def parse (db, tx, message):
dividend_parse_cursor = db.cursor()
# Unpack message.
try:
if (tx['block_index'] > 288150 or config.TESTNET) and len(message) == LENGTH_2:
quantity_per_unit, asset_id, dividend_asset_id = struct.unpack(FORMAT_2, message)
asset = util.get_asset_name(db, asset_id, tx['block_index'])
dividend_asset = util.get_asset_name(db, dividend_asset_id, tx['block_index'])
status = 'valid'
elif len(message) == LENGTH_1:
quantity_per_unit, asset_id = struct.unpack(FORMAT_1, message)
asset = util.get_asset_name(db, asset_id, tx['block_index'])
dividend_asset = config.XCP
status = 'valid'
else:
raise exceptions.UnpackError
except (exceptions.UnpackError, exceptions.AssetNameError, struct.error) as e:
dividend_asset, quantity_per_unit, asset = None, None, None
status = 'invalid: could not unpack'
if dividend_asset == config.BTC:
status = 'invalid: cannot pay {} dividends within protocol'.format(config.BTC)
if status == 'valid':
# For SQLite3
quantity_per_unit = min(quantity_per_unit, config.MAX_INT)
dividend_total, outputs, problems, fee = validate(db, tx['source'], quantity_per_unit, asset, dividend_asset, block_index=tx['block_index'])
if problems: status = 'invalid: ' + '; '.join(problems)
if status == 'valid':
# Debit.
util.debit(db, tx['source'], dividend_asset, dividend_total, action='dividend', event=tx['tx_hash'])
if tx['block_index'] >= 330000 or config.TESTNET: # Protocol change.
util.debit(db, tx['source'], config.XCP, fee, action='dividend fee', event=tx['tx_hash'])
# Credit.
for output in outputs:
util.credit(db, output['address'], dividend_asset, output['dividend_quantity'], action='dividend', event=tx['tx_hash'])
# Add parsed transaction to message-type–specific table.
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'source': tx['source'],
'asset': asset,
'dividend_asset': dividend_asset,
'quantity_per_unit': quantity_per_unit,
'fee_paid': fee,
'status': status,
}
sql='insert into dividends values(:tx_index, :tx_hash, :block_index, :source, :asset, :dividend_asset, :quantity_per_unit, :fee_paid, :status)'
dividend_parse_cursor.execute(sql, bindings)
dividend_parse_cursor.close()
def unpack(db, message):
try:
asset_id, quantity, tag = struct.unpack(FORMAT, message)
asset = util.get_asset_name(db, asset_id, util.CURRENT_BLOCK_INDEX)
except struct.error:
raise UnpackError('could not unpack')
except AssetIDError:
raise UnpackError('asset id invalid')
return asset, quantity, tag
def unpack(db, message):
try:
asset_id, quantity, tag = struct.unpack(FORMAT, message)
asset = util.get_asset_name(db, asset_id, util.CURRENT_BLOCK_INDEX)
except struct.error:
raise UnpackError('could not unpack')
except AssetIDError:
raise UnpackError('asset id invalid')
return asset, quantity, tag
def unpack(db, message, block_index):
try:
asset_id, quantity = struct.unpack(FORMAT, message)
asset = util.get_asset_name(db, asset_id, block_index)
except struct.error:
raise UnpackError('could not unpack')
except AssetNameError:
raise UnpackError('asset id invalid')
unpacked = {'asset': asset, 'quantity': quantity}
return unpacked
def unpack(db, message, block_index):
try:
asset_id, quantity = struct.unpack(FORMAT, message)
asset = util.get_asset_name(db, asset_id, block_index)
except struct.error:
raise UnpackError('could not unpack')
except AssetNameError:
raise UnpackError('asset id invalid')
unpacked = {
'asset': asset,
'quantity': quantity
}
return unpacked
def parse (db, tx, message):
order_parse_cursor = db.cursor()
