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97 lines
3.6 KiB
97 lines
3.6 KiB
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2014 Thomas Voegtlin
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import base64
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import urllib
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import sys
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import requests
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from PyQt4.QtGui import QMessageBox, QApplication, QPushButton
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from electrum.plugins import BasePlugin, hook
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from electrum.i18n import _
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class Plugin(BasePlugin):
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button_label = _("Verify GA instant")
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@hook
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def transaction_dialog(self, d):
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d.verify_button = QPushButton(self.button_label)
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d.verify_button.clicked.connect(lambda: self.do_verify(d))
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d.buttons.insert(0, d.verify_button)
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self.transaction_dialog_update(d)
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def get_my_addr(self, d):
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"""Returns the address for given tx which can be used to request
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instant confirmation verification from GreenAddress"""
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for addr, _ in d.tx.get_outputs():
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if d.wallet.is_mine(addr):
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return addr
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return None
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@hook
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def transaction_dialog_update(self, d):
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if d.tx.is_complete() and self.get_my_addr(d):
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d.verify_button.show()
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else:
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d.verify_button.hide()
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def do_verify(self, d):
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tx = d.tx
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wallet = d.wallet
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window = d.parent
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# 1. get the password and sign the verification request
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password = None
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if wallet.use_encryption:
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msg = _('GreenAddress requires your signature \n'
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'to verify that transaction is instant.\n'
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'Please enter your password to sign a\n'
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'verification request.')
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password = window.password_dialog(msg)
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if not password:
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return
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try:
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d.verify_button.setText(_('Verifying...'))
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QApplication.processEvents() # update the button label
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addr = self.get_my_addr(d)
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message = "Please verify if %s is GreenAddress instant confirmed" % tx.hash()
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sig = wallet.sign_message(addr, message, password)
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sig = base64.b64encode(sig)
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# 2. send the request
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response = requests.request("GET", ("https://greenaddress.it/verify/?signature=%s&txhash=%s" % (urllib.quote(sig), tx.hash())),
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headers = {'User-Agent': 'Electrum'})
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response = response.json()
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# 3. display the result
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if response.get('verified'):
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QMessageBox.information(None, _('Verification successful!'),
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_('%s is covered by GreenAddress instant confirmation') % (tx.hash()), _('OK'))
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else:
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QMessageBox.critical(None, _('Verification failed!'),
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_('%s is not covered by GreenAddress instant confirmation') % (tx.hash()), _('OK'))
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except BaseException as e:
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import traceback
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traceback.print_exc(file=sys.stdout)
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QMessageBox.information(None, _('Error'), str(e), _('OK'))
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finally:
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d.verify_button.setText(self.button_label)
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