103 lines
3.9 KiB
Python
103 lines
3.9 KiB
Python
#!/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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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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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 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, parent=d)
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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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d.show_message(_('%s is covered by GreenAddress instant confirmation') % (tx.hash()), title=_('Verification successful!'))
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else:
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d.show_critical(_('%s is not covered by GreenAddress instant confirmation') % (tx.hash()), title=_('Verification failed!'))
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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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d.show_error(str(e))
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finally:
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d.verify_button.setText(self.button_label)
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