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Code Issues Releases Wiki Activity

signtx: remove BufferWriter

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This commit is contained in:
Jan Pochyla 2016-11-10 12:48:40 +01:00
parent 05e035d56a
commit 8109d8363c
1 changed files with 21 additions and 38 deletions
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59
src/apps/common/signtx.py
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@ -159,7 +159,7 @@ async def sign_tx(tx: SignTx, root):
write_uint32(h_sign, tx_lock_time) write_uint32(h_sign, tx_lock_time)
write_uint32(h_sign, 0x0000001) # hash_type write_uint32(h_sign, 0x00000001) # SIGHASH_ALL hash_type
# check the control digests # check the control digests
if tx_hash_digest(h_first, False) != tx_hash_digest(h_second, False): if tx_hash_digest(h_first, False) != tx_hash_digest(h_second, False):
@ -173,12 +173,12 @@ async def sign_tx(tx: SignTx, root):
# serialize input with correct signature # serialize input with correct signature
txi_sign.script_sig = input_derive_script_post_sign( txi_sign.script_sig = input_derive_script_post_sign(
txi_sign, key_sign_pub, signature) txi_sign, key_sign_pub, signature)
w_txi_sign = BufferWriter() w_txi_sign = bytearray()
if i_sign == 0: # serializing first input => prepend tx version and inputs count if i_sign == 0: # serializing first input => prepend tx version and inputs count
write_uint32(w_txi_sign, tx_version) write_uint32(w_txi_sign, tx_version)
write_varint(w_txi_sign, tx_inputs_count) write_varint(w_txi_sign, tx_inputs_count)
write_tx_input(w_txi_sign, txi_sign) write_tx_input(w_txi_sign, txi_sign)
tx_ser.serialized_tx = w_txi_sign.getvalue() tx_ser.serialized_tx = w_txi_sign
tx_req.serialized = tx_ser tx_req.serialized = tx_ser
@ -189,15 +189,15 @@ async def sign_tx(tx: SignTx, root):
txo_bin.script_pubkey = output_derive_script(txo, coin, root) txo_bin.script_pubkey = output_derive_script(txo, coin, root)
# serialize output # serialize output
w_txo_bin = BufferWriter() w_txo_bin = bytearray()
if o == 0: # serializing first output => prepend outputs count if o == 0: # serializing first output => prepend outputs count
write_varint(w_txo_bin, tx_outputs_count) write_varint(w_txo_bin, tx_outputs_count)
write_tx_output(w_txo_bin, txo_bin) write_tx_output(w_txo_bin, txo_bin)
if o == tx_outputs_count - 1: # serializing last output => append tx lock_time if o == tx_outputs_count - 1: # serializing last output => append tx lock_time
write_uint32(w_txo_bin, tx_lock_time) write_uint32(w_txo_bin, tx_lock_time)
tx_ser.signature_index = None tx_ser.signature_index = None
tx_ser.signature = None tx_ser.signature = None
tx_ser.serialized_tx = w_txo_bin.getvalue() tx_ser.serialized_tx = w_txo_bin
tx_req.serialized = tx_ser tx_req.serialized = tx_ser
@ -276,7 +276,7 @@ def output_paytoaddress_extract_raw_address(o: TxOutputType, coin: CoinType, roo
raw_address = base58.decode_check(o_address) raw_address = base58.decode_check(o_address)
else: else:
raise ValueError('Missing address') raise ValueError('Missing address')
if raw_address[0] != coin['address_type']: if raw_address[0] != coin.address_type:
raise ValueError('Invalid address type') raise ValueError('Invalid address type')
return raw_address return raw_address
@ -346,13 +346,13 @@ def script_paytoaddress_new(pubkeyhash: bytes) -> bytearray:
def script_spendaddress_new(pubkey: bytes, signature: bytes) -> bytearray: def script_spendaddress_new(pubkey: bytes, signature: bytes) -> bytearray:
w = BufferWriter() w = bytearray()
write_op_push(w, len(signature) + 1) write_op_push(w, len(signature) + 1)
write_bytes(w, signature) write_bytes(w, signature)
w.writebyte(0x01) w.append(0x01)
write_op_push(w, len(pubkey)) write_op_push(w, len(pubkey))
write_bytes(w, pubkey) write_bytes(w, pubkey)
return w.getvalue() return w
# TX Serialization # TX Serialization
@ -384,7 +384,7 @@ def write_tx_output(w, o: TxOutputBinType):
def write_op_push(w, n: int): def write_op_push(w, n: int):
wb = w.writebyte wb = w.append
if n < 0x4C: if n < 0x4C:
wb(n & 0xFF) wb(n & 0xFF)
elif n < 0xFF: elif n < 0xFF:
@ -407,7 +407,7 @@ def write_op_push(w, n: int):
def write_varint(w, n: int): def write_varint(w, n: int):
wb = w.writebyte wb = w.append
if n < 253: if n < 253:
wb(n & 0xFF) wb(n & 0xFF)
elif n < 65536: elif n < 65536:
@ -423,7 +423,7 @@ def write_varint(w, n: int):
def write_uint32(w, n: int): def write_uint32(w, n: int):
wb = w.writebyte wb = w.append
wb(n & 0xFF) wb(n & 0xFF)
wb((n >> 8) & 0xFF) wb((n >> 8) & 0xFF)
wb((n >> 16) & 0xFF) wb((n >> 16) & 0xFF)
@ -431,7 +431,7 @@ def write_uint32(w, n: int):
def write_uint64(w, n: int): def write_uint64(w, n: int):
wb = w.writebyte wb = w.append
wb(n & 0xFF) wb(n & 0xFF)
wb((n >> 8) & 0xFF) wb((n >> 8) & 0xFF)
wb((n >> 16) & 0xFF) wb((n >> 16) & 0xFF)
@ -443,40 +443,23 @@ def write_uint64(w, n: int):
def write_bytes(w, buf: bytearray): def write_bytes(w, buf: bytearray):
w.write(buf) w.extend(buf)
def write_bytes_rev(w, buf: bytearray): def write_bytes_rev(w, buf: bytearray):
w.write(bytearray(reversed(buf))) w.extend(bytearray(reversed(buf)))
class BufferWriter:
def __init__(self, buf: bytearray=None):
if buf is None:
buf = bytearray()
self.buf = buf
def write(self, buf: bytearray):
self.buf.extend(buf)
def writebyte(self, b: int):
self.buf.append(b)
def getvalue(self) -> bytearray:
return self.buf
class HashWriter: class HashWriter:
def __init__(self, hashfunc): def __init__(self, hashfunc):
self.ctx = hashfunc() self.ctx = hashfunc()
self.buf = bytearray(1) # used in writebyte() self.buf = bytearray(1) # used in append()
def write(self, buf: bytearray): def extend(self, buf: bytearray):
self.ctx.update(buf) self.ctx.update(buf)
def writebyte(self, b: int): def append(self, b: int):
self.buf[0] = b self.buf[0] = b
self.ctx.update(self.buf) self.ctx.update(self.buf)