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Comrad/komrade/backend/komrades.py
quadrismegistus aa29b00b9b updates
2020-09-14 07:20:02 +01:00

360 lines
12 KiB
Python

import os,sys; sys.path.append(os.path.abspath(os.path.join(os.path.abspath(os.path.join(os.path.dirname(__file__),'..')),'..')))
from komrade import *
from komrade.backend import *
from komrade.backend.keymaker import *
# BEGIN PHONE BOOK (in memory singleton mapping)
PHONEBOOK = {}
# Factory constructor
def Komrade(name,pubkey=None,*x,**y):
from komrade.backend.the_operator import TheOperator
from komrade.backend.the_telephone import TheTelephone
from komrade.backend.komrades import KomradeX
global PHONEBOOK
# already have?
if not name and not pubkey: return KomradeX()
if name in PHONEBOOK: return PHONEBOOK[name]
pk64 = None if not pubkey else b64enc(pubkey)
if pk64 in PHONEBOOK: return PHONEBOOK[pk64]
# print(f'finding Komrade {name} / {pubkey} for the first time!')
# operator?
if name==OPERATOR_NAME:
kommie = TheOperator() #(*x,**y)
if name==TELEPHONE_NAME:
kommie = TheTelephone() #(*x,**y)
else:
kommie = KomradeX(name,*x,**y)
# print('found!',name,PHONEBOOK[name],PHONEBOOK[name].keychain())
PHONEBOOK[name] = kommie
if kommie.pubkey:
PHONEBOOK[kommie.pubkey.data_b64] = kommie
return kommie
class KomradeX(Caller):
def __init__(self, name=None, passphrase=DEBUG_DEFAULT_PASSPHRASE):
super().__init__(name=name,passphrase=passphrase)
# self.log(f'booted komrade with {name} and {passphrase} and\n\n{dict_format(self.keychain())}')
# if SHOW_STATUS:
# from komrade.cli import CLI
# self.cli = CLI(name=name, komrade=self)
self.boot(create=False)
# self.name=name
# pass
def boot(self,create=False,ping=False):
# Do I already have my keys?
# yes? -- login
keys = self.keychain()
if keys.get('pubkey') and keys.get('privkey'):
# self.log('already booted! @'+self.name)
return True
if self.exists_locally_as_account():
self.log(f'this account (@{self.name}) can be logged into')
return self.login()
elif self.exists_locally_as_contact():
self.log(f'this account (@{self.name}) is a contact')
return #pass #???
elif ping and self.exists_on_server():
self.log(f'this account exists on server. introduce?')
return
elif create:
self.log('account is free: register?')
return self.register()
def exists_locally(self):
return bool(self.pubkey)
def exists_locally_as_contact(self):
return bool(self.pubkey) and not bool(self.privkey)
def exists_locally_as_account(self):
return bool(self.pubkey) and bool(self.privkey_encr)
def exists_on_server(self):
answer = self.phone.ring_ring({
'_route':'does_username_exist',
'name':self.name
})
self.log('answer??',answer)
return answer
# login?
# def login(self):
# if keys.get('pubkey') and keys.get('privkey')
def register(self, name = None, passphrase = None, is_group=None, show_intro=0,show_body=True):
# global PHONEBOOK
# print('got name:',name)
## Defaults
if name and not self.name: self.name=name
if not name and self.name: name=self.name
# if not name and not self.name: name=''
# print('got name',name)
# already have it?
if self.exists_locally_as_account():
return {'success':False, 'status':'You have already created this account.'}
if self.exists_locally_as_contact():
return {'success':False, 'status':'This is already a contact of yours'}
## 1) Have name?
tolog=''
if SHOW_STATUS and show_intro:
self.name = name = self.cli.status_keymaker_part1(name)
elif not name:
self.name = name = input('\nHello, this is Komrade @')
print('\nI would like to sign up for the socialist network revolution.',flush=True)
do_pause()
else:
print(f'Hello, this is Komrade @{name}.\n\nI would like to sign up for the socialist network revolution.')
do_pause()
clear_screen()
self.log(f'@Keymaker: Excellent. But to communicate with komrades securely,\nyou must first cut your public & private encryption keys. ')
# do_pause()
## 2) Make pub public/private keys
keypair = KomradeAsymmetricKey()
pubkey,privkey = keypair.pubkey_obj,keypair.privkey_obj
self.log(f'@Keymaker: I have cut for you a private and public asymmetric key pair\nusing the Elliptic Curve algorithm from Themis cryptography library:\n\n(1) {pubkey}\n\n(2) {privkey}{ART_KEY_PAIR}',clear=False,pause=True)
## 3) Have passphrase?
if SHOW_STATUS and not passphrase:
passphrase = self.cli.status_keymaker_part2(name,passphrase,pubkey,privkey,hasher,self)
else:
if not passphrase: passphrase = DEBUG_DEFAULT_PASSPHRASE
while not passphrase:
passphrase=getpass(f'@Keymaker: Enter a memorable password to encrypt your private key with: \n\n@{self.name}: ')
clear_screen()
## 4) Get hashed password
passhash = hasher(passphrase)
self.log(f'''@Keymaker: I have replaced your password with a disguised, hashed version\nusing a salted SHA-256 algorithm from python's hashlib:\n\n\t{make_key_discreet_str(passhash)}''')
## 5) Encrypt private key
privkey_decr = KomradeSymmetricKeyWithPassphrase(passphrase)
privkey_encr = privkey_decr.encrypt(privkey.data)
privkey_encr_obj = KomradeEncryptedAsymmetricPrivateKey(privkey_encr)
self.log(f"@Keymaker: Store your private key on your device hardware ONLY\nas it was encrypted by your password-generated key:\n\n[Encrypted Private Key]\n({make_key_discreet_str(privkey_encr_obj.data_b64)})")
## 6) Test keychain works
#privkey_decr2 = KomradeSymmetricKeyWithPassphrase(passphrase)
