/**
* Process all fees and update the asset records.
*/
void transaction_evaluation_state::post_evaluate()
{ try {
required_fees += asset(_current_state->calculate_data_fee(fc::raw::pack_size(trx)),0);
for( auto fee : balance )
{
if( fee.second < 0 ) FC_CAPTURE_AND_THROW( negative_fee, (fee) );
if( fee.second > 0 )
{
if( fee.first == 0 && fee.second < required_fees.amount )
FC_CAPTURE_AND_THROW( insufficient_fee, (fee)(required_fees.amount) );
auto asset_record = _current_state->get_asset_record( fee.first );
if( !asset_record )
FC_CAPTURE_AND_THROW( unknown_asset_id, (fee.first) );
asset_record->collected_fees += fee.second;
asset_record->current_share_supply -= fee.second;
_current_state->store_asset_record( *asset_record );
}
}
for( auto required_deposit : required_deposits )
{
auto provided_itr = provided_deposits.find( required_deposit.first );
if( provided_itr->second < required_deposit.second )
FC_CAPTURE_AND_THROW( missing_deposit, (required_deposit) );
}
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
/**
* A price will reorder the asset types such that the
* asset type with the lower enum value is always the
* denominator. Therefore bts/usd and usd/bts will
* always result in a price measured in usd/bts because
* asset::bts < asset::usd.
*/
price operator / ( const asset& a, const asset& b )
{
try
{
if( a.asset_id == b.asset_id )
FC_CAPTURE_AND_THROW( asset_divide_by_self );
price p;
auto l = a; auto r = b;
if( l.asset_id < r.asset_id ) { std::swap(l,r); }
ilog( "${a} / ${b}", ("a",l)("b",r) );
if( r.amount == 0 )
FC_CAPTURE_AND_THROW( asset_divide_by_zero, (r) );
p.base_asset_id = r.asset_id;
p.quote_asset_id = l.asset_id;
fc::bigint bl = l.amount;
fc::bigint br = r.amount;
fc::bigint result = (bl * fc::bigint(BTS_PRICE_PRECISION)) / br;
p.ratio = result;
return p;
} FC_RETHROW_EXCEPTIONS( warn, "${a} / ${b}", ("a",a)("b",b) );
}
void fire_delegate_operation::evaluate( transaction_evaluation_state& eval_state )
{ try {
auto delegate_record = eval_state._current_state->get_account_record( this->delegate_id );
if( !delegate_record ) FC_CAPTURE_AND_THROW( unknown_account_id, (delegate_id) );
if( !delegate_record->is_delegate() ) FC_CAPTURE_AND_THROW( not_a_delegate, (delegate_record) );
switch( (fire_delegate_operation::reason_type)this->reason )
{
case fire_delegate_operation::multiple_blocks_signed:
{
auto proof = fc::raw::unpack<multiple_block_proof>( this->data );
FC_ASSERT( proof.first.id() != proof.second.id() );
FC_ASSERT( proof.first.timestamp == proof.second.timestamp )
FC_ASSERT( proof.first.signee() == proof.second.signee() )
FC_ASSERT( proof.first.validate_signee( delegate_record->active_key() ) );
// then fire the delegate
// this maintains the invariant of total votes == total shares
delegate_record->adjust_votes_against( delegate_record->votes_for() );
delegate_record->adjust_votes_for( -delegate_record->votes_for() );
eval_state._current_state->store_account_record( *delegate_record );
break;
}
case fire_delegate_operation::invalid_testimony:
{
auto testimony = fc::raw::unpack<signed_delegate_testimony>( this->data );
bool is_delegates_key = false;
auto signee = testimony.signee();
for( auto key : delegate_record->active_key_history )
{
if( signee == key.second )
{
is_delegates_key = true;
break;
}
}
if( !is_delegates_key ) FC_CAPTURE_AND_THROW( not_a_delegate_signature, (signee)(delegate_record) );
auto trx_loc = eval_state._current_state->get_transaction( testimony.transaction_id );
// delegate said it was valid, but it is invalid
if( !trx_loc && testimony.valid )
{
delegate_record->adjust_votes_against( delegate_record->votes_for() );
delegate_record->adjust_votes_for( -delegate_record->votes_for() );
eval_state._current_state->store_account_record( *delegate_record );
}
else
{
FC_CAPTURE_AND_THROW( invalid_fire_operation );
}
break;
}
}
} FC_CAPTURE_AND_RETHROW( (*this) ) }
double chain_interface::to_pretty_price_double( const price& price_to_pretty_print )const
{
auto obase_asset = get_asset_record( price_to_pretty_print.base_asset_id );
if( !obase_asset ) FC_CAPTURE_AND_THROW( unknown_asset_id, (price_to_pretty_print.base_asset_id) );
auto oquote_asset = get_asset_record( price_to_pretty_print.quote_asset_id );
if( !oquote_asset ) FC_CAPTURE_AND_THROW( unknown_asset_id, (price_to_pretty_print.quote_asset_id) );
return fc::variant(string(price_to_pretty_print.ratio * obase_asset->get_precision() / oquote_asset->get_precision())).as_double() / (BTS_BLOCKCHAIN_MAX_SHARES*1000);
}
/**
* Process all fees and update the asset records.
*/
void transaction_evaluation_state::post_evaluate()
{ try {
for( const auto& item : withdraws )
{
auto asset_rec = _current_state->get_asset_record( item.first );
if( !asset_rec.valid() ) FC_CAPTURE_AND_THROW( unknown_asset_id, (item) );
if( asset_rec->id > 0 && asset_rec->is_market_issued() && asset_rec->transaction_fee > 0 )
{
sub_balance( address(), asset(asset_rec->transaction_fee, asset_rec->id) );
}
}
balance[0]; // make sure we have something for this.
for( const auto& fee : balance )
{
if( fee.second < 0 ) FC_CAPTURE_AND_THROW( negative_fee, (fee) );
// if the fee is already in XTS or the fee balance is zero, move along...
if( fee.first == 0 || fee.second == 0 )
continue;
auto asset_record = _current_state->get_asset_record( fee.first );
if( !asset_record.valid() ) FC_CAPTURE_AND_THROW( unknown_asset_id, (fee.first) );
if( !asset_record->is_market_issued() )
continue;
// lowest ask is someone with XTS offered at a price of USD / XTS, fee.first
// is an amount of USD which can be converted to price*USD XTS provided we
// send lowest_ask.index.owner the USD
oprice median_price = _current_state->get_median_delegate_price( fee.first, asset_id_type( 0 ) );
if( median_price )
{
// fees paid in something other than XTS are discounted 50%
alt_fees_paid += asset( (fee.second*2)/3, fee.first ) * *median_price;
}
}
for( const auto& fee : balance )
{
if( fee.second < 0 ) FC_CAPTURE_AND_THROW( negative_fee, (fee) );
if( fee.second > 0 ) // if a fee was paid...
{
auto asset_record = _current_state->get_asset_record( fee.first );
if( !asset_record )
FC_CAPTURE_AND_THROW( unknown_asset_id, (fee.first) );
asset_record->collected_fees += fee.second;
_current_state->store_asset_record( *asset_record );
}
}
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
/**
* Process all fees and update the asset records.