# Unpack message.
try:
if len(message) != LENGTH:
raise exceptions.UnpackError
give_id, give_quantity, get_id, get_quantity, expiration, fee_required = struct.unpack(FORMAT, message)
give_asset = util.get_asset_name(db, give_id, tx['block_index'])
get_asset = util.get_asset_name(db, get_id, tx['block_index'])
status = 'open'
except (exceptions.UnpackError, exceptions.AssetNameError, struct.error) as e:
give_asset, give_quantity, get_asset, get_quantity, expiration, fee_required = 0, 0, 0, 0, 0, 0
status = 'invalid: could not unpack'
price = 0
if status == 'open':
try:
price = util.price(get_quantity, give_quantity)
except ZeroDivisionError:
price = 0
# Overorder
order_parse_cursor.execute('''SELECT * FROM balances \
WHERE (address = ? AND asset = ?)''', (tx['source'], give_asset))
balances = list(order_parse_cursor)
if give_asset != config.BTC:
if not balances:
give_quantity = 0
else:
balance = balances[0]['quantity']
if balance < give_quantity:
give_quantity = balance
get_quantity = int(price * give_quantity)
problems = validate(db, tx['source'], give_asset, give_quantity, get_asset, get_quantity, expiration, fee_required, tx['block_index'])
if problems: status = 'invalid: ' + '; '.join(problems)
# Debit give quantity. (Escrow.)
if status == 'open':
if give_asset != config.BTC: # No need (or way) to debit BTC.
util.debit(db, tx['source'], give_asset, give_quantity, action='open order', event=tx['tx_hash'])
# Add parsed transaction to message-type–specific table.
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'source': tx['source'],
'give_asset': give_asset,
'give_quantity': give_quantity,
'give_remaining': give_quantity,
'get_asset': get_asset,
'get_quantity': get_quantity,
'get_remaining': get_quantity,
'expiration': expiration,
'expire_index': tx['block_index'] + expiration,
'fee_required': fee_required,
'fee_required_remaining': fee_required,
'fee_provided': tx['fee'],
'fee_provided_remaining': tx['fee'],
'status': status,
}
sql='insert into orders values(:tx_index, :tx_hash, :block_index, :source, :give_asset, :give_quantity, :give_remaining, :get_asset, :get_quantity, :get_remaining, :expiration, :expire_index, :fee_required, :fee_required_remaining, :fee_provided, :fee_provided_remaining, :status)'
order_parse_cursor.execute(sql, bindings)
# Match.
if status == 'open' and tx['block_index'] != config.MEMPOOL_BLOCK_INDEX:
match(db, tx)
order_parse_cursor.close()
def parse(db, tx, message):
order_parse_cursor = db.cursor()
# Unpack message.
try:
if len(message) != LENGTH:
raise exceptions.UnpackError
give_id, give_quantity, get_id, get_quantity, expiration, fee_required = struct.unpack(
FORMAT, message)
give_asset = util.get_asset_name(db, give_id, tx['block_index'])
get_asset = util.get_asset_name(db, get_id, tx['block_index'])
status = 'open'
except (exceptions.UnpackError, exceptions.AssetNameError,
struct.error) as e:
give_asset, give_quantity, get_asset, get_quantity, expiration, fee_required = 0, 0, 0, 0, 0, 0
status = 'invalid: could not unpack'
price = 0
if status == 'open':
try:
price = util.price(get_quantity, give_quantity)
except ZeroDivisionError:
price = 0
# Overorder
order_parse_cursor.execute(
'''SELECT * FROM balances \
WHERE (address = ? AND asset = ?)''',
(tx['source'], give_asset))
balances = list(order_parse_cursor)
if give_asset != config.BTC:
if not balances:
give_quantity = 0
else:
balance = balances[0]['quantity']
if balance < give_quantity:
give_quantity = balance
get_quantity = int(price * give_quantity)
problems = validate(db, tx['source'], give_asset, give_quantity,
get_asset, get_quantity, expiration, fee_required,
tx['block_index'])
if problems: status = 'invalid: ' + '; '.join(problems)
if util.enabled('btc_order_minimum'):
min_btc_quantity = 0.001 * config.UNIT # 0.001 BTC
if (give_asset == config.BTC and give_quantity < min_btc_quantity
) or (get_asset == config.BTC
and get_quantity < min_btc_quantity):
if problems:
status += '; btc order below minimum'
else:
status = 'invalid: btc order below minimum'
# Debit give quantity. (Escrow.)
if status == 'open':
if give_asset != config.BTC: # No need (or way) to debit BTC.
