json::Node PreparedQueryBase::_refetchStringValue( const std::size_t index ){
// These types which are of uncertain size we must fetch separately now that we know how much
// space to allocate.
MYSQL_BIND& binder = m_results[ index ];
if( *binder.length == 0 ){
return json::Node( "", "" );
}
// It is not empty, so create a new binder and copy over this one's values.
MYSQL_BIND rightSizeBinder;
memcpy( &rightSizeBinder, &binder, sizeof( MYSQL_BIND ) );
rightSizeBinder.buffer = new char[ (*binder.length) + 1 ];
rightSizeBinder.buffer_length = (*binder.length) + 1;
// Now fetch the column with our right-sized buffer.
try {
mysql_stmt_fetch_column( m_statement, &rightSizeBinder, index, 0 );
LW_MYSQL_STMT_CHECK_FOR_ERRORS( m_statement, "Failed to fetch column" );
}
catch( ... ){
lw::util::safeDeleteArray( (char*&)rightSizeBinder.buffer );
rethrow_exception( current_exception() );
}
// Now convert the value to a string JSON node, clean up, and return.
json::Node node( "", string( (char*)rightSizeBinder.buffer, *rightSizeBinder.length ) );
lw::util::safeDeleteArray( (char*&)rightSizeBinder.buffer );
return node;
}
wstring ExceptionHelper::GetCurrentExceptionMessage()
{
wstring exceptionMessage;
const exception_ptr exceptionPointer = current_exception();
if(exceptionPointer == nullptr)
{
return wstring();
}
try
{
rethrow_exception(exceptionPointer);
}
catch (const SelectedTextTranslateBaseException& exception)
{
exceptionMessage = exception.GetFullErrorMessage();
}
catch (const SelectedTextTranslateBaseException* exception)
{
exceptionMessage = exception->GetFullErrorMessage();
}
catch (const exception& exception)
{
exceptionMessage = StringUtilities::Format(L"\tException message: '%hs'", exception.what());
}
catch (...)
{
exceptionMessage = L"\tUnknown exception occurred.";
}
return exceptionMessage;
}
ThreadState* VMThreadState::state_as_object(STATE) {
if(raise_reason_ == cNone && current_exception_.get()->nil_p()) return nil<ThreadState>();
ThreadState* thread_state = ThreadState::create(state);
thread_state->raise_reason(state, Fixnum::from(raise_reason_));
thread_state->destination_scope(state, destination_scope());
thread_state->throw_dest(state, throw_dest());
thread_state->current_exception(state, current_exception());
thread_state->raise_value(state, raise_value());
return thread_state;
}
void trampoline_push( intptr_t vp)
{
typedef typename Coro::param_type param_type;
BOOST_ASSERT( vp);
setup< Fn > * from(
reinterpret_cast< setup< Fn > * >( vp) );
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
Fn fn( forward< Fn >( from->fn) );
#else
Fn fn( move( from->fn) );
#endif
coroutine_context caller( * from->caller);
coroutine_context callee( * from->callee);
Coro c( & caller, & callee,
stack_unwind == from->attr.do_unwind,
fpu_preserved == from->attr.preserve_fpu);
from = 0;
{
param_type * from(
reinterpret_cast< param_type * >(
c.callee_->jump(
* c.caller_,
reinterpret_cast< intptr_t >( & c),
c.preserve_fpu() ) ) );
if ( ! from->do_unwind)
{
BOOST_ASSERT( from->data);
// create push_coroutine
typename Self::impl_type b( & callee, & caller, false, c.preserve_fpu(), from->data);
Self yield( & b);
try
{ fn( yield); }
catch ( forced_unwind const&)
{}
catch (...)
{ c.except_ = current_exception(); }
}
}
c.flags_ |= flag_complete;
param_type to;
c.callee_->jump(
* c.caller_,
reinterpret_cast< intptr_t >( & to),
c.preserve_fpu() );
BOOST_ASSERT_MSG( false, "push_coroutine is complete");
}
void CThreadPoolItemExecutorJoin::Impl::exec()
{
try
{
func();
}catch(...)
