forked from LBRYCommunity/lbry-sdk
128 lines
4.2 KiB
Python
128 lines
4.2 KiB
Python
import struct
|
|
|
|
from lbrynet.wallet.script import OutputScript
|
|
from torba.server.script import ScriptPubKey, OpCodes
|
|
from torba.server.util import cachedproperty
|
|
from torba.server.hash import hash_to_hex_str, HASHX_LEN
|
|
from hashlib import sha256
|
|
from torba.server.coins import Coin, CoinError
|
|
|
|
|
|
class LBC(Coin):
|
|
from .session import LBRYElectrumX
|
|
from .block_processor import LBRYBlockProcessor
|
|
from .daemon import LBCDaemon
|
|
from .db import LBRYDB
|
|
DAEMON = LBCDaemon
|
|
SESSIONCLS = LBRYElectrumX
|
|
BLOCK_PROCESSOR = LBRYBlockProcessor
|
|
DB = LBRYDB
|
|
NAME = "LBRY"
|
|
SHORTNAME = "LBC"
|
|
NET = "mainnet"
|
|
BASIC_HEADER_SIZE = 112
|
|
CHUNK_SIZE = 96
|
|
XPUB_VERBYTES = bytes.fromhex("0488b21e")
|
|
XPRV_VERBYTES = bytes.fromhex("0488ade4")
|
|
P2PKH_VERBYTE = bytes.fromhex("55")
|
|
P2SH_VERBYTES = bytes.fromhex("7A")
|
|
WIF_BYTE = bytes.fromhex("1C")
|
|
GENESIS_HASH = ('9c89283ba0f3227f6c03b70216b9f665'
|
|
'f0118d5e0fa729cedf4fb34d6a34f463')
|
|
TX_COUNT = 2716936
|
|
TX_COUNT_HEIGHT = 329554
|
|
TX_PER_BLOCK = 1
|
|
RPC_PORT = 9245
|
|
REORG_LIMIT = 200
|
|
PEERS = [
|
|
]
|
|
|
|
@classmethod
|
|
def genesis_block(cls, block):
|
|
'''Check the Genesis block is the right one for this coin.
|
|
|
|
Return the block less its unspendable coinbase.
|
|
'''
|
|
header = cls.block_header(block, 0)
|
|
header_hex_hash = hash_to_hex_str(cls.header_hash(header))
|
|
if header_hex_hash != cls.GENESIS_HASH:
|
|
raise CoinError('genesis block has hash {} expected {}'
|
|
.format(header_hex_hash, cls.GENESIS_HASH))
|
|
|
|
return block
|
|
|
|
@classmethod
|
|
def electrum_header(cls, header, height):
|
|
version, = struct.unpack('<I', header[:4])
|
|
timestamp, bits, nonce = struct.unpack('<III', header[100:112])
|
|
return {
|
|
'version': version,
|
|
'prev_block_hash': hash_to_hex_str(header[4:36]),
|
|
'merkle_root': hash_to_hex_str(header[36:68]),
|
|
'claim_trie_root': hash_to_hex_str(header[68:100]),
|
|
'timestamp': timestamp,
|
|
'bits': bits,
|
|
'nonce': nonce,
|
|
'block_height': height,
|
|
}
|
|
|
|
@cachedproperty
|
|
def address_handlers(self):
|
|
return ScriptPubKey.PayToHandlers(
|
|
address=self.P2PKH_address_from_hash160,
|
|
script_hash=self.P2SH_address_from_hash160,
|
|
pubkey=self.P2PKH_address_from_pubkey,
|
|
unspendable=lambda: None,
|
|
strange=self.claim_address_handler,
|
|
)
|
|
|
|
@classmethod
|
|
def address_from_script(cls, script):
|
|
'''Given a pk_script, return the adddress it pays to, or None.'''
|
|
return ScriptPubKey.pay_to(cls.address_handlers, script)
|
|
|
|
@classmethod
|
|
def claim_address_handler(cls, script):
|
|
'''Parse a claim script, returns the address
|
|
'''
|
|
output = OutputScript(script)
|
|
if output.is_pay_pubkey_hash:
|
|
return cls.P2PKH_address_from_hash160(output.values['pubkey_hash'])
|
|
if output.is_pay_script_hash:
|
|
return cls.P2SH_address_from_hash160(output.values['script_hash'])
|
|
if output.is_pay_pubkey:
|
|
return cls.P2PKH_address_from_pubkey(output.values['pubkey'])
|
|
if output.is_return_data:
|
|
return None
|
|
return None
|
|
|
|
@classmethod
|
|
def hashX_from_script(cls, script):
|
|
'''
|
|
Overrides electrumx hashX from script by extracting addresses from claim scripts.
|
|
'''
|
|
if script and script[0] == OpCodes.OP_RETURN:
|
|
return None
|
|
if script[0] in [
|
|
OutputScript.OP_CLAIM_NAME,
|
|
OutputScript.OP_UPDATE_CLAIM,
|
|
OutputScript.OP_SUPPORT_CLAIM,
|
|
]:
|
|
return cls.address_to_hashX(cls.claim_address_handler(script))
|
|
else:
|
|
return sha256(script).digest()[:HASHX_LEN]
|
|
|
|
|
|
class LBCRegTest(LBC):
|
|
NET = "regtest"
|
|
GENESIS_HASH = '6e3fcf1299d4ec5d79c3a4c91d624a4acf9e2e173d95a1a0504f677669687556'
|
|
XPUB_VERBYTES = bytes.fromhex('043587cf')
|
|
XPRV_VERBYTES = bytes.fromhex('04358394')
|
|
P2PKH_VERBYTE = bytes.fromhex("6f")
|
|
P2SH_VERBYTES = bytes.fromhex("c4")
|
|
|
|
|
|
class LBCTestNet(LBCRegTest):
|
|
NET = "testnet"
|
|
GENESIS_HASH = '9c89283ba0f3227f6c03b70216b9f665f0118d5e0fa729cedf4fb34d6a34f463'
|