util.debit(db,
tx['source'],
give_asset,
give_quantity,
action='open order',
event=tx['tx_hash'])
# Add parsed transaction to message-type–specific table.
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'source': tx['source'],
'give_asset': give_asset,
'give_quantity': give_quantity,
'give_remaining': give_quantity,
'get_asset': get_asset,
'get_quantity': get_quantity,
'get_remaining': get_quantity,
'expiration': expiration,
'expire_index': tx['block_index'] + expiration,
'fee_required': fee_required,
'fee_required_remaining': fee_required,
'fee_provided': tx['fee'],
'fee_provided_remaining': tx['fee'],
'status': status,
}
if "integer overflow" not in status:
sql = 'insert into orders values(:tx_index, :tx_hash, :block_index, :source, :give_asset, :give_quantity, :give_remaining, :get_asset, :get_quantity, :get_remaining, :expiration, :expire_index, :fee_required, :fee_required_remaining, :fee_provided, :fee_provided_remaining, :status)'
order_parse_cursor.execute(sql, bindings)
else:
logger.warn("Not storing [order] tx [%s]: %s" %
(tx['tx_hash'], status))
logger.debug("Bindings: %s" % (json.dumps(bindings), ))
# Match.
if status == 'open' and tx['block_index'] != config.MEMPOOL_BLOCK_INDEX:
match(db, tx)
order_parse_cursor.close()
def parse (db, tx, message):
dividend_parse_cursor = db.cursor()
# Unpack message.
try:
if (tx['block_index'] > 288150 or config.TESTNET or config.REGTEST) and len(message) == LENGTH_2:
quantity_per_unit, asset_id, dividend_asset_id = struct.unpack(FORMAT_2, message)
asset = util.get_asset_name(db, asset_id, tx['block_index'])
dividend_asset = util.get_asset_name(db, dividend_asset_id, tx['block_index'])
status = 'valid'
elif len(message) == LENGTH_1:
quantity_per_unit, asset_id = struct.unpack(FORMAT_1, message)
asset = util.get_asset_name(db, asset_id, tx['block_index'])
dividend_asset = config.XCP
status = 'valid'
else:
raise exceptions.UnpackError
except (exceptions.UnpackError, exceptions.AssetNameError, struct.error) as e:
dividend_asset, quantity_per_unit, asset = None, None, None
status = 'invalid: could not unpack'
if dividend_asset == config.BTC:
status = 'invalid: cannot pay {} dividends within protocol'.format(config.BTC)
if status == 'valid':
# For SQLite3
quantity_per_unit = min(quantity_per_unit, config.MAX_INT)
dividend_total, outputs, problems, fee = validate(db, tx['source'], quantity_per_unit, asset, dividend_asset, block_index=tx['block_index'])
if problems: status = 'invalid: ' + '; '.join(problems)
if status == 'valid':
# Debit.
util.debit(db, tx['source'], dividend_asset, dividend_total, action='dividend', event=tx['tx_hash'])
if tx['block_index'] >= 330000 or config.TESTNET or config.REGTEST: # Protocol change.
util.debit(db, tx['source'], config.XCP, fee, action='dividend fee', event=tx['tx_hash'])
# Credit.
for output in outputs:
if not util.enabled('dont_credit_zero_dividend') or output['dividend_quantity'] > 0:
util.credit(db, output['address'], dividend_asset, output['dividend_quantity'], action='dividend', event=tx['tx_hash'])
