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- from decimal import Decimal
-
- from django.shortcuts import redirect
- from django.utils.translation import ugettext_lazy as _
- from django.core.urlresolvers import reverse
-
- from .base import BackendBase
-
-
- class BitcoinBackend(BackendBase):
- """ Bitcoin backend.
- Connects to a bitcoind.
- """
- backend_id = 'bitcoin'
- backend_verbose_name = _("Bitcoin")
- backend_display_name = _("Bitcoin")
-
- COIN = 100000000
-
- def __init__(self, settings):
- from bitcoin import SelectParams
- from bitcoin.rpc import Proxy
-
- self.btc_value = settings.get('BITCOIN_VALUE')
- self.account = settings.get('ACCOUNT', 'ccvpn3')
-
- chain = settings.get('CHAIN')
- if chain:
- SelectParams(chain)
-
- self.url = settings.get('URL')
- if not self.url:
- return
-
- assert isinstance(self.btc_value, int)
-
- self.make_rpc = lambda: Proxy(self.url)
- self.rpc = self.make_rpc()
- self.backend_enabled = True
-
- def new_payment(self, payment):
- rpc = self.make_rpc()
-
- # bitcoins amount = (amount in cents) / (cents per bitcoin)
- btc_price = round(Decimal(payment.amount) / self.btc_value, 5)
-
- address = str(rpc.getnewaddress(self.account))
-
- msg = _("Please send %(amount)s BTC to %(address)s")
- payment.status_message = msg % dict(amount=str(btc_price), address=address)
- payment.backend_extid = address
- payment.backend_data = dict(btc_price=str(btc_price), btc_address=address)
- payment.save()
- return redirect(reverse('payments:view', args=(payment.id,)))
-
- def check(self, payment):
- rpc = self.make_rpc()
-
- if payment.status != 'new':
- return
-
- btc_price = payment.backend_data.get('btc_price')
- address = payment.backend_data.get('btc_address')
- if not btc_price or not address:
- return
-
- btc_price = Decimal(btc_price)
-
- received = Decimal(rpc.getreceivedbyaddress(address)) / self.COIN
- payment.paid_amount = int(received * self.btc_value)
- payment.backend_data['btc_paid_price'] = str(received)
-
- if received >= btc_price:
- payment.user.vpnuser.add_paid_time(payment.time)
- payment.user.vpnuser.on_payment_confirmed(payment)
- payment.user.vpnuser.save()
-
- payment.status = 'confirmed'
-
- payment.save()
-
- def get_info(self):
- rpc = self.make_rpc()
-
- try:
- info = rpc.getinfo()
- if not info:
- return [(_("Status"), "Error: got None")]
- except Exception as e:
- return [(_("Status"), "Error: " + repr(e))]
- v = info.get('version', 0)
- return (
- (_("Bitcoin value"), "%.2f €" % (self.btc_value / 100)),
- (_("Testnet"), info['testnet']),
- (_("Balance"), '{:f}'.format(info['balance'] / self.COIN)),
- (_("Blocks"), info['blocks']),
- (_("Bitcoind version"), '.'.join(str(v // 10 ** (2 * i) % 10 ** (2 * i))
- for i in range(3, -1, -1))),
- )
-
- def get_ext_url(self, payment):
- if not payment.backend_extid:
- return None
- return 'http://blockr.io/address/info/%s' % payment.backend_extid
-
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