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#!/usr/bin/python
import pickle, Crypto.Cipher.Blowfish, os, getpass
from threading import Lock
class Wallet(dict):
def __init__(self, filename):
self.lock=Lock()
if os.path.isfile(filename):
self.f=open(filename,"rb+")
self.passwd=getpass.getpass()
self.crypt=Crypto.Cipher.Blowfish.new(self.passwd)
contents_encrypted=self.f.read()
contents=self.crypt.decrypt(contents_encrypted+"\x00"*((-len(contents_encrypted))%8))
if contents.startswith(self.passwd):
self.update(dict(pickle.loads(contents[len(self.passwd):])))
else:
self.f.close()
raise BaseException, "Incorrect Password"
else:
self.f=open(filename,"wb+")
passwd=self.passwd=None
while passwd==None or passwd!=self.passwd:
passwd=getpass.getpass("Enter new password: ")
self.passwd=getpass.getpass("Confirm new password: ")
if passwd!=self.passwd: print "Passwords do not match!"
self.crypt=Crypto.Cipher.Blowfish.new(self.passwd)
self.flush()
def flush(self):
contents=self.passwd+pickle.dumps(self.items(), protocol=2)
self.lock.acquire()
try:
self.f.seek(0)
self.f.write(self.crypt.encrypt(contents+"\x00"*((-len(contents))%8)))
self.f.truncate()
self.f.flush()
finally:
self.lock.release()
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