*/
void transaction_evaluation_state::post_evaluate()
{ try {
// Should this be here? We may not have fees in XTS now...
balance[0]; // make sure we have something for this.
for( const auto& fee : balance )
{
if( fee.second < 0 ) FC_CAPTURE_AND_THROW( negative_fee, (fee) );
// if the fee is already in XTS or the fee balance is zero, move along...
if( fee.first == 0 || fee.second == 0 )
continue;
auto asset_record = _current_state->get_asset_record( fee.first );
if( !asset_record.valid() ) FC_CAPTURE_AND_THROW( unknown_asset_id, (fee.first) );
if( !asset_record->is_market_issued() )
continue;
// lowest ask is someone with XTS offered at a price of USD / XTS, fee.first
// is an amount of USD which can be converted to price*USD XTS provided we
// send lowest_ask.index.owner the USD
oprice median_price = _current_state->get_median_delegate_price( fee.first );
if( median_price )
{
// fees paid in something other than XTS are discounted 50%
alt_fees_paid += asset( (fee.second*2)/3, fee.first ) * *median_price;
}
}
for( const auto& fee : balance )
{
if( fee.second < 0 ) FC_CAPTURE_AND_THROW( negative_fee, (fee) );
if( fee.second > 0 ) // if a fee was paid...
{
auto asset_record = _current_state->get_asset_record( fee.first );
if( !asset_record )
FC_CAPTURE_AND_THROW( unknown_asset_id, (fee.first) );
asset_record->collected_fees += fee.second;
_current_state->store_asset_record( *asset_record );
}
}
for( const auto& required_deposit : required_deposits )
{
auto provided_itr = provided_deposits.find( required_deposit.first );
if( provided_itr->second < required_deposit.second )
FC_CAPTURE_AND_THROW( missing_deposit, (required_deposit) );
}
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
void transaction_evaluation_state::evaluate( const signed_transaction& trx_arg, bool skip_signature_check, bool enforce_canonical )
{ try {
_skip_signature_check = skip_signature_check;
try {
if( _current_state->now() >= trx_arg.expiration )
{
if( _current_state->now() > trx_arg.expiration || _current_state->get_head_block_num() >= BTS_V0_4_21_FORK_BLOCK_NUM )
{
const auto expired_by_sec = (_current_state->now() - trx_arg.expiration).to_seconds();
FC_CAPTURE_AND_THROW( expired_transaction, (trx_arg)(_current_state->now())(expired_by_sec) );
}
}
if( (_current_state->now() + BTS_BLOCKCHAIN_MAX_TRANSACTION_EXPIRATION_SEC) < trx_arg.expiration )
FC_CAPTURE_AND_THROW( invalid_transaction_expiration, (trx_arg)(_current_state->now()) );
auto trx_id = trx_arg.id();
if( _current_state->is_known_transaction( trx_arg.expiration, trx_arg.digest( _chain_id ) ) )
if (_current_state->get_head_block_num() >= FORK_25)
FC_CAPTURE_AND_THROW( duplicate_transaction, (trx_id) );
trx = trx_arg;
if( !_skip_signature_check )
{
auto digest = trx_arg.digest( _chain_id );
for( const auto& sig : trx.signatures )
{
auto key = fc::ecc::public_key( sig, digest, enforce_canonical ).serialize();
signed_keys.insert( address(key) );
signed_keys.insert( address(pts_address(key,false,56) ) );
signed_keys.insert( address(pts_address(key,true,56) ) );
signed_keys.insert( address(pts_address(key,false,0) ) );
signed_keys.insert( address(pts_address(key,true,0) ) );
}
}
current_op_index = 0;
for( const auto& op : trx.operations )
{
evaluate_operation( op );
++current_op_index;
}
post_evaluate();
validate_required_fee();
update_delegate_votes();
}
catch ( const fc::exception& e )
{
validation_error = e;
throw;
}
} FC_RETHROW_EXCEPTIONS( warn, "", ("trx",trx_arg) ) }
void transaction_evaluation_state::evaluate( const signed_transaction& trx_arg, bool skip_signature_check )
{ try {
reset();
_skip_signature_check = skip_signature_check;
try {
if( trx_arg.expiration < _current_state->now() )
{
auto expired_by_sec = (trx_arg.expiration - _current_state->now()).to_seconds();
FC_CAPTURE_AND_THROW( expired_transaction, (trx_arg)(_current_state->now())(expired_by_sec) );
}
if( trx_arg.expiration > (_current_state->now() + BTS_BLOCKCHAIN_MAX_TRANSACTION_EXPIRATION_SEC) )
FC_CAPTURE_AND_THROW( invalid_transaction_expiration, (trx_arg)(_current_state->now()) );
auto trx_size = fc::raw::pack_size(trx_arg);
if( trx_size > BTS_BLOCKCHAIN_MAX_TRANSACTION_SIZE )
FC_CAPTURE_AND_THROW( oversized_transaction, (trx_size ) );
auto trx_id = trx_arg.id();
if( _current_state->is_known_transaction( trx_id ) )
FC_CAPTURE_AND_THROW( duplicate_transaction, (trx_id) );
trx = trx_arg;
if( !_skip_signature_check )
{
auto digest = trx_arg.digest( _chain_id );
for( auto sig : trx.signatures )
{
auto key = fc::ecc::public_key( sig, digest ).serialize();
signed_keys.insert( address(key) );
signed_keys.insert( address(pts_address(key,false,56) ) );
signed_keys.insert( address(pts_address(key,true,56) ) );
signed_keys.insert( address(pts_address(key,false,0) ) );
signed_keys.insert( address(pts_address(key,true,0) ) );
}
}
for( auto op : trx.operations )
{
evaluate_operation( op );
}
post_evaluate();
validate_required_fee();
update_delegate_votes();
}
catch ( const fc::exception& e )
{
validation_error = e;
throw;
}
} FC_RETHROW_EXCEPTIONS( warn, "", ("trx",trx_arg) ) }
string chain_interface::to_pretty_price( const price& price_to_pretty_print )const
{ try {
auto obase_asset = get_asset_record( price_to_pretty_print.base_asset_id );
if( !obase_asset ) FC_CAPTURE_AND_THROW( unknown_asset_id, (price_to_pretty_print.base_asset_id) );
auto oquote_asset = get_asset_record( price_to_pretty_print.quote_asset_id );
if( !oquote_asset ) FC_CAPTURE_AND_THROW( unknown_asset_id, (price_to_pretty_print.quote_asset_id) );
auto tmp = price_to_pretty_print;
tmp.ratio *= obase_asset->get_precision();
tmp.ratio /= oquote_asset->get_precision();
return tmp.ratio_string() + " " + oquote_asset->symbol + " / " + obase_asset->symbol;
} FC_CAPTURE_AND_RETHROW( (price_to_pretty_print) ) }
Value fetch( const Key& key )const
{ try {
const auto itr = _cache.find( key );
if( itr != _cache.end() )
return itr->second;
FC_CAPTURE_AND_THROW( fc::key_not_found_exception, (key) );
} FC_CAPTURE_AND_RETHROW( (key) ) }
asset chain_interface::to_ugly_asset(const std::string& amount, const std::string& symbol) const
{ try {
auto record = get_asset_record( symbol );
if( !record ) FC_CAPTURE_AND_THROW( unknown_asset_symbol, (symbol) );
auto decimal = amount.find(".");
if( decimal == string::npos )
return asset(atoll(amount.c_str()) * record->precision, record->id);
share_type whole = atoll(amount.substr(0, decimal).c_str()) * record->precision;
string fraction_string = amount.substr(decimal+1);
share_type fraction = atoll(fraction_string.c_str());