{
except=current_exception();
}
complete.signal(); //notify CThreadPool::join
}
inline exception_ptr
make_exception_ptr( E const & e )
{
try
{
throw e;
}
catch (...)
{
return current_exception();
}
}
inline
exception_ptr
copy_exception( T const & e )
{
try
{
throw enable_current_exception(e);
}
catch( ... )
{
return current_exception();
}
}
Object* ThreadState::state_as_object(STATE) {
if(raise_reason_ == cNone && current_exception_.get()->nil_p()) return cNil;
Exception* exc = Exception::create(state);
exc->klass(state, G(exc_vm_internal));
exc->set_ivar(state, state->symbol("reason"), Fixnum::from(raise_reason_));
exc->set_ivar(state, state->symbol("destination"), destination_scope());
exc->set_ivar(state, state->symbol("throw_dest"), throw_dest());
exc->set_ivar(state, state->symbol("exception"), current_exception());
exc->set_ivar(state, state->symbol("value"), raise_value());
return exc;
}
void trampoline( typename worker_fiber::coro_t::yield_type & yield)
{
BOOST_ASSERT( yield);
void * p( yield.get() );
BOOST_ASSERT( p);
setup< Fn > * from( static_cast< setup< Fn > * >( p) );
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
Fn fn_( forward< Fn >( from->fn) );
#else
Fn fn_( move( from->fn) );
#endif
worker_fiber f( & yield);
from->f = & f;
f.set_running();
f.suspend();
try
{
#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
Fn fn( forward< Fn >( fn_) );
#else
Fn fn( move( fn_) );
#endif
BOOST_ASSERT( f.is_running() );
fn();
BOOST_ASSERT( f.is_running() );
}
catch ( coro::detail::forced_unwind const&)
{
f.set_terminated();
f.release();
throw;
}
catch ( fiber_interrupted const&)
{ f.set_exception( current_exception() ); }
catch (...)
{ std::terminate(); }
f.set_terminated();
f.release();
f.suspend();
BOOST_ASSERT_MSG( false, "fiber already terminated");
}
void result::update(pool_node_ptr const& node, call_ptr const& _call)
{
{
boost::lock_guard<boost::mutex> lock(m_mutex);
if(m_ready)
return;
BOOST_ASSERT(m_id);
BOOST_ASSERT(!m_exception);
BOOST_ASSERT(m_pointers.empty());
if(_call && (_call->id() == m_id))
{
boost::swap(m_exception, _call->m_exception);
if(!m_exception)
{
try
{
boost::swap(m_pointers, _call->m_pointers);
update_param(*node, _call);
}
catch(...)
{
m_exception = current_exception();
}
}
}
else
{
m_exception = boost::make_shared<remote_error>
(remote_error::invalid_return_type, "invalid return call");
}
m_ready = true;
}
m_condition.notify_all();
}
void SessionImpl::fetch_body( const size_t length, const shared_ptr< Session > session, const function< void ( const shared_ptr< Session >, const Bytes& ) >& callback ) const
{
const auto data_ptr = asio::buffer_cast< const Byte* >( session->m_pimpl->m_request->m_pimpl->m_buffer->data( ) );
const auto data = Bytes( data_ptr, data_ptr + length );
session->m_pimpl->m_request->m_pimpl->m_buffer->consume( length );
auto& body = m_request->m_pimpl->m_body;
if ( body.empty( ) )
{
body = data;
}
else
{
body.insert( body.end( ), data.begin( ), data.end( ) );
}
try
{
callback(session, data);
}
catch ( const int status_code )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( status_code, runtime_error( m_settings->get_status_message( status_code ) ), session );
}
catch ( const regex_error& re )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 500, re, session );
}
catch ( const runtime_error& re )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 400, re, session );
}
catch ( const exception& ex )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 500, ex, session );
}
catch ( ... )
{
auto cex = current_exception( );
if ( cex not_eq nullptr )
{
try
{
