def send(args):
to = args[0]
f = open("participants.json", "rb")
participants = json.loads(f.read())
f.close()
if not to in participants:
print("Unknown participant: " + str(to))
return
toPub = participants[to]
to = loadPublic(toPub, format="PEM")
(pub, priv) = loadKeys("GitBank")
cs = Coins("GitBank")
coin = cs.get()
if not coin:
print("No coins!")
return
receipt = Send(None, pub, epoch(), coin, to)
receipt.setPrivate(priv)
receipt.sign()
receipts = Receipts("GitBank")
receipts.add(receipt)
def send(dir, coin, to):
try:
receipt=Send(None, pub, epoch(), coin, loadPublic(to))
receipt.setPrivate(priv)
receipt.sign()
receipts=Receipts()
receipts.load(dir+'/receipts.dat')
receipts.add(receipt)
smsg=json.dumps(receipt.save(True))
print('sending')
client=Client()
yield client.connect('localhost', 7050)
yield client.write(smsg+"\n")
s=yield client.read_until("\n")
msg=json.loads(s)
receipt=Receive()
receipt.load(msg)
if receipt.cmd!='receive':
print('Unknown command: '+str(receipt.cmd))
return
if receipt.args.save_pkcs1('DER')!=pub.save_pkcs1('DER'):
print('Not me')
return
if not rsa.verify(str(receipt.sig), receipt.pub):
print('Not verified')
return
cs.save(dir+'/coins.dat')
receipts.add(receipt)
print('saving '+str(len(receipts.receipts)))
receipts.save(dir+'/receipts.dat')
eventloop.halt()
except Exception, e:
print('Exception:')
print(e)
traceback.print_exc()
def handle_recv(conn):
print('connected')
s=yield conn.read_until("\n")
print('read')
print(s)
smsg=json.loads(s)
receipts=Receipts()
receipts.load(dir+'/receipts.dat')
receipt=Send()
receipt.load(smsg)
if receipt.cmd!='send':
print('Unknown command: '+str(receipt.cmd))
return
if receipt.args!=pub:
print('Not me: '+str(receipt.args)+' '+str(pub))
return
if not rsa.verify(str(receipt.sig), receipt.pub):
print('Not verified')
return
cs.add(receipt.coin)
cs.save(dir+'/coins.dat')
receipts.add(receipt)
receipts.save(dir+'/receipts.dat')
receipt=Receive(None, pub, epoch(), receipt.coin, receipt.pub)
receipt.setPrivate(priv)
receipt.sign()
receipts.add(receipt)
receipts.save(dir+'/receipts.dat')
smsg=json.dumps(receipt.save(True))
print('sending')
print(smsg)
yield conn.write(smsg+"\n")
print('sent')