if( fraction_string.empty() || fraction <= 0 )
return asset(whole, record->id);
while( fraction < record->precision )
fraction *= 10;
while( fraction > record->precision )
fraction /= 10;
while( fraction_string.size() && fraction_string[0] == '0')
{
fraction /= 10;
fraction_string.erase(0, 1);
}
return asset(whole > 0? whole + fraction : whole - fraction, record->id);
} FC_CAPTURE_AND_RETHROW( (amount)(symbol) ) }
void validate_market(asset_id_type quote, asset_id_type base)
{
if( quote < base )
{
// force user to submit an ask rather than a bid
FC_CAPTURE_AND_THROW( invalid_market, (quote)(base) );
}
}
void ad_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
if( this->amount.amount <= 0 )
FC_CAPTURE_AND_THROW( negative_deposit, (amount) );
FC_ASSERT( !message.empty() );
FC_ASSERT( amount.asset_id == 0 );
const size_t message_kb = (message.size() / 1024) + 1;
const share_type required_fee = message_kb * BTS_BLOCKCHAIN_MIN_AD_FEE;
FC_ASSERT( amount.amount >= required_fee, "Message of size ${s} KiB requires at least ${a} satoshis to be pay!",
("s",message_kb)("a",required_fee) );
// half of the note fees goto collected fees(delegate pay), other go to ad owner
eval_state.min_fees[amount.asset_id] += required_fee;
FC_ASSERT( owner_account_id != 0 );
const oaccount_record owner_account_rec = eval_state.pending_state()->get_account_record( abs( this->owner_account_id ) );
FC_ASSERT( owner_account_rec.valid() );
auto owner_address = owner_account_rec->active_address();
auto ad_income_balance = eval_state.pending_state()->get_balance_record(withdraw_condition( withdraw_with_signature(owner_address), 0 ).get_address());
if( !ad_income_balance )
ad_income_balance = balance_record( owner_address, asset(0, 0), 0 );
auto ad_pay = amount.amount - required_fee;
ad_income_balance->balance += ad_pay;
ad_income_balance->last_update = eval_state.pending_state()->now();
ad_income_balance->deposit_date = eval_state.pending_state()->now();
eval_state.pending_state()->store_balance_record( *ad_income_balance );
eval_state.sub_balance( asset(ad_pay, amount.asset_id) );
// checking the signature of the publisher.
FC_ASSERT( publisher_account_id != 0 );
const oaccount_record publisher_account_rec = eval_state.pending_state()->get_account_record( abs( this->publisher_account_id ) );
FC_ASSERT( publisher_account_rec.valid() );
eval_state.check_signature( publisher_account_rec->active_key() );
ad_record record;
record.index.account_id = owner_account_id;
record.index.transaction_id = eval_state.trx.id();
record.publisher_id = publisher_account_id;
record.amount = amount;
record.message = message;
record.signer = message_signature;
// the message must be signed by the claimed publisher account
FC_ASSERT( publisher_account_rec->active_key() == record.signer_key() );
FC_ASSERT( !eval_state.pending_state()->get_ad_record( record.index ).valid() );
eval_state.pending_state()->store_ad_record( std::move( record ) );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void transaction_evaluation_state::validate_required_fee()
{ try {
share_type required_fee = _current_state->calculate_data_fee( trx.data_size() );
auto fee_itr = balance.find( 0 );
if( fee_itr == balance.end() ||
fee_itr->second < required_fee )
{
FC_CAPTURE_AND_THROW( insufficient_fee, (required_fee) );
}
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
void peer_connection::read_loop()
{
ilog( "read loop" );
try
{
auto one_time_key = fc::ecc::private_key::generate();
fc::ecc::public_key pub = one_time_key.get_public_key();
auto s = pub.serialize();
_socket.write( (char*)&s, sizeof(s) );
fc::ecc::public_key_data remote_one_time_key;
_socket.read( (char*)&remote_one_time_key, sizeof(remote_one_time_key) );
_shared_secret = one_time_key.get_shared_secret( remote_one_time_key );
elog( "${ss}", ("ss",_shared_secret) );
if( _send_queue.size() && !_send_queue_complete.valid() )
_send_queue_complete = fc::async( [=](){ process_send_queue(); } );
message next_message;
next_message.data.resize( BTS_NETWORK_MAX_MESSAGE_SIZE );
while( !_read_loop.canceled() )
{
// read a message
_socket.read( (char*)&next_message.size, sizeof(next_message.size) );
wlog( " read message of size ${s} ", ("s", next_message.size) );
if( next_message.size > BTS_NETWORK_MAX_MESSAGE_SIZE )
{
send_message( goodbye_message( message_too_large() ) );
_socket.close();
FC_CAPTURE_AND_THROW( message_too_large, (next_message.size) );
}
_socket.read( (char*)&next_message.type, sizeof(next_message.type) );
wlog( " read message of size ${s} type ${t}", ("s", next_message.size)("t",int(next_message.type)) );
_socket.read( next_message.data.data(), next_message.size );
wlog( "read body of message" );
received_message( shared_from_this(), next_message );
}
}
catch ( const fc::exception& e )
{
ilog( "closed: ${e}", ("e", e.to_detail_string()) );
connection_closed( shared_from_this(), e );
return;
}
ilog( "closed!" );
connection_closed( shared_from_this(), optional<fc::exception>() );
}
void transaction_evaluation_state::adjust_vote( slate_id_type slate_id, share_type amount )
{
if( slate_id )
{
auto slate = _current_state->get_delegate_slate( slate_id );
if( !slate ) FC_CAPTURE_AND_THROW( unknown_delegate_slate, (slate_id) );
for( auto delegate_id : slate->supported_delegates )
{
net_delegate_votes[delegate_id].votes_for += amount;
}
}
}
void transaction_evaluation_state::validate_required_fee()
{ try {
asset xts_fees;
auto fee_itr = balance.find( 0 );
if( fee_itr != balance.end() ) xts_fees += asset( fee_itr->second, 0);
xts_fees += alt_fees_paid;
if( required_fees > xts_fees )
{
FC_CAPTURE_AND_THROW( insufficient_fee, (required_fees)(alt_fees_paid)(xts_fees) );
}
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
void add_collateral_operation::evaluate( transaction_evaluation_state& eval_state )
{
FC_ASSERT(!"Not implemented for this DAC.\n");
if( this->cover_index.order_price == price() )
FC_CAPTURE_AND_THROW( zero_price, (cover_index.order_price) );
if( this->amount == 0 )
FC_CAPTURE_AND_THROW( zero_amount );
if( this->amount < 0 )
FC_CAPTURE_AND_THROW( negative_deposit );
asset delta_amount = this->get_amount();
eval_state.sub_balance( address(), delta_amount );
// update collateral and call price
auto current_cover = eval_state._current_state->get_collateral_record( this->cover_index );
if( NOT current_cover )
FC_CAPTURE_AND_THROW( unknown_market_order, (cover_index) );
current_cover->collateral_balance += delta_amount.amount;
// changing the payoff balance changes the call price... so we need to remove the old record
// and insert a new one.
