor - as this is a privacy risk to continue, exit here
if (GetBoolArg("-tor", false))
return InitError(_("Error: Unsupported argument -tor found, use -onion."));
if (GetBoolArg("-benchmark", false))
InitWarning(_("Warning: Unsupported argument -benchmark ignored, use -debug=bench."));
// Checkmempool defaults to true in regtest mode
mempool.setSanityCheck(GetBoolArg("-checkmempool", Params().DefaultCheckMemPool()));
Checkpoints::fEnabled = GetBoolArg("-checkpoints", true);
// -par=0 means autodetect, but nScriptCheckThreads==0 means no concurrency
nScriptCheckThreads = GetArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
if (nScriptCheckThreads <= 0)
nScriptCheckThreads += boost::thread::hardware_concurrency();
if (nScriptCheckThreads <= 1)
nScriptCheckThreads = 0;
else if (nScriptCheckThreads > MAX_SCRIPTCHECK_THREADS)
nScriptCheckThreads = MAX_SCRIPTCHECK_THREADS;
fServer = GetBoolArg("-server", false);
#ifdef ENABLE_WALLET
bool fDisableWallet = GetBoolArg("-disablewallet", false);
#endif
nConnectTimeout = GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
if (nConnectTimeout <= 0)
nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
// Continue to put "/P2SH/" in the coinbase to monitor
// BIP16 support.
// This can be removed eventually...
const char* pszP2SH = "/P2SH/";
COINBASE_FLAGS << std::vector<unsigned char>(pszP2SH, pszP2SH+strlen(pszP2SH));
// Fee-per-kilobyte amount considered the same as "free"
// If you are mining, be careful setting this:
// if you set it to zero then
// a transaction spammer can cheaply fill blocks using
// 1-satoshi-fee transactions. It should be set above the real
// cost to you of processing a transaction.
if (mapArgs.count("-minrelaytxfee"))
{
CAmount n = 0;
if (ParseMoney(mapArgs["-minrelaytxfee"], n) && n > 0)
::minRelayTxFee = CFeeRate(n);
else
return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"]));
}
#ifdef ENABLE_WALLET
if (mapArgs.count("-mintxfee"))
{
CAmount n = 0;
if (ParseMoney(mapArgs["-mintxfee"], n) && n > 0)
CWallet::minTxFee = CFeeRate(n);
else
return InitError(strprintf(_("Invalid amount for -mintxfee=<amount>: '%s'"), mapArgs["-mintxfee"]));
}
if (mapArgs.count("-paytxfee"))
{
CAmount nFeePerK = 0;
if (!ParseMoney(mapArgs["-paytxfee"], nFeePerK))
return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s'"), mapArgs["-paytxfee"]));
if (nFeePerK > nHighTransactionFeeWarning)
InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
payTxFee = CFeeRate(nFeePerK, 1000);
if (payTxFee < ::minRelayTxFee)
{
return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
mapArgs["-paytxfee"], ::minRelayTxFee.ToString()));
}
}
nTxConfirmTarget = GetArg("-txconfirmtarget", 1);
bSpendZeroConfChange = GetArg("-spendzeroconfchange", true);
std::string strWalletFile = GetArg("-wallet", "wallet.dat");
#endif // ENABLE_WALLET
fIsBareMultisigStd = GetArg("-permitbaremultisig", true) != 0;
nMaxDatacarrierBytes = GetArg("-datacarriersize", nMaxDatacarrierBytes);
// ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
// Sanity check
if (!InitSanityCheck())
return InitError(_("Initialization sanity check failed. Bitcoin Core is shutting down."));
std::string strDataDir = GetDataDir().string();
#ifdef ENABLE_WALLET
// Wallet file must be a plain filename without a directory
if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
#endif
// Make sure only a single 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. Bitcoin Core is probably already running."), strDataDir));
#ifndef WIN32
CreatePidFile(GetPidFile(), getpid());
#endif
if (GetBoolArg("-shrinkdebugfile", !fDebug))
ShrinkDebugFile();
LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
LogPrintf("Bitcoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
#ifdef ENABLE_WALLET
LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
#endif
if (!fLogTimestamps)
LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
LogPrintf("Using data directory %s\n", strDataDir);
LogPrintf("Using config file %s\n", GetConfigFile().string());
LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
std::ostringstream strErrors;
LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
if (nScriptCheckThreads) {
for (int i=0; i<nScriptCheckThreads-1; i++)
threadGroup.create_thread(&ThreadScriptCheck);
}
/* Start the RPC server already. It will be started in "warmup" mode
* and not really process calls already (but it will signify connections
* that the server is there and will be ready later). Warmup mode will
* be disabled when initialisation is finished.