#assert privkey_decr2.decrypt(privkey_encr) == privkey.data
self._keychain['pubkey']=pubkey
self._keychain['privkey_encr']=privkey_encr_obj
self._keychain['privkey']=privkey
# self._keychain['privkey_decr']=privkey_decr
# we should be able to reassemble privkey now?
# self.log('this is my keychain now:')
#assert 'privkey' in self.keychain()
self.log('My keychain now looks like:',dict_format(self.keychain()))
# More narration?
if SHOW_STATUS: self.cli.status_keymaker_part3(privkey,privkey_decr,privkey_encr,passphrase)
# 6) Save for now on client -- will delete if fails on server
self.crypt_keys.set(name, pubkey.data, prefix='/pubkey/')
self.crypt_keys.set(pubkey.data_b64, name, prefix='/name/')
self.crypt_keys.set(pubkey.data_b64, privkey_encr_obj.data, prefix='/privkey_encr/')
# storing myself in memory phonebook
# PHONEBOOK[name]=self
## 7) Save data to server
data = {
'name':name,
'pubkey': pubkey.data,
}
self.log('@Keymaker: Store your public key both on your device hardware\nas well as register it with Komrade @Operator on the remote server:\n\n',dict_format(data,tab=2))
# ring operator
# call from phone since I don't have pubkey on record on Op yet
# self.log('my keychain:',self._keychain,pubkey,self.op._keychain)
resp_msg_d = self.ring_ring(
{
'name':name,
'pubkey': pubkey.data,
},
route='register_new_user'
)
if not resp_msg_d.get('success'):
self.log(f'Registration failed. Message from operator was:\n\n{dict_format(resp_msg_d)}')
self.crypt_keys.delete(name,prefix='/pubkey/')
self.crypt_keys.delete(pubkey.data_b64,prefix='/name/')
self.crypt_keys.delete(pubkey.data_b64,prefix='/privkey_encr/')
return
# otherwise, save things on our end
self.log(f'Registration successful. Message from operator was:\n\n{dict_format(resp_msg_d)}')
self.name=resp_msg_d.get('name')
pubkey_b = resp_msg_d.get('pubkey')
assert pubkey_b == pubkey.data
sec_login = resp_msg_d.get('secret_login')
pubkey=self._keychain['pubkey']=KomradeAsymmetricPublicKey(pubkey_b)
uri_id = b64enc(pubkey_b)
self.log(f'''Now saving name and public key on local device:''')
self.crypt_keys.set(uri_id,sec_login,prefix='/secret_login/')
# save qr too:
self.save_uri_as_qrcode(uri_id)
# self.log(f'saved public key as QR code to:\n {fnfn}\n\n{qr_str}')
return resp_msg_d
# done!
self.log(f'Congratulations. Welcome, Komrade {self}.')
@property
def secret_login(self):
return self.crypt_keys.get(
self.pubkey.data_b64,
prefix='/secret_login/'
)
def login(self,passphrase=None):
# check hardware
if not self.pubkey:
self.log('''Login impossible. I do not have this komrade's public key, much less private one.''')
return
if not self.privkey_encr:
self.log('''Login impossible. I do not have this komrade's private key on this hardware.''')
return
# check password
while not passphrase:
from getpass import getpass
passphrase = getpass('@Keymaker: Enter password for {self} in order to decrypt the encrypted private key:\n\n')
# assemble privkey?
privkey = self.keychain(passphrase=passphrase).get('privkey')
if not privkey:
self.log('''Login impossible. I do not have this komrade's private key on this hardware.''')
return
# compose message
msg = {
'name':self.name,
'pubkey':self.pubkey.data,
'secret_login':self.secret_login
}
# ask operator and get response
resp_msg = self.ring_ring(
msg,
route='login'
)
# get result
self.log('Got result back from operator:',resp_msg)
return resp_msg
## MEETING PEOPLE
def find(self,someone):
if type(someone)==str:
return Komrade(name=someone)
if type(someone)==bytes:
return Komrade(pubkey=someone)
self.log('what is type of someoen here?',type(someone))
return someone
def meet(self,someone):
# get person obj
someone = self.find(someone)
self.log('got someone =',someone,type(someone))
def ring_ring(self,msg,route=None,**y):
if type(msg)==dict and not ROUTE_KEYNAME in msg:
msg[ROUTE_KEYNAME]=route
return super().ring_ring(msg,caller=self,**y)
def send_msg_to(self,msg,to_whom):
to_whom = self.find(to_whom)
self.log(f'found {to_whom}')
msg_obj = self.compose_msg_to(
msg,
to_whom
)
self.log('composed msg:',msg_obj)
msg_obj.encrypt()
self.log('going to send msg_d?',msg_obj.msg_d)
return self.ring_ring(msg_obj.msg_d)
def test_register():
import random
num = random.choice(list(range(0,1000)))
botname=f'marx{str(num).zfill(3)}'
marxbot = Komrade(botname)
# marxbot=Komrade()
marxbot.register(passphrase='boo')
def test_msg():
z = comlink('zuck')
z.login(passphrase='eee')
s = comlink('sergey')
z.send_msg_to('you ssssssuck')
if __name__=='__main__':
test_msg()
# marx = Komrade('marx')
# elon = Komrade('elon')
# marx.register()
# # elon.register()
# # person.register()
# # print(person.pubkey)
# # elon.send_msg_to('youre dumb',marx)
# #Caller('elon').ring_ring({'_route':'say_hello','msg':'my dumb message to operator'})
# # print(marx.exists_on_server())