eval_state._current_state->store_collateral_record( this->cover_index, collateral_record() );
auto new_call_price = asset(current_cover->payoff_balance, delta_amount.asset_id) /
asset((current_cover->collateral_balance*3)/4, 0);
eval_state._current_state->store_collateral_record( market_index_key( new_call_price, this->cover_index.owner),
*current_cover );
auto market_stat = eval_state._current_state->get_market_status( cover_index.order_price.quote_asset_id, cover_index.order_price.base_asset_id );
FC_ASSERT( market_stat, "this should be valid for there to even be a position to cover" );
market_stat->ask_depth += delta_amount.amount;
eval_state._current_state->store_market_status( *market_stat );
}
void transaction_evaluation_state::evaluate( const signed_transaction& trx_arg )
{ try {
reset();
try {
if( trx_arg.expiration && *trx_arg.expiration < _current_state->now() )
FC_CAPTURE_AND_THROW( expired_transaction, (trx_arg)(_current_state->now()) );
auto trx_id = trx_arg.id();
ilog( "id: ${id}", ("id",trx_id) );
otransaction_record known_transaction= _current_state->get_transaction( trx_id );
if( known_transaction )
FC_CAPTURE_AND_THROW( duplicate_transaction, (known_transaction) );
trx = trx_arg;
auto digest = trx_arg.digest( _chain_id );
for( auto sig : trx.signatures )
{
auto key = fc::ecc::public_key( sig, digest ).serialize();
signed_keys.insert( address(key) );
signed_keys.insert( address(pts_address(key,false,56) ) );
signed_keys.insert( address(pts_address(key,true,56) ) );
signed_keys.insert( address(pts_address(key,false,0) ) );
signed_keys.insert( address(pts_address(key,true,0) ) );
}
for( auto op : trx.operations )
{
evaluate_operation( op );
}
post_evaluate();
validate_required_fee();
update_delegate_votes();
}
catch ( const fc::exception& e )
{
validation_error = e;
throw;
}
} FC_RETHROW_EXCEPTIONS( warn, "", ("trx",trx_arg) ) }
void note_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
#ifndef WIN32
#warning [HARDFORK] Remove this check after PLS_V0_1_0_FORK_BLOCK_NUM has passed
#endif
FC_ASSERT( eval_state.pending_state()->get_head_block_num() >= PLS_V0_1_0_FORK_BLOCK_NUM );
if( this->amount.amount <= 0 )
FC_CAPTURE_AND_THROW( negative_deposit, (amount) );
FC_ASSERT( !message->data.empty() );
FC_ASSERT( amount.asset_id == 0 );
const size_t message_kb = (message->data.size() / 1024) + 1;
const share_type required_fee = message_kb * BTS_BLOCKCHAIN_MIN_NOTE_FEE;
FC_ASSERT( amount.amount >= required_fee, "Message of size ${s} KiB requires at least ${a} satoshis to be burned!",
("s",message_kb)("a",required_fee) );
// 30% of the note fees goto collected fees(delegate pay), other go to the operation pool
eval_state.min_fees[amount.asset_id] += amount.amount * 3 / 10;
// TODO: instead of burn, the left will go to a fee pool attached to this operation.
auto op_reward_record = eval_state.pending_state()->get_operation_reward_record(note_op_type);
auto reward_fee = amount.amount - amount.amount * 3 / 10;
op_reward_record->fees[amount.asset_id] += reward_fee;
eval_state.sub_balance( asset(reward_fee, amount.asset_id) );
eval_state.pending_state()->store_operation_reward_record( *op_reward_record );
// the transaction check the signature of the owner
const oaccount_record account_rec = eval_state.pending_state()->get_account_record( abs( this->owner_account_id ) );
FC_ASSERT( account_rec.valid() );
eval_state.check_signature( account_rec->active_key() );
note_record record;
record.index.account_id = owner_account_id;
record.index.transaction_id = eval_state.trx.id();
record.amount = amount;
record.message = message;
record.signer = message_signature;
// verify the signature of the message, the message signer must be the account_id's active key
FC_ASSERT( account_rec->active_key() == record.signer_key() );
FC_ASSERT( !eval_state.pending_state()->get_note_record( record.index ).valid() );
eval_state.pending_state()->store_note_record( std::move( record ) );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void transaction_evaluation_state::adjust_vote( slate_id_type slate_id, share_type amount )
{
if( slate_id )
{
auto slate = _current_state->get_delegate_slate( slate_id );
if( !slate ) FC_CAPTURE_AND_THROW( unknown_delegate_slate, (slate_id) );
for( const auto& delegate_id : slate->supported_delegates )
{
if( BTS_BLOCKCHAIN_ENABLE_NEGATIVE_VOTES && delegate_id < signed_int(0) )
net_delegate_votes[abs(delegate_id)].votes_for -= amount;
else
net_delegate_votes[abs(delegate_id)].votes_for += amount;
}
}
}
void burn_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
if( this->amount.amount <= 0 )
FC_CAPTURE_AND_THROW( negative_deposit, (amount) );
if( !message.empty() )
FC_ASSERT( amount.asset_id == 0 );
if( amount.asset_id == 0 )
{
const size_t message_kb = (message.size() / 1024) + 1;
const share_type required_fee = message_kb * BTS_BLOCKCHAIN_MIN_BURN_FEE;
FC_ASSERT( amount.amount >= required_fee, "Message of size ${s} KiB requires at least ${a} satoshis to be burned!",
("s",message_kb)("a",required_fee) );
}
oasset_record asset_rec = eval_state.pending_state()->get_asset_record( amount.asset_id );
FC_ASSERT( asset_rec.valid() );
FC_ASSERT( !asset_rec->is_market_issued() );
asset_rec->current_supply -= this->amount.amount;
eval_state.sub_balance( this->amount );
eval_state.pending_state()->store_asset_record( *asset_rec );
if( account_id != 0 ) // you can offer burnt offerings to God if you like... otherwise it must be an account
{
const oaccount_record account_rec = eval_state.pending_state()->get_account_record( abs( this->account_id ) );
FC_ASSERT( account_rec.valid() );
}
burn_record record;
record.index.account_id = account_id;
record.index.transaction_id = eval_state.trx.id();
record.amount = amount;
record.message = message;
record.signer = message_signature;
FC_ASSERT( !eval_state.pending_state()->get_burn_record( record.index ).valid() );
eval_state.pending_state()->store_burn_record( std::move( record ) );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void release_escrow_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
auto escrow_balance_record = eval_state.pending_state()->get_balance_record( this->escrow_id );
FC_ASSERT( escrow_balance_record.valid() );
if( this->amount_to_receiver < 0 )
FC_CAPTURE_AND_THROW( negative_withdraw, (amount_to_receiver) );
if( this->amount_to_sender < 0 )
FC_CAPTURE_AND_THROW( negative_withdraw, (amount_to_sender) );
if( !eval_state.check_signature( this->released_by ) )
FC_ASSERT( false, "transaction not signed by releasor" );
auto escrow_condition = escrow_balance_record->condition.as<withdraw_with_escrow>();
auto total_released = uint64_t(amount_to_sender) + uint64_t(amount_to_receiver);
FC_ASSERT( total_released <= escrow_balance_record->balance );
FC_ASSERT( total_released >= amount_to_sender ); // check for addition overflow
FC_ASSERT( total_released >= amount_to_receiver ); // check for addition overflow
escrow_balance_record->balance -= total_released;
auto asset_rec = eval_state.pending_state()->get_asset_record( escrow_balance_record->condition.asset_id );
if( amount_to_sender > 0 )
FC_ASSERT( asset_rec->address_is_whitelisted( escrow_condition.sender ) );
if( amount_to_receiver > 0 )
FC_ASSERT( asset_rec->address_is_whitelisted( escrow_condition.receiver ) );
const bool authority_is_retracting = asset_rec->flag_is_active( asset_record::retractable_balances )
&& eval_state.verify_authority( asset_rec->authority );
if( escrow_condition.sender == this->released_by )
{
FC_ASSERT( amount_to_sender == 0 );
FC_ASSERT( amount_to_receiver <= escrow_balance_record->balance );
if( !eval_state.check_signature( escrow_condition.sender ) && !authority_is_retracting)
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.sender) );
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_receiver_balance );
}
else if( escrow_condition.receiver == this->released_by )
{
FC_ASSERT( amount_to_receiver == 0 );
FC_ASSERT( amount_to_sender <= escrow_balance_record->balance );
if( !eval_state.check_signature( escrow_condition.receiver ) && !authority_is_retracting)
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.receiver) );
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_sender_balance );
}
else if( escrow_condition.escrow == this->released_by )
{
if( !eval_state.check_signature( escrow_condition.escrow ) && !authority_is_retracting )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.escrow) );
// get a balance record for the receiver, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_receiver_balance );
}
// get a balance record for the sender, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_sender_balance );
}
}
else if( address() == this->released_by )
{
if( !eval_state.check_signature( escrow_condition.sender ) && !authority_is_retracting)
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.sender) );
if( !eval_state.check_signature( escrow_condition.receiver ) && !authority_is_retracting)
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.receiver) );
// get a balance record for the receiver, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_receiver_balance );
}
// get a balance record for the sender, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state.pending_state()->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state.pending_state()->store_balance_record( *current_sender_balance );
}
}
else
{
FC_ASSERT( false, "not released by a party to the escrow transaction" );
}
eval_state.pending_state()->store_balance_record( *escrow_balance_record );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void execute( asset_id_type quote_id, asset_id_type base_id, const fc::time_point_sec& timestamp )
{
try {
_quote_id = quote_id;
_base_id = base_id;
auto quote_asset = _pending_state->get_asset_record( _quote_id );
// DISABLE MARKET ISSUED ASSETS
if( quote_asset->is_market_issued() )
return; // don't execute anything.