*/
if (fServer)
{
uiInterface.InitMessage.connect(SetRPCWarmupStatus);
StartRPCThreads();
}
int64_t nStart;
// ********************************************************* Step 5: verify wallet database integrity
#ifdef ENABLE_WALLET
if (!fDisableWallet) {
LogPrintf("Using wallet %s\n", strWalletFile);
uiInterface.InitMessage(_("Verifying wallet..."));
if (!bitdb.Open(GetDataDir()))
{
// try moving the database env out of the way
boost::filesystem::path pathDatabase = GetDataDir() / "database";
boost::filesystem::path pathDatabaseBak = GetDataDir() / strprintf("database.%d.bak", GetTime());
try {
boost::filesystem::rename(pathDatabase, pathDatabaseBak);
LogPrintf("Moved old %s to %s. Retrying.\n", pathDatabase.string(), pathDatabaseBak.string());
} catch(boost::filesystem::filesystem_error &error) {
// failure is ok (well, not really, but it's not worse than what we started with)
}
// try again
if (!bitdb.Open(GetDataDir())) {
// if it still fails, it probably means we can't even create the database env
string msg = strprintf(_("Error initializing wallet database environment %s!"), strDataDir);
return InitError(msg);
}
}
if (GetBoolArg("-salvagewallet", false))
{
// Recover readable keypairs:
if (!CWalletDB::Recover(bitdb, strWalletFile, true))
return false;
}
if (filesystem::exists(GetDataDir() / strWalletFile))
{
CDBEnv::VerifyResult r = bitdb.Verify(strWalletFile, CWalletDB::Recover);
if (r == CDBEnv::RECOVER_OK)
{
string msg = strprintf(_("Warning: wallet.dat corrupt, data salvaged!"
" Original wallet.dat saved as wallet.{timestamp}.bak in %s; if"
" your balance or transactions are incorrect you should"
" restore from a backup."), strDataDir);
InitWarning(msg);
}
if (r == CDBEnv::RECOVER_FAIL)
return InitError(_("wallet.dat corrupt, salvage failed"));
}
} // (!fDisableWallet)
#endif // ENABLE_WALLET
// ********************************************************* Step 6: network initialization
RegisterNodeSignals(GetNodeSignals());
if (mapArgs.count("-onlynet")) {
std::set<enum Network> nets;
BOOST_FOREACH(std::string snet, mapMultiArgs["-onlynet"]) {
enum Network net = ParseNetwork(snet);
if (net == NET_UNROUTABLE)
return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet));
nets.insert(net);
}
for (int n = 0; n < NET_MAX; n++) {
enum Network net = (enum Network)n;
if (!nets.count(net))
SetLimited(net);
}
}
if (mapArgs.count("-whitelist")) {
BOOST_FOREACH(const std::string& net, mapMultiArgs["-whitelist"]) {
CSubNet subnet(net);
if (!subnet.IsValid())
return InitError(strprintf(_("Invalid netmask specified in -whitelist: '%s'"), net));
CNode::AddWhitelistedRange(subnet);
}
}
CService addrProxy;
bool fProxy = false;
if (mapArgs.count("-proxy")) {
addrProxy = CService(mapArgs["-proxy"], 9050);
if (!addrProxy.IsValid())
return InitError(strprintf(_("Invalid -proxy address: '%s'"), mapArgs["-proxy"]));
if (!IsLimited(NET_IPV4))
SetProxy(NET_IPV4, addrProxy);
if (!IsLimited(NET_IPV6))
SetProxy(NET_IPV6, addrProxy);
SetNameProxy(addrProxy);
fProxy = true;
}
// -onion can override normal proxy, -noonion disables tor entirely
if (!(mapArgs.count("-onion") && mapArgs["-onion"] == "0") &&
(fProxy || mapArgs.count("-onion"))) {
CService addrOnion;
if (!mapArgs.count("-onion"))
addrOnion = addrProxy;
else
addrOnion = CService(mapArgs["-onion"], 9050);
if (!addrOnion.IsValid())
return InitError(strprintf(_("Invalid -onion address: '%s'"), mapArgs["-onion"]));
SetProxy(NET_TOR, addrOnion);
SetReachable(NET_TOR);
}
// see Step 2: parameter interactions for more information about these
fListen = GetBoolArg("-listen", DEFAULT_LISTEN);
fDiscover = GetBoolArg("-discover", true);
fNameLookup = GetBoolArg("-dns", true);
bool fBound = false;
if (fListen) {
