168 lines
6.2 KiB
Python
168 lines
6.2 KiB
Python
import hashlib
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import requests
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import threading
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import json
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import sys
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import traceback
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import base64
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import electrum_zclassic
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from electrum_zclassic.plugins import BasePlugin, hook
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from electrum_zclassic.i18n import _
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class LabelsPlugin(BasePlugin):
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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.target_host = 'labels.electrum.org'
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self.wallets = {}
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def encode(self, wallet, msg):
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password, iv, wallet_id = self.wallets[wallet]
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encrypted = electrum_zclassic.bitcoin.aes_encrypt_with_iv(password, iv,
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msg.encode('utf8'))
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return base64.b64encode(encrypted).decode()
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def decode(self, wallet, message):
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password, iv, wallet_id = self.wallets[wallet]
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decoded = base64.b64decode(message)
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decrypted = electrum_zclassic.bitcoin.aes_decrypt_with_iv(password, iv, decoded)
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return decrypted.decode('utf8')
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def get_nonce(self, wallet):
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# nonce is the nonce to be used with the next change
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nonce = wallet.storage.get('wallet_nonce')
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if nonce is None:
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nonce = 1
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self.set_nonce(wallet, nonce)
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return nonce
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def set_nonce(self, wallet, nonce):
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self.print_error("set", wallet.basename(), "nonce to", nonce)
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wallet.storage.put("wallet_nonce", nonce)
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@hook
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def set_label(self, wallet, item, label):
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if wallet not in self.wallets:
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return
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if not item:
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return
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nonce = self.get_nonce(wallet)
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wallet_id = self.wallets[wallet][2]
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bundle = {"walletId": wallet_id,
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"walletNonce": nonce,
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"externalId": self.encode(wallet, item),
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"encryptedLabel": self.encode(wallet, label)}
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t = threading.Thread(target=self.do_request_safe,
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args=["POST", "/label", False, bundle])
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t.setDaemon(True)
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t.start()
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# Caller will write the wallet
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self.set_nonce(wallet, nonce + 1)
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def do_request(self, method, url = "/labels", is_batch=False, data=None):
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url = 'https://' + self.target_host + url
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kwargs = {'headers': {}}
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if method == 'GET' and data:
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kwargs['params'] = data
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elif method == 'POST' and data:
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kwargs['data'] = json.dumps(data)
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kwargs['headers']['Content-Type'] = 'application/json'
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response = requests.request(method, url, **kwargs)
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if response.status_code != 200:
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raise Exception(response.status_code, response.text)
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response = response.json()
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if "error" in response:
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raise Exception(response["error"])
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return response
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def do_request_safe(self, *args, **kwargs):
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try:
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self.do_request(*args, **kwargs)
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except BaseException as e:
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#traceback.print_exc(file=sys.stderr)
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self.print_error('error doing request')
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def push_thread(self, wallet):
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wallet_data = self.wallets.get(wallet, None)
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if not wallet_data:
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raise Exception('Wallet {} not loaded'.format(wallet))
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wallet_id = wallet_data[2]
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bundle = {"labels": [],
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"walletId": wallet_id,
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"walletNonce": self.get_nonce(wallet)}
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for key, value in wallet.labels.items():
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try:
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encoded_key = self.encode(wallet, key)
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encoded_value = self.encode(wallet, value)
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except:
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self.print_error('cannot encode', repr(key), repr(value))
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continue
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bundle["labels"].append({'encryptedLabel': encoded_value,
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'externalId': encoded_key})
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self.do_request("POST", "/labels", True, bundle)
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def pull_thread(self, wallet, force):
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wallet_data = self.wallets.get(wallet, None)
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if not wallet_data:
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raise Exception('Wallet {} not loaded'.format(wallet))
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wallet_id = wallet_data[2]
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nonce = 1 if force else self.get_nonce(wallet) - 1
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self.print_error("asking for labels since nonce", nonce)
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response = self.do_request("GET", ("/labels/since/%d/for/%s" % (nonce, wallet_id) ))
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if response["labels"] is None:
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self.print_error('no new labels')
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return
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result = {}
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for label in response["labels"]:
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try:
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key = self.decode(wallet, label["externalId"])
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value = self.decode(wallet, label["encryptedLabel"])
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except:
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continue
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try:
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json.dumps(key)
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json.dumps(value)
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except:
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self.print_error('error: no json', key)
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continue
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result[key] = value
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for key, value in result.items():
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if force or not wallet.labels.get(key):
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wallet.labels[key] = value
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self.print_error("received %d labels" % len(response))
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# do not write to disk because we're in a daemon thread
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wallet.storage.put('labels', wallet.labels)
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self.set_nonce(wallet, response["nonce"] + 1)
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self.on_pulled(wallet)
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def pull_thread_safe(self, wallet, force):
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try:
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self.pull_thread(wallet, force)
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except BaseException as e:
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# traceback.print_exc(file=sys.stderr)
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self.print_error('could not retrieve labels')
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def start_wallet(self, wallet):
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nonce = self.get_nonce(wallet)
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self.print_error("wallet", wallet.basename(), "nonce is", nonce)
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mpk = wallet.get_fingerprint()
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if not mpk:
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return
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mpk = mpk.encode('ascii')
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password = hashlib.sha1(mpk).hexdigest()[:32].encode('ascii')
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iv = hashlib.sha256(password).digest()[:16]
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wallet_id = hashlib.sha256(mpk).hexdigest()
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self.wallets[wallet] = (password, iv, wallet_id)
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# If there is an auth token we can try to actually start syncing
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t = threading.Thread(target=self.pull_thread_safe, args=(wallet, False))
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t.setDaemon(True)
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t.start()
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def stop_wallet(self, wallet):
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self.wallets.pop(wallet, None)
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