rethrow_exception( cex );
}
catch ( const exception& ex )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 500, ex, session );
}
catch ( ... )
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 500, runtime_error( "Internal Server Error" ), session );
}
}
else
{
const auto error_handler = session->m_pimpl->get_error_handler();
error_handler( 500, runtime_error( "Internal Server Error" ), session );
}
}
}
inline bool uncaught_exception() noexcept(true) {return current_exception() != nullptr;}
nested_exception() : nested(current_exception()) {}
nested_exception::nested_exception()
: __ptr_(current_exception())
{
}
static exception_ptr make_error_from_current_exception()
{
return current_exception();
}
void BlockchainScanner::scanBlockData(shared_ptr<BlockDataBatch> batch)
{
//getBlock lambda
auto getBlock = [&](unsigned height)->BlockData
{
auto iter = batch->blocks_.find(height);
if (iter == batch->blocks_.end())
{
//TODO: encapsulate in try block to catch deser errors and signal pull thread
//termination before exiting scope. cant have the scan thread hanging if this
//one fails. Also update batch->end_ if we didn't go as far as that block height
//grab block file map
BlockHeader* blockheader = nullptr;
blockheader = &blockchain_->getHeaderByHeight(height);
auto filenum = blockheader->getBlockFileNum();
auto mapIter = batch->fileMaps_.find(filenum);
if (mapIter == batch->fileMaps_.end())
{
//we haven't grabbed that file map yet
auto insertPair = batch->fileMaps_.insert(
make_pair(filenum, move(blockDataLoader_.get(filenum, true))));
mapIter = insertPair.first;
}
auto filemap = mapIter->second.get();
//find block and deserialize it
try
{
BlockData bdata;
bdata.deserialize(
filemap->getPtr() + blockheader->getOffset(),
blockheader->getBlockSize(),
blockheader, false);
auto insertPair = batch->blocks_.insert(make_pair(height, move(bdata)));
iter = insertPair.first;
}
catch (...)
{
LOGERR << "unknown block deser error during scan at height #" << height;
batch->exceptionPtr_ = current_exception();
return BlockData();
}
}
return iter->second;
};
//parser lambda
auto blockDataLoop = [&](function<void(const BlockData&)> callback)
{
auto currentBlock = batch->start_;
while (currentBlock <= batch->end_)
{
BlockData&& bdata = getBlock(currentBlock);
if (!bdata.isInitialized())
return;
callback(bdata);
currentBlock += totalThreadCount_;
}
};
//txout lambda
auto txoutParser = [&](const BlockData& blockdata)->void
{
//TODO: flag isMultisig
const BlockHeader* header = blockdata.header();
//update processed height
auto topHeight = header->getBlockHeight();
batch->highestProcessedHeight_ = topHeight;
auto& txns = blockdata.getTxns();
for (unsigned i = 0; i < txns.size(); i++)
{
const BCTX& txn = *(txns[i].get());
for (unsigned y = 0; y < txn.txouts_.size(); y++)
{
auto& txout = txn.txouts_[y];
BinaryRefReader brr(
txn.data_ + txout.first, txout.second);
brr.advance(8);
unsigned scriptSize = (unsigned)brr.get_var_int();
auto&& scrAddr = BtcUtils::getTxOutScrAddr(
brr.get_BinaryDataRef(scriptSize));
if (!scrAddrFilter_->hasScrAddress(scrAddr))
continue;
//if we got this far, this txout is ours
//get tx hash
auto& txHash = txn.getHash();
//construct StoredTxOut
StoredTxOut stxo;
stxo.dataCopy_ = BinaryData(
txn.data_ + txout.first, txout.second);
stxo.parentHash_ = txHash;
stxo.blockHeight_ = header->getBlockHeight();
stxo.duplicateID_ = header->getDuplicateID();
stxo.txIndex_ = i;
stxo.txOutIndex_ = y;
stxo.scrAddr_ = scrAddr;
stxo.spentness_ = TXOUT_UNSPENT;
stxo.parentTxOutCount_ = txn.txouts_.size();
stxo.isCoinbase_ = txn.isCoinbase_;
auto value = stxo.getValue();