// the order book is soreted from low to high price, so to get the last item (highest bid), we need to go to the first item in the
// next market class and then back up one
auto next_pair = base_id+1 == quote_id ? price( 0, quote_id+1, 0) : price( 0, quote_id, base_id+1 );
_bid_itr = _db_impl._bid_db.lower_bound( market_index_key( next_pair ) );
_ask_itr = _db_impl._ask_db.lower_bound( market_index_key( price( 0, quote_id, base_id) ) );
_short_itr = _db_impl._short_db.lower_bound( market_index_key( next_pair ) );
_collateral_itr = _db_impl._collateral_db.lower_bound( market_index_key( next_pair ) );
if( !_ask_itr.valid() )
{
wlog( "ask iter invalid..." );
_ask_itr = _db_impl._ask_db.begin();
}
if( _short_itr.valid() ) --_short_itr;
else _short_itr = _db_impl._short_db.last();
if( _bid_itr.valid() ) --_bid_itr;
else _bid_itr = _db_impl._bid_db.last();
if( _collateral_itr.valid() ) --_collateral_itr;
else _collateral_itr = _db_impl._collateral_db.last();
asset consumed_bid_depth(0,base_id);
asset consumed_ask_depth(0,base_id);
asset usd_fees_collected(0,quote_id);
asset trading_volume(0, base_id);
omarket_status market_stat = _pending_state->get_market_status( _quote_id, _base_id );
if( !market_stat.valid() )
{
if( quote_asset->is_market_issued() ) FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
FC_ASSERT( market_stat.valid() );
}
while( get_next_bid() && get_next_ask() )
{
idump( (_current_bid)(_current_ask) );
price ask_price = _current_ask->get_price();
// this works for bids, asks, and shorts.... but in the case of a cover
// the current ask can go lower than the call price in order to match
// the bid....
if( _current_ask->type == cover_order )
{
ask_price = std::min( _current_bid->get_price(), _current_ask->get_highest_cover_price() );
}
if( _current_bid->get_price() < ask_price )
break;
if( quote_asset->is_market_issued() )
{
if( !market_stat ||
market_stat->ask_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2 ||
market_stat->bid_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2
)
FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
}
auto quantity = std::min( _current_bid->get_quantity(), _current_ask->get_quantity() );
auto usd_paid_by_bid = quantity * _current_bid->get_price();
auto usd_received_by_ask = quantity * _current_ask->get_price();
auto xts_paid_by_ask = quantity;
auto xts_received_by_bid = quantity;
consumed_bid_depth += quantity;
consumed_ask_depth += quantity;
if( _current_bid->type == short_order )
{
usd_paid_by_bid = usd_received_by_ask;
}
if( _current_ask->type == cover_order )
{
usd_received_by_ask = usd_paid_by_bid;
}
FC_ASSERT( usd_paid_by_bid.amount >= 0 );
FC_ASSERT( xts_paid_by_ask.amount >= 0 );
FC_ASSERT( usd_received_by_ask.amount >= 0 );
FC_ASSERT( xts_received_by_bid.amount >= 0 );
FC_ASSERT( usd_paid_by_bid >= usd_received_by_ask );
FC_ASSERT( xts_paid_by_ask >= xts_received_by_bid );
// sanity check to keep supply from growing without bound
FC_ASSERT( usd_paid_by_bid < asset(quote_asset->maximum_share_supply,quote_id), "", ("usd_paid_by_bid",usd_paid_by_bid)("asset",quote_asset) );
usd_fees_collected += usd_paid_by_bid - usd_received_by_ask;
idump( (usd_fees_collected)(xts_paid_by_ask)(xts_received_by_bid)(quantity) );
market_transaction mtrx;
mtrx.bid_owner = _current_bid->get_owner();
mtrx.ask_owner = _current_ask->get_owner();
mtrx.bid_price = _current_bid->get_price();
mtrx.ask_price = ask_price;
mtrx.bid_paid = usd_paid_by_bid;
mtrx.bid_received = xts_received_by_bid;
mtrx.ask_paid = xts_paid_by_ask;
mtrx.ask_received = usd_received_by_ask;
mtrx.bid_type = _current_bid->type;
mtrx.fees_collected = xts_paid_by_ask - xts_received_by_bid;
_market_transactions.push_back(mtrx);
trading_volume += mtrx.bid_received;
market_stat->ask_depth -= xts_paid_by_ask.amount;
if( _current_ask->type == ask_order )
{
/* rounding errors on price cause this not to go to 0 in some cases */
if( quantity == _current_ask->get_quantity() )
_current_ask->state.balance = 0;
else
_current_ask->state.balance -= xts_paid_by_ask.amount;
FC_ASSERT( _current_ask->state.balance >= 0 );
auto ask_balance_address = withdraw_condition( withdraw_with_signature(_current_ask->get_owner()), quote_id ).get_address();
auto ask_payout = _pending_state->get_balance_record( ask_balance_address );
if( !ask_payout )
ask_payout = balance_record( _current_ask->get_owner(), asset(0,quote_id), 0 );
ask_payout->balance += usd_received_by_ask.amount;
ask_payout->last_update = _pending_state->now();
_pending_state->store_balance_record( *ask_payout );
_pending_state->store_ask_record( _current_ask->market_index, _current_ask->state );
}
else if( _current_ask->type == cover_order )
{
elog( "MATCHING COVER ORDER recv_usd: ${usd} paid_collat: ${c}",
("usd",usd_received_by_ask)("c",xts_paid_by_ask) );
wlog( "current ask: ${c}", ("c",_current_ask) );
// we are in the margin call range...