# Add parsed transaction to message-type–specific table.
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'source': tx['source'],
'asset': asset,
'dividend_asset': dividend_asset,
'quantity_per_unit': quantity_per_unit,
'fee_paid': fee,
'status': status,
}
if "integer overflow" not in status:
sql = 'insert into dividends values(:tx_index, :tx_hash, :block_index, :source, :asset, :dividend_asset, :quantity_per_unit, :fee_paid, :status)'
dividend_parse_cursor.execute(sql, bindings)
else:
logger.warn("Not storing [dividend] tx [%s]: %s" % (tx['tx_hash'], status))
logger.debug("Bindings: %s" % (json.dumps(bindings), ))
dividend_parse_cursor.close()
def parse(db, tx, message):
try:
unpacked = unpack(db, message, tx['block_index'])
status = 'valid'
except (struct.error) as e:
status = 'invalid: truncated message'
except (exceptions.AssetNameError, exceptions.AssetIDError) as e:
status = 'invalid: invalid asset name/id'
except (Exception) as e:
status = 'invalid: couldn\'t unpack; %s' % e
cursor = db.cursor()
plain_sends = []
all_debits = []
all_credits = []
if status == 'valid':
for asset_id in unpacked:
try:
asset = util.get_asset_name(db, asset_id, tx['block_index'])
except (exceptions.AssetNameError) as e:
status = 'invalid: asset %s invalid at block index %i' % (
asset_id, tx['block_index'])
break
cursor.execute(
'''SELECT * FROM balances \
WHERE (address = ? AND asset = ?)''',
(tx['source'], asset_id))
balances = cursor.fetchall()
if not balances:
status = 'invalid: insufficient funds for asset %s, address %s has no balance' % (
asset_id, tx['source'])
break
credits = unpacked[asset_id]
total_sent = reduce(lambda p, t: p + t[1], credits, 0)
if balances[0]['quantity'] < total_sent:
status = 'invalid: insufficient funds for asset %s, needs %i' % (
asset_id, total_sent)
break
if status == 'valid':
plain_sends += map(lambda t: util.py34TupleAppend(asset_id, t),
credits)
all_credits += map(
lambda t: {
"asset": asset_id,
"destination": t[0],
"quantity": t[1]
}, credits)
all_debits.append({"asset": asset_id, "quantity": total_sent})
if status == 'valid':
problems = validate(db, tx['source'], plain_sends, tx['block_index'])
if problems: status = 'invalid:' + '; '.join(problems)
if status == 'valid':
for op in all_credits:
util.credit(db,
op['destination'],
op['asset'],
op['quantity'],
action='mpma send',
event=tx['tx_hash'])
for op in all_debits:
util.debit(db,
tx['source'],
op['asset'],
op['quantity'],
action='mpma send',
event=tx['tx_hash'])
# Enumeration of the plain sends needs to be deterministic, so we sort them by asset and then by address
plain_sends = sorted(plain_sends, key=lambda x: ''.join([x[0], x[1]]))
for i, op in enumerate(plain_sends):
if len(op) > 3:
memo_bytes = op[3]
else:
memo_bytes = None
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'source': tx['source'],
'asset': op[0],
'destination': op[1],
'quantity': op[2],
'status': status,
'memo': memo_bytes,
'msg_index': i
}
sql = 'insert into sends (tx_index, tx_hash, block_index, source, destination, asset, quantity, status, memo, msg_index) values(:tx_index, :tx_hash, :block_index, :source, :destination, :asset, :quantity, :status, :memo, :msg_index)'
cursor.execute(sql, bindings)
if status != 'valid':
logger.warn("Not storing [mpma] tx [%s]: %s" % (tx['tx_hash'], status))
cursor.close()
def parse(db, tx, message, message_type_id):
issuance_parse_cursor = db.cursor()
# Unpack message.
try:
subasset_longname = None
if message_type_id == SUBASSET_ID:
if not util.enabled('subassets', block_index=tx['block_index']):
logger.warn("subassets are not enabled at block %s" %
tx['block_index'])
raise exceptions.UnpackError
# parse a subasset original issuance message
asset_id, quantity, divisible, compacted_subasset_length = struct.unpack(
SUBASSET_FORMAT, message[0:SUBASSET_FORMAT_LENGTH])
description_length = len(
message) - SUBASSET_FORMAT_LENGTH - compacted_subasset_length
if description_length < 0:
logger.warn("invalid subasset length: [issuance] tx [%s]: %s" %
(tx['tx_hash'], compacted_subasset_length))
raise exceptions.UnpackError
messages_format = '>{}s{}s'.format(compacted_subasset_length,
description_length)
compacted_subasset_longname, description = struct.unpack(
messages_format, message[SUBASSET_FORMAT_LENGTH:])
subasset_longname = util.expand_subasset_longname(
compacted_subasset_longname)
callable_, call_date, call_price = False, 0, 0.0
try:
description = description.decode('utf-8')
except UnicodeDecodeError:
description = ''
elif (tx['block_index'] > 283271 or config.TESTNET or
config.REGTEST) and len(message) >= LENGTH_2: # Protocol change.
