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206 lines
7.3 KiB
206 lines
7.3 KiB
from binascii import unhexlify
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from electrum.account import BIP32_Account
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from electrum.bitcoin import bc_address_to_hash_160, xpub_from_pubkey
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from electrum.i18n import _
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from electrum.plugins import BasePlugin, hook
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from electrum.transaction import deserialize, is_extended_pubkey
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class TrezorCompatiblePlugin(BasePlugin):
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# Derived classes provide:
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# libraries_available()
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# constructor()
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# ckd_public
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# types
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# wallet_type
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def __init__(self, parent, config, name):
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BasePlugin.__init__(self, parent, config, name)
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self.wallet = None
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self.handler = None
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self.client = None
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self.transport = None
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def constructor(self, s):
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raise NotImplementedError
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@staticmethod
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def libraries_available():
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raise NotImplementedError
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def give_error(self, message):
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self.print_error(message)
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raise Exception(message)
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def is_available(self):
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if not self.libraries_available():
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return False
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if not self.wallet:
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return False
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if self.wallet.storage.get('wallet_type') != self.wallet_type:
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return False
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return True
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def set_enabled(self, enabled):
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self.wallet.storage.put('use_' + self.name, enabled)
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def is_enabled(self):
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if not self.is_available():
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return False
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if self.wallet.has_seed():
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return False
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return True
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def compare_version(self, major, minor=0, patch=0):
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features = self.get_client().features
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v = [features.major_version, features.minor_version, features.patch_version]
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self.print_error('firmware version', v)
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return cmp(v, [major, minor, patch])
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def atleast_version(self, major, minor=0, patch=0):
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return self.compare_version(major, minor, patch) >= 0
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@hook
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def close_wallet(self):
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self.print_error("clear session")
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if self.client:
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self.client.clear_session()
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self.client.transport.close()
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self.client = None
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self.wallet = None
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def sign_transaction(self, tx, prev_tx, xpub_path):
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self.prev_tx = prev_tx
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self.xpub_path = xpub_path
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client = self.get_client()
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inputs = self.tx_inputs(tx, True)
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outputs = self.tx_outputs(tx)
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try:
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signed_tx = client.sign_tx('Bitcoin', inputs, outputs)[1]
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except Exception as e:
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self.give_error(e)
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finally:
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self.handler.stop()
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raw = signed_tx.encode('hex')
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tx.update_signatures(raw)
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def show_address(self, address):
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client = self.get_client()
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self.wallet.check_proper_device()
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try:
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address_path = self.wallet.address_id(address)
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address_n = client.expand_path(address_path)
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except Exception as e:
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self.give_error(e)
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try:
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client.get_address('Bitcoin', address_n, True)
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except Exception as e:
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self.give_error(e)
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finally:
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self.handler.stop()
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def tx_inputs(self, tx, for_sig=False):
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client = self.get_client()
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inputs = []
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for txin in tx.inputs:
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txinputtype = self.types.TxInputType()
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if txin.get('is_coinbase'):
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prev_hash = "\0"*32
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prev_index = 0xffffffff # signed int -1
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else:
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if for_sig:
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x_pubkeys = txin['x_pubkeys']
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if len(x_pubkeys) == 1:
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x_pubkey = x_pubkeys[0]
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xpub, s = BIP32_Account.parse_xpubkey(x_pubkey)
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xpub_n = client.expand_path(self.xpub_path[xpub])
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txinputtype.address_n.extend(xpub_n + s)
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else:
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def f(x_pubkey):
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if is_extended_pubkey(x_pubkey):
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xpub, s = BIP32_Account.parse_xpubkey(x_pubkey)
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else:
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xpub = xpub_from_pubkey(x_pubkey.decode('hex'))
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s = []
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node = ckd_public.deserialize(xpub)
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return self.types.HDNodePathType(node=node, address_n=s)
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pubkeys = map(f, x_pubkeys)
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multisig = self.types.MultisigRedeemScriptType(
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pubkeys=pubkeys,
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signatures=map(lambda x: x.decode('hex') if x else '', txin.get('signatures')),
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m=txin.get('num_sig'),
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)
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txinputtype = self.types.TxInputType(
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script_type=self.types.SPENDMULTISIG,
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multisig= multisig
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)
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# find which key is mine
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for x_pubkey in x_pubkeys:
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if is_extended_pubkey(x_pubkey):
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xpub, s = BIP32_Account.parse_xpubkey(x_pubkey)
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if xpub in self.xpub_path:
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xpub_n = client.expand_path(self.xpub_path[xpub])
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txinputtype.address_n.extend(xpub_n + s)
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break
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prev_hash = unhexlify(txin['prevout_hash'])
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prev_index = txin['prevout_n']
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txinputtype.prev_hash = prev_hash
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txinputtype.prev_index = prev_index
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if 'scriptSig' in txin:
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script_sig = txin['scriptSig'].decode('hex')
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txinputtype.script_sig = script_sig
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if 'sequence' in txin:
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sequence = txin['sequence']
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txinputtype.sequence = sequence
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inputs.append(txinputtype)
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return inputs
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def tx_outputs(self, tx):
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client = self.get_client()
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outputs = []
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for type, address, amount in tx.outputs:
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assert type == 'address'
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txoutputtype = self.types.TxOutputType()
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if self.wallet.is_change(address):
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address_path = self.wallet.address_id(address)
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address_n = client.expand_path(address_path)
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txoutputtype.address_n.extend(address_n)
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else:
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txoutputtype.address = address
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txoutputtype.amount = amount
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addrtype, hash_160 = bc_address_to_hash_160(address)
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if addrtype == 0:
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txoutputtype.script_type = self.types.PAYTOADDRESS
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elif addrtype == 5:
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txoutputtype.script_type = self.types.PAYTOSCRIPTHASH
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else:
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raise BaseException('addrtype')
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outputs.append(txoutputtype)
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return outputs
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def electrum_tx_to_txtype(self, tx):
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t = self.types.TransactionType()
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d = deserialize(tx.raw)
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t.version = d['version']
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t.lock_time = d['lockTime']
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inputs = self.tx_inputs(tx)
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t.inputs.extend(inputs)
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for vout in d['outputs']:
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o = t.bin_outputs.add()
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o.amount = vout['value']
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o.script_pubkey = vout['scriptPubKey'].decode('hex')
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return t
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def get_tx(self, tx_hash):
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tx = self.prev_tx[tx_hash]
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tx.deserialize()
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return self.electrum_tx_to_txtype(tx)
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