def make_casper_genesis(alloc, epoch_length, withdrawal_delay,
base_interest_factor, base_penalty_factor):
# The Casper-specific config declaration
casper_config = copy.deepcopy(config.default_config)
casper_config['HOMESTEAD_FORK_BLKNUM'] = 0
casper_config['ANTI_DOS_FORK_BLKNUM'] = 0
casper_config['CLEARING_FORK_BLKNUM'] = 0
casper_config['CONSENSUS_STRATEGY'] = 'hybrid_casper'
casper_config['NULL_SENDER'] = utils.sha3('NULL_SENDER')
casper_config['EPOCH_LENGTH'] = epoch_length
casper_config['WITHDRAWAL_DELAY'] = withdrawal_delay
casper_config['OWNER'] = a0
casper_config['BASE_INTEREST_FACTOR'] = base_interest_factor
casper_config['BASE_PENALTY_FACTOR'] = base_penalty_factor
# Get initialization txs
init_txs, casper_address = mk_initializers(casper_config,
casper_config['NULL_SENDER'])
casper_config['CASPER_ADDRESS'] = casper_address
# Create state and apply required state_transitions for initializing Casper
state = genesis_helpers.mk_basic_state(
alloc, None, env=config.Env(config=casper_config))
state.gas_limit = 10**8
for tx in init_txs:
state.set_balance(utils.privtoaddr(casper_config['NULL_SENDER']),
15**18)
success, output = apply_transaction(state, tx)
assert success
state.gas_used = 0
state.set_balance(utils.privtoaddr(casper_config['NULL_SENDER']), 0)
consensus.initialize(state)
state.commit()
return state
def induct_validator(chain, casper, key, value):
valcode_addr = chain.tx(key, "", 0,
mk_validation_code(utils.privtoaddr(key)))
assert utils.big_endian_to_int(
chain.tx(key, purity_checker_address, 0,
purity_translator.encode('submit', [valcode_addr]))) == 1
casper.deposit(valcode_addr, utils.privtoaddr(key), value=value)
def initialize(state, block=None):
config = state.config
state.txindex = 0
state.gas_used = 0
state.bloom = 0
state.receipts = []
if block is not None:
update_block_env_variables(state, block)
# Initalize the next epoch in the Casper contract
if state.block_number % state.config['EPOCH_LENGTH'] == 0 and state.block_number != 0:
key, account = state.config['NULL_SENDER'], privtoaddr(state.config['NULL_SENDER'])
data = casper_utils.casper_translator.encode('initialize_epoch', [state.block_number // state.config['EPOCH_LENGTH']])
transaction = transactions.Transaction(state.get_nonce(account), 0, 3141592,
state.config['CASPER_ADDRESS'], 0, data).sign(key)
success, output = apply_transaction(state, transaction)
assert success
if state.is_DAO(at_fork_height=True):
for acct in state.config['CHILD_DAO_LIST']:
state.transfer_value(
acct,
state.config['DAO_WITHDRAWER'],
state.get_balance(acct))
if state.is_METROPOLIS(at_fork_height=True):
state.set_code(utils.normalize_address(
config["METROPOLIS_STATEROOT_STORE"]), config["METROPOLIS_GETTER_CODE"])
state.set_code(utils.normalize_address(
config["METROPOLIS_BLOCKHASH_STORE"]), config["METROPOLIS_GETTER_CODE"])
def direct_tx(self, transaction):
self.last_tx = transaction
if self.last_sender is not None and privtoaddr(
self.last_sender) != transaction.sender:
self.last_sender = None
success, output = apply_transaction(self.head_state, transaction)
self.block.transactions.append(transaction)
if not success:
raise TransactionFailed()
return output
def tx(self,
sender=k0,
to=b'\x00' * 20,
value=0,
data=b'',
startgas=STARTGAS,
gasprice=GASPRICE):
sender_addr = privtoaddr(sender)
self.last_sender = sender
transaction = Transaction(self.head_state.get_nonce(sender_addr),
gasprice, startgas, to, value,
data).sign(sender)
output = self.direct_tx(transaction)
return output
def tx(self,
sender=k0,
to=b'\x00' * 20,
value=0,
data=b'',
startgas=STARTGAS,
gasprice=GASPRICE):
sender_addr = privtoaddr(sender)
transaction = Transaction(self.state.get_nonce(sender_addr), gasprice,
startgas, to, value, data).sign(sender)
success, output = apply_transaction(self.state, transaction)
if not success:
raise TransactionFailed()
return output
def test_ecrecover():
c = tester.Chain()
x = c.contract(ecrecover_code, language='serpent')
priv = utils.sha3('some big long brainwallet password')
pub = bitcoin.privtopub(priv)
msghash = utils.sha3('the quick brown fox jumps over the lazy dog')
V, R, S = utils.ecsign(msghash, priv)
assert bitcoin.ecdsa_raw_verify(msghash, (V, R, S), pub)
addr = utils.big_endian_to_int(
utils.sha3(bitcoin.encode_pubkey(pub, 'bin')[1:])[12:])
assert utils.big_endian_to_int(utils.privtoaddr(priv)) == addr
result = x.test_ecrecover(utils.big_endian_to_int(msghash), V, R, S)
assert result == addr
def call(self,
sender=k0,
to=b'\x00' * 20,
value=0,
data=b'',
startgas=STARTGAS,
gasprice=GASPRICE):
self.state.commit()
sender_addr = privtoaddr(sender)
result = apply_message(self.state.ephemeral_clone(),
sender=sender_addr,
to=to,
code_address=to,
value=value,
data=data,
gas=startgas)
if result is None:
raise TransactionFailed()
return result
def __init__(self, key, genesis, network, valcode_addr=None, mining=False):
self.key = key
self.coinbase = utils.privtoaddr(self.key)
self.chain = chain.Chain(genesis=genesis, reset_genesis=True, coinbase=self.coinbase, new_head_cb=self._on_new_head)
self.mining = mining
self.nonce = self.chain.state.get_nonce(self.coinbase)
self.valcode_tx = None
self.deposit_tx = None
self.valcode_addr = valcode_addr
self.prepares = dict()
self.prev_prepare_epoch = 0
self.prev_commit_epoch = 0
self.epoch_length = self.chain.env.config['EPOCH_LENGTH']