_current_ask->state.balance -= usd_received_by_ask.amount;
*(_current_ask->collateral) -= xts_paid_by_ask.amount;
FC_ASSERT( _current_ask->state.balance >= 0 );
FC_ASSERT( *_current_ask->collateral >= 0 );
if( _current_ask->state.balance == 0 ) // no more USD left
{ // send collateral home to mommy & daddy
wlog( " collateral balance is now 0!" );
auto ask_balance_address = withdraw_condition(
withdraw_with_signature(_current_ask->get_owner()),
base_id ).get_address();
auto ask_payout = _pending_state->get_balance_record( ask_balance_address );
if( !ask_payout )
ask_payout = balance_record( _current_ask->get_owner(), asset(0,base_id), 0 );
ask_payout->balance += (*_current_ask->collateral);
ask_payout->last_update = _pending_state->now();
_pending_state->store_balance_record( *ask_payout );
_current_ask->collateral = 0;
}
wlog( "storing collateral ${c}", ("c",_current_ask) );
_pending_state->store_collateral_record( _current_ask->market_index,
collateral_record( *_current_ask->collateral,
_current_ask->state.balance ) );
}
if( _current_bid->type == bid_order )
{
_current_bid->state.balance -= usd_paid_by_bid.amount;
FC_ASSERT( _current_bid->state.balance >= 0 );
auto bid_payout = _pending_state->get_balance_record(
withdraw_condition( withdraw_with_signature(_current_bid->get_owner()), base_id ).get_address() );
if( !bid_payout )
bid_payout = balance_record( _current_bid->get_owner(), asset(0,base_id), 0 );
bid_payout->balance += xts_received_by_bid.amount;
bid_payout->last_update = _pending_state->now();
_pending_state->store_balance_record( *bid_payout );
_pending_state->store_bid_record( _current_bid->market_index, _current_bid->state );
}
else if( _current_bid->type == short_order )
{
market_stat->bid_depth -= xts_received_by_bid.amount;
// TODO: what if the amount paid is 0 for bid and ask due to rounding errors,
// make sure this doesn't put us in an infinite loop.
if( quantity == _current_bid->get_quantity() )
_current_bid->state.balance = 0;
else
_current_bid->state.balance -= xts_received_by_bid.amount;
FC_ASSERT( _current_bid->state.balance >= 0 );
auto collateral = (xts_paid_by_ask + xts_received_by_bid).amount;
auto cover_price = usd_received_by_ask / asset( (3*collateral)/4, base_id );
market_index_key cover_index( cover_price, _current_ask->get_owner() );
auto ocover_record = _pending_state->get_collateral_record( cover_index );
if( NOT ocover_record )
ocover_record = collateral_record();
ocover_record->collateral_balance += collateral;
ocover_record->payoff_balance += usd_received_by_ask.amount;
FC_ASSERT( ocover_record->payoff_balance >= 0 );
FC_ASSERT( ocover_record->collateral_balance >= 0 );
_pending_state->store_collateral_record( cover_index, *ocover_record );
_pending_state->store_short_record( _current_bid->market_index, _current_bid->state );
}
} // while bid && ask
if( quote_asset->is_market_issued() )
{
if( !market_stat ||
market_stat->ask_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2 ||
market_stat->bid_depth < BTS_BLOCKCHAIN_MARKET_DEPTH_REQUIREMENT/2
)
FC_CAPTURE_AND_THROW( insufficient_depth, (market_stat) );
}
_pending_state->store_market_status( *market_stat );
if( trading_volume.amount > 0 && get_next_bid() && get_next_ask() )
{
market_history_key key(quote_id, base_id, market_history_key::each_block, _db_impl._head_block_header.timestamp);
market_history_record new_record(_current_bid->get_price(), _current_ask->get_price(), trading_volume.amount);
//LevelDB iterators are dumb and don't support proper past-the-end semantics.
auto last_key_itr = _db_impl._market_history_db.lower_bound(key);
if( !last_key_itr.valid() )
last_key_itr = _db_impl._market_history_db.last();
else
--last_key_itr;
key.timestamp = timestamp;
//Unless the previous record for this market is the same as ours...
if( (!(last_key_itr.valid()
&& last_key_itr.key().quote_id == quote_id
&& last_key_itr.key().base_id == base_id
&& last_key_itr.key().granularity == market_history_key::each_block
&& last_key_itr.value() == new_record)) )
{
//...add a new entry to the history table.
_pending_state->market_history[key] = new_record;
}
fc::time_point_sec start_of_this_hour = timestamp - (timestamp.sec_since_epoch() % (60*60));
market_history_key old_key(quote_id, base_id, market_history_key::each_hour, start_of_this_hour);
if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
{
auto old_record = *opt;
old_record.volume += new_record.volume;
if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
{
old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
_pending_state->market_history[old_key] = old_record;
}
}
else
_pending_state->market_history[old_key] = new_record;
fc::time_point_sec start_of_this_day = timestamp - (timestamp.sec_since_epoch() % (60*60*24));
old_key = market_history_key(quote_id, base_id, market_history_key::each_day, start_of_this_day);
if( auto opt = _db_impl._market_history_db.fetch_optional(old_key) )
{
auto old_record = *opt;
old_record.volume += new_record.volume;
if( new_record.highest_bid > old_record.highest_bid || new_record.lowest_ask < old_record.lowest_ask )
{
old_record.highest_bid = std::max(new_record.highest_bid, old_record.highest_bid);
old_record.lowest_ask = std::min(new_record.lowest_ask, old_record.lowest_ask);
_pending_state->market_history[old_key] = old_record;
}
}
else
_pending_state->market_history[old_key] = new_record;
}
auto market_state = _pending_state->get_market_status( quote_id, base_id );
if( !market_state )
market_state = market_status( quote_id, base_id, 0, 0 );
market_state->last_error.reset();
_pending_state->store_market_status( *market_state );
wlog( "done matching orders" );
_pending_state->apply_changes();
}
catch( const fc::exception& e )
{
wlog( "error executing market ${quote} / ${base}\n ${e}", ("quote",quote_id)("base",base_id)("e",e.to_detail_string()) );
auto market_state = _prior_state->get_market_status( quote_id, base_id );
if( !market_state )
market_state = market_status( quote_id, base_id, 0, 0 );
market_state->last_error = e;
_prior_state->store_market_status( *market_state );
}
} // execute(...)
bool get_next_ask()
{ try {
if( _current_ask && _current_ask->state.balance > 0 )
{
wlog( "current ask" );
return _current_ask.valid();
}
_current_ask.reset();
/**
* Margin calls take priority over all other ask orders
*/
while( _current_bid && _collateral_itr.valid() )
{
auto cover_ask = market_order( cover_order,
_collateral_itr.key(),
order_record(_collateral_itr.value().payoff_balance),
_collateral_itr.value().collateral_balance );
if( cover_ask.get_price().quote_asset_id == _quote_id &&
cover_ask.get_price().base_asset_id == _base_id )
{
if( _current_bid->get_price() < cover_ask.get_highest_cover_price() )
{
// cover position has been blown out, current bid is not able to
// cover the position, so it will sit until the price recovers
// enough to fill it.
//
// The idea here is that the longs have agreed to a maximum
// protection equal to the collateral. If they would like to
// sell their USD for XTS this is the best price the short is
// obligated to offer.
