def block_check(block, DB):
def log_(txt): pass #return tools.log(txt)
def tx_check(txs):
start = copy.deepcopy(txs)
out = []
start_copy = []
invalid_because = ['']
while start != start_copy:
if start == []:
return False # Block passes this test
start_copy = copy.deepcopy(start)
if transactions.tx_check[start[0]['type']](start[0], out, invalid_because, DB):
out.append(start.pop())
else:
tools.log('invalid tx: '+str(invalid_because[0]))
return True # Block is invalid
tools.log('block invalid because it has no txs')
return True # Block is invalid
if 'error' in block:
log_('error in block')
return False
length =tools.local_get('length')
if type(block['length'])!=type(1):
log_('wrong length type')
return False
if int(block['length']) != int(length) + 1:
log_('wrong longth')
return False
block_creator_address=tools.addr(block)
mint_address=tools.addr(filter(lambda t: t['type']=='mint', block['txs'])[0])
if block_creator_address!=mint_address:
log_('bad mint')
return False
if block['root_hash']!=tools.db_root():
log_('bad root, have: '+str(tools.db_root())+' need ' +str(block['root_hash']))
return False
txs=filter(lambda x: x['type']=='mint', block['txs'])
if len(txs)!=1:
log_('wrong number of mint txs')
return False
txs=filter(lambda x: x['type']=='sign', block['txs'])
txs=map(lambda x: len(x['jackpots']), txs)
if sum(txs)<custom.signers*2/3 and length>-1:
log_('not enough signatures')
return False
if length >= 0:
prev_block=tools.db_get(length)
to_hash={'prev_hash':prev_block['block_hash'], 'txs':block['txs']}
if not block['block_hash']==tools.det_hash(to_hash):
log_('det hash error')
return False
#total money spent must be less than the total amount of money in signed deposits for this block.
if tx_check(block['txs']):
log_('tx check')
return False
return True
def block_check(block, DB):
def log_(txt): pass #return tools.log(txt)
def tx_check(txs):
start = copy.deepcopy(txs)
out = []
start_copy = []
invalid_because = ['']
while start != start_copy:
if start == []:
return False # Block passes this test
start_copy = copy.deepcopy(start)
if transactions.tx_check[start[0]['type']](start[0], out, invalid_because, DB):
out.append(start.pop())
else:
tools.log('invalid tx: '+str(invalid_because[0]))
return True # Block is invalid
tools.log('block invalid because it has no txs')
return True # Block is invalid
if 'error' in block:
log_('error in block')
return False
length =tools.local_get('length')
if type(block['length'])!=type(1):
log_('wrong length type')
return False
if int(block['length']) != int(length) + 1:
log_('wrong longth')
return False
block_creator_address=tools.addr(block)
mint_address=tools.addr(filter(lambda t: t['type']=='mint', block['txs'])[0])
if block_creator_address!=mint_address:
log_('bad mint')
return False
if block['root_hash']!=tools.db_root():
log_('bad root, have: '+str(tools.db_root())+' need ' +str(block['root_hash']))
return False
txs=filter(lambda x: x['type']=='mint', block['txs'])
if len(txs)!=1:
log_('wrong number of mint txs')
return False
txs=filter(lambda x: x['type']=='sign', block['txs'])
txs=map(lambda x: len(x['jackpots']), txs)
if sum(txs)<custom.signers*2/3 and length>-1:
log_('not enough signatures')
return False
if length >= 0:
prev_block=tools.db_get(length)
to_hash={'prev_hash':prev_block['block_hash'], 'txs':block['txs']}
if not block['block_hash']==tools.det_hash(to_hash):
log_('det hash error')
return False
#total money spent must be less than the total amount of money in signed deposits for this block.
if tx_check(block['txs']):
log_('tx check')
return False
return True
def buy_block(DB, args):
gap=1#this should be an argument.
#we should also let the user delete as many blocks first as they want, to build a fork from a point in history.
length=tools.local_get('length')
prev_block=tools.db_get(length)
txs=tools.local_get('txs')
privkey=tools.local_get('privkey')
height=tools.local_get('height')
block=default_block(length+1, height+gap, txs+[sign(mint_tx(gap), privkey)])
to_hash=''
if length>-1: to_hash={'prev_hash':prev_block['block_hash'], 'txs':block['txs']}
block['block_hash']=tools.det_hash(to_hash)
block['root_hash']=tools.db_root()
block=sign(block, privkey)
block = tools.unpackage(tools.package(block))
DB['suggested_blocks'].put(block)
return block
def buy_block(DB, args):
gap = 1 # this should be an argument.
# we should also let the user delete as many blocks first as they want, to build a fork from a point in history.
length = tools.local_get("length")
prev_block = tools.db_get(length)
txs = tools.local_get("txs")
privkey = tools.local_get("privkey")
height = tools.local_get("height")
block = default_block(length + 1, height + gap, txs + [sign(mint_tx(gap), privkey)])
to_hash = ""
if length > -1:
to_hash = {"prev_hash": prev_block["block_hash"], "txs": block["txs"]}
block["block_hash"] = tools.det_hash(to_hash)
block["root_hash"] = tools.db_root()
block = sign(block, privkey)
block = tools.unpackage(tools.package(block))
DB["suggested_blocks"].put(block)
return block
def buy_block(DB, args):
gap = 1 #this should be an argument.
#we should also let the user delete as many blocks first as they want, to build a fork from a point in history.
length = tools.local_get('length')
prev_block = tools.db_get(length)
txs = tools.local_get('txs')
privkey = tools.local_get('privkey')
height = tools.local_get('height')
block = default_block(length + 1, height + gap,
txs + [sign(mint_tx(gap), privkey)])
to_hash = ''
if length > -1:
to_hash = {'prev_hash': prev_block['block_hash'], 'txs': block['txs']}
block['block_hash'] = tools.det_hash(to_hash)
block['root_hash'] = tools.db_root()
block = sign(block, privkey)
block = tools.unpackage(tools.package(block))
DB['suggested_blocks'].put(block)
return block
