def proc_transfer_mnt(ext, msg):
from quarkchain.evm.messages import apply_msg
# Data must be >= 96 bytes
if msg.data.size < 96:
return 0, 0, []
gascost = 3
if msg.gas < gascost:
return 0, 0, []
to = utils.int_to_addr(msg.data.extract32(0))
mnt = msg.data.extract32(32)
value = msg.data.extract32(64)
data = msg.data.extract_all(96)
new_msg = vm.Message(
msg.sender,
to,
value,
msg.gas - gascost,
data,
msg.depth + 1,
code_address=to,
static=msg.static,
transfer_token_id=mnt,
gas_token_id=msg.gas_token_id,
)
return apply_msg(ext, new_msg)
def proc_transfer_mnt(ext, msg):
from quarkchain.evm.messages import apply_msg
# Data must be >= 96 bytes and static call not allowed
if msg.data.size < 96 or msg.static:
return 0, 0, []
to = utils.int_to_addr(msg.data.extract32(0))
token_id = msg.data.extract32(32)
value = msg.data.extract32(64)
data = msg.data.extract_all(96)
# Token ID should be within range
if token_id > TOKEN_ID_MAX:
return 0, 0, []
# Doesn't allow target address to be this precompiled contract itself
if to == decode_hex(b"000000000000000000000000000000514b430002"):
return 0, 0, []
gascost = 0
if value > 0:
gascost += opcodes.GCALLVALUETRANSFER
if not ext.account_exists(to):
gascost += opcodes.GCALLNEWACCOUNT
# Out of gas
if msg.gas < gascost:
return 0, 0, []
# Handle insufficient balance or exceeding max call depth
if ext.get_balance(msg.sender,
token_id) < value or msg.depth >= vm.MAX_DEPTH:
return 0, msg.gas - gascost, []
new_msg = vm.Message(
msg.sender,
to,
value,
msg.gas - gascost + opcodes.GSTIPEND * (value > 0),
data,
msg.depth + 1,
code_address=to,
static=False,
transfer_token_id=token_id,
gas_token_id=msg.gas_token_id,
)
return apply_msg(ext, new_msg)