FC_CAPTURE_AND_THROW( insufficient_collateral, (_current_bid)(cover_ask)(cover_ask.get_highest_cover_price()));
--_collateral_itr;
continue;
}
// max bid must be greater than call price
if( _current_bid->get_price() < cover_ask.get_price() )
{
// if( _current_ask->get_price() > cover_ask.get_price() )
{
_current_ask = cover_ask;
_current_payoff_balance = _collateral_itr.value().payoff_balance;
--_collateral_itr;
return _current_ask.valid();
}
}
}
break;
}
if( _ask_itr.valid() )
{
auto ask = market_order( ask_order, _ask_itr.key(), _ask_itr.value() );
wlog( "ASK ITER VALID: ${o}", ("o",ask) );
if( ask.get_price().quote_asset_id == _quote_id &&
ask.get_price().base_asset_id == _base_id )
{
_current_ask = ask;
}
++_ask_itr;
return true;
}
return _current_ask.valid();
} FC_CAPTURE_AND_RETHROW() }
/**
* Throws if the asset is not known to the blockchain.
*/
void transaction_evaluation_state::validate_asset( const asset& asset_to_validate )const
{
auto asset_rec = _current_state->get_asset_record( asset_to_validate.asset_id );
if( NOT asset_rec )
FC_CAPTURE_AND_THROW( unknown_asset_id, (asset_to_validate) );
}
void release_escrow_operation::evaluate( transaction_evaluation_state& eval_state )
{ try {
FC_ASSERT( !"This operation is not enabled yet!" );
auto escrow_balance_record = eval_state._current_state->get_balance_record( this->escrow_id );
FC_ASSERT( escrow_balance_record.valid() );
if( !eval_state.check_signature( this->released_by ) )
FC_ASSERT( !"transaction not signed by releasor" );
auto escrow_condition = escrow_balance_record->condition.as<withdraw_with_escrow>();
auto total_released = amount_to_sender + amount_to_receiver;
FC_ASSERT( total_released <= escrow_balance_record->balance );
FC_ASSERT( total_released >= amount_to_sender ); // check for addition overflow
escrow_balance_record->balance -= total_released;
auto asset_rec = eval_state._current_state->get_asset_record( escrow_balance_record->condition.asset_id );
if( asset_rec->is_restricted() )
{
FC_ASSERT( eval_state._current_state->get_authorization( escrow_balance_record->condition.asset_id, escrow_condition.receiver ) );
}
if( asset_rec->is_retractable() )
{
if( eval_state.verify_authority( asset_rec->authority ) )
{
//
}
}
if( escrow_condition.sender == this->released_by )
{
FC_ASSERT( amount_to_sender == 0 );
FC_ASSERT( amount_to_receiver <= escrow_balance_record->balance );
if( !eval_state.check_signature( escrow_condition.sender ) )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.sender) );
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_receiver_balance );
}
else if( escrow_condition.receiver == this->released_by )
{
FC_ASSERT( amount_to_receiver == 0 );
FC_ASSERT( amount_to_sender <= escrow_balance_record->balance );
if( !eval_state.check_signature( escrow_condition.receiver ) )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.receiver) );
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_sender_balance );
}
else if( escrow_condition.escrow == this->released_by )
{
if( !eval_state.check_signature( escrow_condition.escrow ) )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.escrow) );
// get a balance record for the receiver, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_receiver_balance );
}
// get a balance record for the sender, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_sender_balance );
}
}
else if( address() == this->released_by )
{
if( !eval_state.check_signature( escrow_condition.sender ) )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.sender) );
if( !eval_state.check_signature( escrow_condition.receiver ) )
FC_CAPTURE_AND_THROW( missing_signature, (escrow_condition.receiver) );
// get a balance record for the receiver, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.receiver,
asset( amount_to_receiver, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_receiver_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_receiver_balance )
current_receiver_balance->balance += amount_to_receiver;
else
current_receiver_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_receiver_balance );
}
// get a balance record for the sender, create it if necessary and deposit funds
{
balance_record new_balance_record( escrow_condition.sender,
asset( amount_to_sender, escrow_balance_record->asset_id() ),
escrow_balance_record->slate_id() );
auto current_sender_balance = eval_state._current_state->get_balance_record( new_balance_record.id());
if( current_sender_balance )
current_sender_balance->balance += amount_to_sender;
else
current_sender_balance = new_balance_record;
eval_state._current_state->store_balance_record( *current_sender_balance );
}
}
else
{
FC_ASSERT( !"not released by a party to the escrow transaction" );
}
eval_state._current_state->store_balance_record( *escrow_balance_record );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void deposit_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
if( this->amount <= 0 )
FC_CAPTURE_AND_THROW( negative_deposit, (amount) );
switch( withdraw_condition_types( this->condition.type ) )
{
case withdraw_signature_type:
case withdraw_multisig_type:
case withdraw_escrow_type:
break;
default:
FC_CAPTURE_AND_THROW( invalid_withdraw_condition, (*this) );
}
const balance_id_type deposit_balance_id = this->balance_id();
obalance_record cur_record = eval_state.pending_state()->get_balance_record( deposit_balance_id );
if( !cur_record.valid() )
{
cur_record = balance_record( this->condition );
if( this->condition.type == withdraw_escrow_type )
cur_record->meta_data = variant_object("creating_transaction_id", eval_state.trx.id() );
}
if( cur_record->balance == 0 )
{
cur_record->deposit_date = eval_state.pending_state()->now();
}
else
{
fc::uint128 old_sec_since_epoch( cur_record->deposit_date.sec_since_epoch() );
fc::uint128 new_sec_since_epoch( eval_state.pending_state()->now().sec_since_epoch() );
fc::uint128 avg = (old_sec_since_epoch * cur_record->balance) + (new_sec_since_epoch * this->amount);
avg /= (cur_record->balance + this->amount);
cur_record->deposit_date = time_point_sec( avg.to_integer() );
}
cur_record->balance += this->amount;
eval_state.sub_balance( asset( this->amount, cur_record->asset_id() ) );
if( cur_record->condition.asset_id == 0 && cur_record->condition.slate_id )
eval_state.adjust_vote( cur_record->condition.slate_id, this->amount );
cur_record->last_update = eval_state.pending_state()->now();
const oasset_record asset_rec = eval_state.pending_state()->get_asset_record( cur_record->condition.asset_id );
FC_ASSERT( asset_rec.valid() );
if( asset_rec->is_market_issued() )
{
FC_ASSERT( cur_record->condition.slate_id == 0 );
}
const auto& owners = cur_record->owners();
for( const address& owner : owners )
{
FC_ASSERT( asset_rec->address_is_whitelisted( owner ) );
}
eval_state.pending_state()->store_balance_record( *cur_record );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void withdraw_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
if( this->amount <= 0 )
FC_CAPTURE_AND_THROW( negative_withdraw, (amount) );
obalance_record current_balance_record = eval_state.pending_state()->get_balance_record( this->balance_id );
if( !current_balance_record.valid() )
FC_CAPTURE_AND_THROW( unknown_balance_record, (balance_id) );
if( this->amount > current_balance_record->get_spendable_balance( eval_state.pending_state()->now() ).amount )
FC_CAPTURE_AND_THROW( insufficient_funds, (current_balance_record)(amount) );
auto asset_rec = eval_state.pending_state()->get_asset_record( current_balance_record->condition.asset_id );
FC_ASSERT( asset_rec.valid() );
const bool authority_is_retracting = asset_rec->flag_is_active( asset_record::retractable_balances )
&& eval_state.verify_authority( asset_rec->authority );
if( !authority_is_retracting )
{
FC_ASSERT( !asset_rec->flag_is_active( asset_record::halted_withdrawals ) );
switch( (withdraw_condition_types)current_balance_record->condition.type )
{
case withdraw_signature_type:
{
const withdraw_with_signature condition = current_balance_record->condition.as<withdraw_with_signature>();
const address owner = condition.owner;
if( !eval_state.check_signature( owner ) )
FC_CAPTURE_AND_THROW( missing_signature, (owner) );
break;
}
case withdraw_vesting_type:
{
const withdraw_vesting condition = current_balance_record->condition.as<withdraw_vesting>();
const address owner = condition.owner;
if( !eval_state.check_signature( owner ) )
FC_CAPTURE_AND_THROW( missing_signature, (owner) );
break;
}
case withdraw_multisig_type:
{
auto multisig = current_balance_record->condition.as<withdraw_with_multisig>();
uint32_t valid_signatures = 0;
for( const auto& sig : multisig.owners )
valid_signatures += eval_state.check_signature( sig );
if( valid_signatures < multisig.required )
FC_CAPTURE_AND_THROW( missing_signature, (valid_signatures)(multisig) );
break;
}
default:
FC_CAPTURE_AND_THROW( invalid_withdraw_condition, (current_balance_record->condition) );
}
}
// update delegate vote on withdrawn account..