# When the transaction_queue is modified, we must set
# self._head_candidate_needs_updating to True in order to force the
# head candidate to be updated.
self.transaction_queue = TransactionQueue()
self._head_candidate_needs_updating = True
# Add validator to the network
self.network = network
self.network.join(self)
def sign(self, key, network_id=None):
"""Sign this transaction with a private key.
A potentially already existing signature would be overridden.
"""
if network_id is None:
rawhash = utils.sha3(rlp.encode(self, UnsignedTransaction))
else:
assert 1 <= network_id < 2**63 - 18
rlpdata = rlp.encode(
rlp.infer_sedes(self).serialize(self)[:-3] +
[network_id, b'', b''])
rawhash = utils.sha3(rlpdata)
key = normalize_key(key)
self.v, self.r, self.s = ecsign(rawhash, key)
if network_id is not None:
self.v += 8 + network_id * 2
self._sender = utils.privtoaddr(key)
return self
import serpent
from biblecoin.config import default_config, Env
import copy
import time
import rlp
# config_string = ':info,bible.vm.log:trace,bible.vm.op:trace,bible.vm.stack:trace,bible.vm.exit:trace,bible.pb.msg:trace,bible.pb.tx:debug'
config_string = ':info,bible.vm.log:trace'
configure_logging(config_string=config_string)
NUM_PARTICIPANTS = 10
BLOCK_MAKING_PPB = 10
print('Initializing privkeys, addresses and randaos for validators')
privkeys = [utils.sha3(str(i)) for i in range(NUM_PARTICIPANTS)]
addrs = [utils.privtoaddr(k) for k in privkeys]
randaos = [RandaoManager(utils.sha3(str(i))) for i in range(NUM_PARTICIPANTS)]
deposit_sizes = [i * 500 + 500 for i in range(NUM_PARTICIPANTS)]
vcodes = [generate_validation_code(a) for a in addrs]
vchashes = [utils.sha3(c) for c in vcodes]
assert len(privkeys) == len(addrs) == len(randaos) == len(
deposit_sizes) == len(vcodes) == len(vchashes) == NUM_PARTICIPANTS
# Creating casper contract translator
ct = get_casper_ct()
assert ct
print('Constructing genesis')
s = make_casper_genesis(validators=[
(generate_validation_code(a), ds * 10**18, r.get(9999), a)
for a, ds, r in zip(addrs, deposit_sizes, randaos)
][:-1],
def join(self, number):
withdrawal_addr = privtoaddr(tester.keys[number])
casper_utils.induct_validator(self.t, self.casper, tester.keys[number],
200 * 10**18)
self.validators[number] = Validator(withdrawal_addr,
tester.keys[number])
from biblecoin.transactions import Transaction
from biblecoin.consensus_strategy import get_consensus_strategy
from biblecoin.config import config_homestead, config_tangerine, config_spurious, config_metropolis, default_config, Env
from biblecoin.pow.ethpow import Miner
from biblecoin.messages import apply_transaction, apply_message
from biblecoin.common import verify_execution_results, mk_block_from_prevstate, set_execution_results
from biblecoin.meta import make_head_candidate
from biblecoin.abi import ContractTranslator
import rlp
# Initialize accounts
accounts = []
keys = []
for account_number in range(10):
keys.append(sha3(to_string(account_number)))
accounts.append(privtoaddr(keys[-1]))
k0, k1, k2, k3, k4, k5, k6, k7, k8, k9 = keys[:10]
a0, a1, a2, a3, a4, a5, a6, a7, a8, a9 = accounts[:10]
base_alloc = {}
minimal_alloc = {}
for a in accounts:
base_alloc[a] = {'balance': 10**24}
for i in range(1, 9):
base_alloc[int_to_addr(i)] = {'balance': 1}
minimal_alloc[int_to_addr(i)] = {'balance': 1}
minimal_alloc[accounts[0]] = {'balance': 10**18}
# Initialize languages
languages = {}
def accounts():
k = utils.sha3(b'cow')
v = utils.privtoaddr(k)
k2 = utils.sha3(b'horse')
v2 = utils.privtoaddr(k2)
return k, v, k2, v2