auto&& hgtx = DBUtils::heightAndDupToHgtx(
stxo.blockHeight_, stxo.duplicateID_);
auto&& txioKey = DBUtils::getBlkDataKeyNoPrefix(
stxo.blockHeight_, stxo.duplicateID_,
i, y);
//update utxos_
auto& stxoHashMap = batch->utxos_[txHash];
stxoHashMap.insert(make_pair(y, move(stxo)));
//update ssh_
auto& ssh = batch->ssh_[scrAddr];
auto& subssh = ssh.subHistMap_[hgtx];
//deal with txio count in subssh at serialization
TxIOPair txio;
txio.setValue(value);
txio.setTxOut(txioKey);
txio.setFromCoinbase(txn.isCoinbase_);
subssh.txioMap_.insert(make_pair(txioKey, move(txio)));
}
}
};
//txin lambda
auto txinParser = [&](const BlockData& blockdata)->void
{
const BlockHeader* header = blockdata.header();
auto& txns = blockdata.getTxns();
for (unsigned i = 0; i < txns.size(); i++)
{
const BCTX& txn = *(txns[i].get());
for (unsigned y = 0; y < txn.txins_.size(); y++)
{
auto& txin = txn.txins_[y];
BinaryDataRef outHash(
txn.data_ + txin.first, 32);
auto utxoIter = utxoMap_.find(outHash);
if (utxoIter == utxoMap_.end())
continue;
unsigned txOutId = READ_UINT32_LE(
txn.data_ + txin.first + 32);
auto idIter = utxoIter->second.find(txOutId);
if (idIter == utxoIter->second.end())
continue;
//if we got this far, this txins consumes one of our utxos
//create spent txout
auto&& hgtx = DBUtils::getBlkDataKeyNoPrefix(
header->getBlockHeight(), header->getDuplicateID());
auto&& txinkey = DBUtils::getBlkDataKeyNoPrefix(
header->getBlockHeight(), header->getDuplicateID(),
i, y);
StoredTxOut stxo = idIter->second;
stxo.spentness_ = TXOUT_SPENT;
stxo.spentByTxInKey_ = txinkey;
//if this tx's hash was never pulled, let's add it to the stxo's
//parent hash, in order to keep track of this tx in the hint db
if (txn.txHash_.getSize() == 0)
stxo.parentHash_ = move(txn.getHash());
//add to ssh_
auto& ssh = batch->ssh_[stxo.getScrAddress()];
auto& subssh = ssh.subHistMap_[hgtx];
//deal with txio count in subssh at serialization
TxIOPair txio;
auto&& txoutkey = stxo.getDBKey(false);
txio.setTxOut(txoutkey);
txio.setTxIn(txinkey);
txio.setValue(stxo.getValue());
subssh.txioMap_[txoutkey] = move(txio);
//add to spentTxOuts_
batch->spentTxOuts_.push_back(move(stxo));
}
}
};
//txout loop
blockDataLoop(txoutParser);
//done with txouts, fill the future flag and wait on the mutex
//to move to txins processing
batch->flagUtxoScanDone();
unique_lock<mutex> txinLock(batch->parseTxinMutex_);
//txins loop
blockDataLoop(txinParser);
}
inline exception_ptr copy_exception( T&& e ) {
try { throw e; } catch (...) { return current_exception(); }
return exception_ptr();
}
void SessionImpl::parse_request( const asio::error_code& error, const shared_ptr< Session > session, const function< void ( const shared_ptr< Session > ) >& callback )
try
{
if ( error )
{
throw runtime_error( error.message( ) );
}
istream stream( m_buffer.get( ) );
const auto items = parse_request_line( stream );
const auto uri = Uri::parse( "http://localhost" + items.at( "path" ) );
m_request = make_shared< Request >( );
m_request->m_pimpl->m_path = Uri::decode( uri.get_path( ) );
m_request->m_pimpl->m_method = items.at( "method" );
m_request->m_pimpl->m_version = stod( items.at( "version" ) );
m_request->m_pimpl->m_headers = parse_request_headers( stream );
m_request->m_pimpl->m_query_parameters = uri.get_query_parameters( );
callback( session );
}
catch ( const int status_code )
{
runtime_error re( m_settings->get_status_message( status_code ) );
failure( session, status_code, re );
}
catch ( const regex_error& re )
{
failure( session, 500, re );
}
catch ( const runtime_error& re )
{
failure( session, 400, re );