if( current_balance_record->condition.asset_id == 0 && current_balance_record->condition.slate_id )
eval_state.adjust_vote( current_balance_record->condition.slate_id, -this->amount );
if( asset_rec->is_market_issued() )
{
auto yield = current_balance_record->calculate_yield( eval_state.pending_state()->now(),
current_balance_record->balance,
asset_rec->collected_fees,
asset_rec->current_supply );
if( yield.amount > 0 )
{
asset_rec->collected_fees -= yield.amount;
current_balance_record->balance += yield.amount;
current_balance_record->deposit_date = eval_state.pending_state()->now();
eval_state.yield_claimed[ current_balance_record->asset_id() ] += yield.amount;
eval_state.pending_state()->store_asset_record( *asset_rec );
}
}
current_balance_record->balance -= this->amount;
current_balance_record->last_update = eval_state.pending_state()->now();
eval_state.pending_state()->store_balance_record( *current_balance_record );
if( asset_rec->withdrawal_fee != 0 && !eval_state.verify_authority( asset_rec->authority ) )
eval_state.min_fees[ asset_rec->id ] = std::max( asset_rec->withdrawal_fee, eval_state.min_fees[ asset_rec->id ] );
eval_state.add_balance( asset( this->amount, current_balance_record->condition.asset_id ) );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
void update_balance_vote_operation::evaluate( transaction_evaluation_state& eval_state )const
{ try {
auto current_balance_record = eval_state.pending_state()->get_balance_record( this->balance_id );
FC_ASSERT( current_balance_record.valid(), "No such balance!" );
FC_ASSERT( current_balance_record->condition.asset_id == 0, "Only BTS balances can have restricted owners." );
FC_ASSERT( current_balance_record->condition.type == withdraw_signature_type, "Restricted owners not enabled for anything but basic balances" );
auto last_update_secs = current_balance_record->last_update.sec_since_epoch();
ilog("last_update_secs is: ${secs}", ("secs", last_update_secs) );
auto balance = current_balance_record->balance;
auto fee = BTS_BLOCKCHAIN_PRECISION / 2;
FC_ASSERT( balance > fee );
auto asset_rec = eval_state.pending_state()->get_asset_record( current_balance_record->condition.asset_id );
if( asset_rec->is_market_issued() ) FC_ASSERT( current_balance_record->condition.slate_id == 0 );
if( current_balance_record->condition.slate_id )
{
eval_state.adjust_vote( current_balance_record->condition.slate_id, -balance );
}
current_balance_record->balance -= balance;
current_balance_record->last_update = eval_state.pending_state()->now();
ilog("I'm storing a balance record whose last update is: ${secs}", ("secs", current_balance_record->last_update) );
eval_state.pending_state()->store_balance_record( *current_balance_record );
auto new_restricted_owner = current_balance_record->restricted_owner;
auto new_slate = current_balance_record->condition.slate_id;
if( this->new_restricted_owner.valid() && (this->new_restricted_owner != new_restricted_owner) )
{
ilog("@n new restricted owner specified and its not the existing one");
for( const auto& owner : current_balance_record->owners() ) //eventually maybe multisig can delegate vote
{
if( !eval_state.check_signature( owner ) )
FC_CAPTURE_AND_THROW( missing_signature, (owner) );
}
new_restricted_owner = this->new_restricted_owner;
new_slate = this->new_slate;
}
else // NOT this->new_restricted_owner.valid() || (this->new_restricted_owner == new_restricted_owner)
{
auto restricted_owner = current_balance_record->restricted_owner;
/*
FC_ASSERT( restricted_owner.valid(),
"Didn't specify a new restricted owner, but one currently exists." );
*/
ilog( "@n now: ${secs}", ("secs", eval_state.pending_state()->now().sec_since_epoch()) );
ilog( "@n last update: ${secs}", ("secs", last_update_secs ) );
FC_ASSERT( eval_state.pending_state()->now().sec_since_epoch() - last_update_secs
>= BTS_BLOCKCHAIN_VOTE_UPDATE_PERIOD_SEC,
"You cannot update your vote this frequently with only the voting key!" );
if( NOT eval_state.check_signature( *restricted_owner ) )
{
const auto& owners = current_balance_record->owners();
for( const auto& owner : owners ) //eventually maybe multisig can delegate vote
{
if( NOT eval_state.check_signature( owner ) )
FC_CAPTURE_AND_THROW( missing_signature, (owner) );
}
}
new_slate = this->new_slate;
}
const auto owner = current_balance_record->owner();
FC_ASSERT( owner.valid() );
withdraw_condition new_condition( withdraw_with_signature( *owner ), 0, new_slate );
balance_record newer_balance_record( new_condition );
auto new_balance_record = eval_state.pending_state()->get_balance_record( newer_balance_record.id() );
if( !new_balance_record.valid() )
new_balance_record = current_balance_record;
new_balance_record->condition = new_condition;
if( new_balance_record->balance == 0 )
{
new_balance_record->deposit_date = eval_state.pending_state()->now();
}
else
{
fc::uint128 old_sec_since_epoch( current_balance_record->deposit_date.sec_since_epoch() );
fc::uint128 new_sec_since_epoch( eval_state.pending_state()->now().sec_since_epoch() );
fc::uint128 avg = (old_sec_since_epoch * new_balance_record->balance) + (new_sec_since_epoch * balance);
avg /= (new_balance_record->balance + balance);
new_balance_record->deposit_date = time_point_sec( avg.to_integer() );
}
new_balance_record->last_update = eval_state.pending_state()->now();
new_balance_record->balance += (balance - fee);
new_balance_record->restricted_owner = new_restricted_owner;
eval_state.add_balance( asset(fee, 0) );
// update delegate vote on deposited account..
if( new_balance_record->condition.slate_id )
eval_state.adjust_vote( new_balance_record->condition.slate_id, (balance-fee) );
ilog("I'm storing a balance record whose last update is: ${secs}", ("secs", new_balance_record->last_update) );
eval_state.pending_state()->store_balance_record( *new_balance_record );
} FC_CAPTURE_AND_RETHROW( (*this) ) }