if len(message) - LENGTH_2 <= 42:
curr_format = FORMAT_2 + '{}p'.format(len(message) - LENGTH_2)
else:
curr_format = FORMAT_2 + '{}s'.format(len(message) - LENGTH_2)
asset_id, quantity, divisible, callable_, call_date, call_price, description = struct.unpack(
curr_format, message)
call_price = round(call_price, 6) # TODO: arbitrary
try:
description = description.decode('utf-8')
except UnicodeDecodeError:
description = ''
else:
if len(message) != LENGTH_1:
raise exceptions.UnpackError
asset_id, quantity, divisible = struct.unpack(FORMAT_1, message)
callable_, call_date, call_price, description = False, 0, 0.0, ''
try:
asset = util.generate_asset_name(asset_id, tx['block_index'])
##This is for backwards compatibility with assets names longer than 12 characters
if asset.startswith('A'):
namedAsset = util.get_asset_name(db, asset_id,
tx['block_index'])
if (namedAsset != 0):
asset = namedAsset
status = 'valid'
except exceptions.AssetIDError:
asset = None
status = 'invalid: bad asset name'
except exceptions.UnpackError as e:
asset, quantity, divisible, callable_, call_date, call_price, description = None, None, None, None, None, None, None
status = 'invalid: could not unpack'
# parse and validate the subasset from the message
subasset_parent = None
if status == 'valid' and subasset_longname is not None: # Protocol change.
try:
# ensure the subasset_longname is valid
util.validate_subasset_longname(subasset_longname)
subasset_parent, subasset_longname = util.parse_subasset_from_asset_name(
subasset_longname)
except exceptions.AssetNameError as e:
asset = None
status = 'invalid: bad subasset name'
reissuance = None
fee = 0
if status == 'valid':
call_date, call_price, problems, fee, description, divisible, reissuance, reissued_asset_longname = validate(
db,
tx['source'],
tx['destination'],
asset,
quantity,
divisible,
callable_,
call_date,
call_price,
description,
subasset_parent,
subasset_longname,
block_index=tx['block_index'])
if problems: status = 'invalid: ' + '; '.join(problems)
if not util.enabled('integer_overflow_fix',
block_index=tx['block_index']
) and 'total quantity overflow' in problems:
quantity = 0
if tx['destination']:
issuer = tx['destination']
transfer = True
quantity = 0
else:
issuer = tx['source']
transfer = False
# Debit fee.
if status == 'valid':
util.debit(db,
tx['source'],
config.XCP,
fee,
action="issuance fee",
event=tx['tx_hash'])
# Lock?
lock = False
if status == 'valid':
if description and description.lower() == 'lock':
lock = True
cursor = db.cursor()
issuances = list(
cursor.execute(
'''SELECT * FROM issuances \
WHERE (status = ? AND asset = ?)
ORDER BY tx_index ASC''',
('valid', asset)))
cursor.close()
description = issuances[-1][
'description'] # Use last description. (Assume previous issuance exists because tx is valid.)
timestamp, value_int, fee_fraction_int = None, None, None
if not reissuance:
# Add to table of assets.
bindings = {
'asset_id': str(asset_id),
'asset_name': str(asset),
'block_index': tx['block_index'],
'asset_longname': subasset_longname,
}
sql = 'insert into assets values(:asset_id, :asset_name, :block_index, :asset_longname)'
issuance_parse_cursor.execute(sql, bindings)
if status == 'valid' and reissuance:
# when reissuing, add the asset_longname to the issuances table for API lookups
asset_longname = reissued_asset_longname
else:
asset_longname = subasset_longname
# Add parsed transaction to message-type–specific table.
bindings = {
'tx_index': tx['tx_index'],
'tx_hash': tx['tx_hash'],
'block_index': tx['block_index'],
'asset': asset,
'quantity': quantity,
'divisible': divisible,
'source': tx['source'],
'issuer': issuer,
'transfer': transfer,
'callable': callable_,
'call_date': call_date,
'call_price': call_price,
'description': description,
'fee_paid': fee,
'locked': lock,
'status': status,
'asset_longname': asset_longname,
}
if "integer overflow" not in status:
sql = 'insert into issuances values(:tx_index, :tx_hash, 0, :block_index, :asset, :quantity, :divisible, :source, :issuer, :transfer, :callable, :call_date, :call_price, :description, :fee_paid, :locked, :status, :asset_longname)'
issuance_parse_cursor.execute(sql, bindings)
else:
logger.warn("Not storing [issuance] tx [%s]: %s" %
(tx['tx_hash'], status))
logger.debug("Bindings: %s" % (json.dumps(bindings), ))
# Credit.
if status == 'valid' and quantity:
util.credit(db,
tx['source'],
asset,
quantity,
action="issuance",
event=tx['tx_hash'])
issuance_parse_cursor.close()
