lbry-sdk/lbry/lbrynet/wallet/account.py
2019-06-20 22:50:39 -04:00

134 lines
4.8 KiB
Python

import json
import logging
from hashlib import sha256
from string import hexdigits
import ecdsa
from torba.client.baseaccount import BaseAccount, HierarchicalDeterministic
log = logging.getLogger(__name__)
def validate_claim_id(claim_id):
if not len(claim_id) == 40:
raise Exception("Incorrect claimid length: %i" % len(claim_id))
if isinstance(claim_id, bytes):
claim_id = claim_id.decode('utf-8')
if set(claim_id).difference(hexdigits):
raise Exception("Claim id is not hex encoded")
class Account(BaseAccount):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.channel_keys = {}
@property
def hash(self) -> bytes:
h = sha256(json.dumps(self.to_dict(False)).encode())
for cert in sorted(self.channel_keys.keys()):
h.update(cert.encode())
return h.digest()
def apply(self, d: dict):
super().apply(d)
self.channel_keys.update(d.get('certificates', {}))
def add_channel_private_key(self, private_key):
public_key_bytes = private_key.get_verifying_key().to_der()
channel_pubkey_hash = self.ledger.public_key_to_address(public_key_bytes)
self.channel_keys[channel_pubkey_hash] = private_key.to_pem().decode()
def get_channel_private_key(self, public_key_bytes):
channel_pubkey_hash = self.ledger.public_key_to_address(public_key_bytes)
private_key_pem = self.channel_keys.get(channel_pubkey_hash)
if private_key_pem:
return ecdsa.SigningKey.from_pem(private_key_pem, hashfunc=sha256)
async def maybe_migrate_certificates(self):
if not self.channel_keys:
return
channel_keys = {}
for private_key_pem in self.channel_keys.values():
private_key = ecdsa.SigningKey.from_pem(private_key_pem, hashfunc=sha256)
public_key_der = private_key.get_verifying_key().to_der()
channel_keys[self.ledger.public_key_to_address(public_key_der)] = private_key_pem
self.channel_keys = channel_keys
self.wallet.save()
async def save_max_gap(self):
if issubclass(self.address_generator, HierarchicalDeterministic):
gap = await self.get_max_gap()
self.receiving.gap = max(20, gap['max_receiving_gap'] + 1)
self.change.gap = max(6, gap['max_change_gap'] + 1)
self.wallet.save()
def get_balance(self, confirmations=0, include_claims=False, **constraints):
if not include_claims:
constraints.update({'is_claim': 0, 'is_update': 0, 'is_support': 0})
return super().get_balance(confirmations, **constraints)
@classmethod
def get_private_key_from_seed(cls, ledger, seed: str, password: str):
return super().get_private_key_from_seed(
ledger, seed, password or 'lbryum'
)
@classmethod
def from_dict(cls, ledger, wallet, d: dict) -> 'Account':
account = super().from_dict(ledger, wallet, d)
account.channel_keys = d.get('certificates', {})
return account
def to_dict(self, include_channel_keys=True):
d = super().to_dict()
if include_channel_keys:
d['certificates'] = self.channel_keys
return d
async def get_details(self, **kwargs):
details = await super().get_details(**kwargs)
details['certificates'] = len(self.channel_keys)
return details
@staticmethod
def constraint_spending_utxos(constraints):
constraints.update({'is_claim': 0, 'is_update': 0, 'is_support': 0})
def get_utxos(self, **constraints):
self.constraint_spending_utxos(constraints)
return super().get_utxos(**constraints)
def get_utxo_count(self, **constraints):
self.constraint_spending_utxos(constraints)
return super().get_utxo_count(**constraints)
def get_claims(self, **constraints):
return self.ledger.db.get_claims(account=self, **constraints)
def get_claim_count(self, **constraints):
return self.ledger.db.get_claim_count(account=self, **constraints)
def get_streams(self, **constraints):
return self.ledger.db.get_streams(account=self, **constraints)
def get_stream_count(self, **constraints):
return self.ledger.db.get_stream_count(account=self, **constraints)
def get_channels(self, **constraints):
return self.ledger.db.get_channels(account=self, **constraints)
def get_channel_count(self, **constraints):
return self.ledger.db.get_channel_count(account=self, **constraints)
def get_supports(self, **constraints):
return self.ledger.db.get_supports(account=self, **constraints)
def get_support_count(self, **constraints):
return self.ledger.db.get_support_count(account=self, **constraints)
async def release_all_outputs(self):
await self.ledger.db.release_all_outputs(self)