}
catch ( const exception& ex )
{
failure( session, 500, ex );
}
catch ( ... )
{
auto cex = current_exception( );
if ( cex not_eq nullptr )
{
try
{
rethrow_exception( cex );
}
catch ( const exception& ex )
{
failure( session, 500, ex );
}
catch ( ... )
{
runtime_error re( "Internal Server Error" );
failure( session, 500, re );
}
}
else
{
runtime_error re( "Internal Server Error" );
failure( session, 500, re );
}
}
void BitcoinP2P::connectLoop(void)
{
size_t waitBeforeReconnect = 0;
promise<bool> shutdownPromise;
shutdownFuture_ = shutdownPromise.get_future();
while (run_.load(memory_order_relaxed))
{
//clean up stacks
dataStack_ = make_shared<BlockingStack<vector<uint8_t>>>();
verackPromise_ = make_unique<promise<bool>>();
auto verackFuture = verackPromise_->get_future();
while (run_.load(memory_order_relaxed))
{
if (binSocket_.openSocket(false))
break;
if (waitBeforeReconnect < 5000)
waitBeforeReconnect += RECONNECT_INCREMENT_MS;
this_thread::sleep_for(chrono::milliseconds(waitBeforeReconnect));
}
auto processThread = [this](void)->void
{
try
{
this->processDataStackThread();
}
catch (...)
{
this->process_except_ = current_exception();
}
};
pollSocketThread();
thread processThr(processThread);
//send version payload
Payload_Version version;
auto timestamp = getTimeStamp();
struct sockaddr clientsocketaddr;
try
{
//send version
if (binSocket_.getSocketName(clientsocketaddr) != 0)
throw SocketError("failed to get client sockaddr");
if (binSocket_.getPeerName(node_addr_) != 0)
throw SocketError("failed to get peer sockaddr");
// Services, for future extensibility
uint32_t services = NODE_WITNESS;
version.setVersionHeaderIPv4(70012, services, timestamp,
node_addr_, clientsocketaddr);
version.userAgent_ = "Armory:0.95";
version.startHeight_ = -1;
sendMessage(move(version));
//wait on verack
verackFuture.get();
verackPromise_.reset();
LOGINFO << "Connected to Bitcoin node";
//signal calling thread
connectedPromise_->set_value(true);
waitBeforeReconnect = 0;
}
catch (...)
{
waitBeforeReconnect += RECONNECT_INCREMENT_MS;
this_thread::sleep_for(chrono::milliseconds(waitBeforeReconnect));
}
//wait on threads
if (processThr.joinable())
processThr.join();
//close socket to guarantee select returns
if (binSocket_.isValid())
binSocket_.closeSocket();
LOGINFO << "Disconnected from Bitcoin node";
}
shutdownPromise.set_value(true);
}
void BlockDataManagerConfig::parseArgs(int argc, char* argv[])
{
/***
--testnet: run db against testnet bitcoin network
--regtest: run db against regression test network
--rescan: delete all processed history data and rescan blockchain from the
first block
--rebuild: delete all DB data and build and scan from scratch
--rescanSSH: delete balance and txcount data and rescan it. Much faster than
rescan or rebuild.
--datadir: path to the operation folder
--dbdir: path to folder containing the database files. If empty, a new db
will be created there
--satoshi-datadir: path to blockchain data folder (blkXXXXX.dat files)
--ram_usage: defines the ram use during scan operations. 1 level averages
128MB of ram (without accounting the base amount, ~400MB). Defaults at 4.
Can't be lower than 1. Can be changed in between processes
--thread-count: defines how many processing threads can be used during db
builds and scans. Defaults to maximum available CPU threads. Can't be
lower than 1. Can be changed in between processes
--zcthread-count: defines the maximum number on threads the zc parser can
create for processing incoming transcations from the network node
--db-type: sets the db type:
DB_BARE: tracks wallet history only. Smallest DB.