if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind));
fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
}
BOOST_FOREACH(std::string strBind, mapMultiArgs["-whitebind"]) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, 0, false))
return InitError(strprintf(_("Cannot resolve -whitebind address: '%s'"), strBind));
if (addrBind.GetPort() == 0)
return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
}
}
else {
struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY;
fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
}
if (!fBound)
return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
}
if (mapArgs.count("-externalip")) {
BOOST_FOREACH(string strAddr, mapMultiArgs["-externalip"]) {
CService addrLocal(strAddr, GetListenPort(), fNameLookup);
if (!addrLocal.IsValid())
return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr));
AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
}
}
BOOST_FOREACH(string strDest, mapMultiArgs["-seednode"])
AddOneShot(strDest);
// ********************************************************* Step 7: load block chain
fReindex = GetBoolArg("-reindex", false);
// Upgrading to 0.8; hard-link the old blknnnn.dat files into /blocks/
filesystem::path blocksDir = GetDataDir() / "blocks";
if (!filesystem::exists(blocksDir))
{
filesystem::create_directories(blocksDir);
bool linked = false;
for (unsigned int i = 1; i < 10000; i++) {
filesystem::path source = GetDataDir() / strprintf("blk%04u.dat", i);
if (!filesystem::exists(source)) break;
filesystem::path dest = blocksDir / strprintf("blk%05u.dat", i-1);
try {
filesystem::create_hard_link(source, dest);
LogPrintf("Hardlinked %s -> %s\n", source.string(), dest.string());
linked = true;
} catch (filesystem::filesystem_error & e) {
// Note: hardlink creation failing is not a disaster, it just means
// blocks will get re-downloaded from peers.
LogPrintf("Error hardlinking blk%04u.dat : %s\n", i, e.what());
break;
}
}
if (linked)
{
fReindex = true;
}
}
// cache size calculations
size_t nTotalCache = (GetArg("-dbcache", nDefaultDbCache) << 20);
if (nTotalCache < (nMinDbCache << 20))
nTotalCache = (nMinDbCache << 20); // total cache cannot be less than nMinDbCache
else if (nTotalCache > (nMaxDbCache << 20))
nTotalCache = (nMaxDbCache << 20); // total cache cannot be greater than nMaxDbCache
size_t nBlockTreeDBCache = nTotalCache / 8;
if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", false))
nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
nTotalCache -= nBlockTreeDBCache;
size_t nCoinDBCache = nTotalCache / 2; // use half of the remaining cache for coindb cache
nTotalCache -= nCoinDBCache;
nCoinCacheSize = nTotalCache / 300; // coins in memory require around 300 bytes
bool fLoaded = false;
while (!fLoaded) {
bool fReset = fReindex;
std::string strLoadError;
uiInterface.InitMessage(_("Loading block index..."));
nStart = GetTimeMillis();
do {
try {
UnloadBlockIndex();
delete pcoinsTip;
delete pcoinsdbview;
delete pblocktree;
pblocktree = new CBlockTreeDB(nBlockTreeDBCache, false, fReindex);
pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex);
pcoinsTip = new CCoinsViewCache(pcoinsdbview);
if (fReindex)
pblocktree->WriteReindexing(true);
if (!LoadBlockIndex()) {
strLoadError = _("Error loading block database");
break;
}
// If the loaded chain has a wrong genesis, bail out immediately
// (we're likely using a testnet datadir, or the other way around).
if (!mapBlockIndex.empty() && mapBlockIndex.count(Params().HashGenesisBlock()) == 0)
return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));
// Initialize the block index (no-op if non-empty database was already loaded)
if (!InitBlockIndex()) {
strLoadError = _("Error initializing block database");
break;
}