DB_FULL: tracks wallet history and resolves all relevant tx hashes.
~750MB DB at the time of 0.95 release. Default DB type.
DB_SUPER: tracks all blockchain history. XXL DB (100GB+).
Not implemented yet
db type cannot be changed in between processes. Once a db has been built
with a certain type, it will always function according to that type.
Specifying another type will do nothing. Build a new db to change type.
--cookie: create a cookie file holding a random authentication key to allow
local clients to make use of elevated commands, like shutdown.
--fcgi-port: sets the DB listening port.
--clear-mempool: delete all zero confirmation transactions from the DB.
***/
try
{
//parse cli args
map<string, string> args;
for (int i = 1; i < argc; i++)
{
//check prefix
if (strlen(argv[i]) < 2)
throw DbErrorMsg("invalid CLI arg");
string prefix(argv[i], 2);
if (prefix != "--")
throw DbErrorMsg("invalid CLI arg");
//string prefix and tokenize
string line(argv[i] + 2);
auto&& argkeyval = getKeyValFromLine(line, '=');
args.insert(make_pair(
argkeyval.first, stripQuotes(argkeyval.second)));
}
processArgs(args, true);
//figure out datadir
auto argIter = args.find("datadir");
if (argIter != args.end())
{
dataDir_ = argIter->second;
args.erase(argIter);
}
else
{
if (!testnet_ && !regtest_)
dataDir_ = defaultDataDir_;
else if (!regtest_)
dataDir_ = defaultTestnetDataDir_;
else
dataDir_ = defaultRegtestDataDir_;
}
expandPath(dataDir_);
//get datadir
auto configPath = dataDir_;
appendPath(configPath, "armorydb.conf");
if (DBUtils::fileExists(configPath, 2))
{
ConfigFile cf(configPath);
auto mapIter = cf.keyvalMap_.find("datadir");
if (mapIter != cf.keyvalMap_.end())
throw DbErrorMsg("datadir is illegal in .conf file");
processArgs(cf.keyvalMap_, false);
}
processArgs(args, false);
//figure out defaults
bool autoDbDir = false;
if (dbDir_.size() == 0)
{
dbDir_ = dataDir_;
appendPath(dbDir_, dbDirExtention_);
autoDbDir = true;
}
if (blkFileLocation_.size() == 0)
{
if (!testnet_)
blkFileLocation_ = defaultBlkFileLocation_;
else
blkFileLocation_ = defaultTestnetBlkFileLocation_;
}
//expand paths if necessary
expandPath(dbDir_);
expandPath(blkFileLocation_);
if (blkFileLocation_.size() < 6 ||
blkFileLocation_.substr(blkFileLocation_.length() - 6, 6) != "blocks")
{
appendPath(blkFileLocation_, "blocks");
}
logFilePath_ = dataDir_;
appendPath(logFilePath_, "dbLog.txt");
//test all paths
auto testPath = [](const string& path, int mode)
{
if (!DBUtils::fileExists(path, mode))
{
stringstream ss;
ss << path << " is not a valid path";
cout << ss.str() << endl;
throw DbErrorMsg(ss.str());
}
};
testPath(dataDir_, 6);
//create dbdir if was set automatically
if (autoDbDir)
{
try
{
testPath(dbDir_, 0);
}
catch (DbErrorMsg&)
{
#ifdef _WIN32
CreateDirectory(dbDir_.c_str(), NULL);
#else
mkdir(dbDir_.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
#endif
}
}
//now for the regular test, let it throw if it fails
testPath(dbDir_, 6);
testPath(blkFileLocation_, 2);
//fcgi port
if (useCookie_ && !customFcgiPort_)
{
//no custom fcgi port was provided and the db was spawned with a
//cookie file, fcgi port will be randomized
srand(time(0));
while (1)
{
auto port = rand() % 15000 + 49150;
stringstream portss;
portss << port;
if (!testConnection("127.0.0.1", portss.str()))
{
fcgiPort_ = portss.str();
break;
}
}
}
}
catch (...)
{
exceptionPtr_ = current_exception();
}
}
