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Comrad/comrad/backend/operators.py
2020-09-29 17:44:31 +01:00

390 lines
11 KiB
Python

# internal imports
import os,sys; sys.path.append(os.path.abspath(os.path.join(os.path.abspath(os.path.join(os.path.dirname(__file__),'..')),'..')))
from comrad import *
from comrad.backend import *
# BEGIN PHONE BOOK (in memory singleton mapping)
PHONEBOOK = {}
CALLBACKS = {}
# Factory constructor
def Comrad(name=None,pubkey=None,*x,**y):
if issubclass(type(name),Operator): return name
if name and not pubkey and type(name)==bytes:
pubkey=b64enc(name)
name=None
from comrad.backend.the_operator import TheOperator
from comrad.backend.the_telephone import TheTelephone
from comrad.backend.comrades import ComradX
global PHONEBOOK
# already have?
if not name and not pubkey: return ComradX()
if name in PHONEBOOK: return PHONEBOOK[name]
pk64 = None if not pubkey else b64enc(pubkey)
if pk64 in PHONEBOOK: return PHONEBOOK[pk64]
global CALLBACKS
callbacks = y.get('callbacks',{})
callbacks = callbacks if callbacks else CALLBACKS
CALLBACKS = callbacks
# print(f'finding Comrad {name} / {pubkey} for the first time!')
# operator?
if name==OPERATOR_NAME:
commie = TheOperator(callbacks=callbacks) #(*x,**y)
if name==TELEPHONE_NAME:
commie = TheTelephone(callbacks=callbacks) #(*x,**y)
else:
# print('booting new commie')
commie = ComradX(name,*x,**y)
# print('found!',name,PHONEBOOK[name],PHONEBOOK[name].keychain())
PHONEBOOK[name] = commie
pubkey=commie.find_pubkey(name)
if pubkey: PHONEBOOK[pubkey.data_b64] = commie
return commie
# from comrad.constants import OPERATOR_ROUTES
class Operator(Keymaker):
ROUTES = [
'register_new_user',
'login',
'deliver_msg',
'introduce',
'deliver_post',
'get_updates'
]
def __eq__(self,other):
if not self.pubkey or not other.pubkey: return False
return self.pubkey.data == other.pubkey.data
def __init__(self,
name=None,
pubkey=None,
keychain = {},
path_crypt_keys=PATH_CRYPT_CA_KEYS,
path_crypt_data=PATH_CRYPT_CA_DATA,
callbacks={},
getpass_func=None
):
global PHONEBOOK
# call Keymaker's intro
super().__init__(
name=name,
keychain=keychain,
path_crypt_keys=path_crypt_keys,
path_crypt_data=path_crypt_data,
callbacks=callbacks,
getpass_func=getpass_func
)
# add to phonebook
if name:
PHONEBOOK[name]=self
pubkey=self.find_pubkey(name)
if pubkey:
PHONEBOOK[pubkey.data_b64]=self
self._inbox_crypt=None
@property
def phone(self):
from comrad.backend.the_telephone import TheTelephone
if type(self)==TheTelephone: return self
if hasattr(self,'_phone'): return self._phone
global TELEPHONE,TELEPHONE_KEYCHAIN
if TELEPHONE: return TELEPHONE
self._phone=TELEPHONE=TheTelephone(callbacks=self._callbacks)
return TELEPHONE
@property
def op(self):
from comrad.backend.the_operator import TheOperator
if type(self)==TheOperator: return self
if hasattr(self,'_op'): return self._op
global OPERATOR,OPERATOR_KEYCHAIN
if OPERATOR: return OPERATOR
self._op=OPERATOR=TheOperator(callbacks=self._callbacks)
return OPERATOR
def compose_msg_to(self,msg,another):
if not self.privkey or not self.pubkey:
raise ComradException('I appear not yet to have an encryption keypair.',self,self.name,self.pubkey,self.privkey,self.keychain())
if not another.name or not another.pubkey:
self.log(f'I {self} failed to compose a message to {another} ?')
raise ComradException('I do not know the Comrad I am writing to.')
# otherwise create msg
frompub = self.pubkey.data if hasattr(self.pubkey,'data') else self.pubkey
topub = another.pubkey.data if hasattr(another.pubkey,'data') else another.pubkey
msg_d = {
'from':frompub,
'from_name':self.name,
'to':topub,
'to_name':another.name,
'msg':msg,
'timestamp':time.time()
}
self.log(f'I am {self} packaging a message to {another}: {msg_d}')
from comrad.backend.messages import Message
msg_obj = Message(msg_d)
# encrypt!
# msg_obj.encrypt()
return msg_obj
def __repr__(self):
clsname=(type(self)).__name__
#name = clsname+' '+
name = '@'+ (self.name if self.name else '?') # if self.name!=clsname else clsname
# try:
# keystr= 'on device: ' + ('+'.join(self.top_keys) if self.pubkey else '')
# except TypeError:
# keystr=''
# # if self.pubkey:
keystr=''
if False:
pubk=self.pubkey_b64.decode()
pubk=pubk[-5:]
pubk = f' ({pubk})'# if pubk else ''
else:
pubk = ''
return f'{name}' #' ({keystr})'
def route_msg(self,msg_obj,reencrypt=True,new_data=None):
# decrypt
# self.log('got msg_obj!',msg_obj)
if msg_obj.is_encrypted:
msg_obj.decrypt()
# try route
if msg_obj.route:
data,route = msg_obj.data, msg_obj.route
if not hasattr(self,route) or route not in self.ROUTES:
raise ComradException(f'Not a valid route!: {route}')
# route it!
self.log(f'Routing msg to {self}.{route}():\n\n{dict_format(msg_obj.data,tab=4)}')
func = getattr(self,route)
# new_data = func(**data)
new_data = func(msg_obj)
self.log(f'New data was received back from {self}.{route}() route:\b\b{new_data}')
msg_obj.msg = msg_obj.msg_d['msg'] = new_data
# try passing it on?
if msg_obj.has_embedded_msg:
new_data = self.route_msg(msg_obj.msg)
msg_obj.msg = msg_obj.msg_d['msg'] = new_data
if not new_data or not reencrypt:
# end of the line?
return msg_obj
# time to turn around and encrypt
# @unsure?``
# from comrad.backend.comrades import Comrad
# if self != self.phone and type(self)!=Comrad:
# # if client, let the request rest
# return msg_obj
# # if remote operator, keep going?
# self.log('time to flip msg around and return to sender. v1:',msg_obj,dict_format(msg_obj.msg_d))#,new_data,reencrypt,msg_obj.route)
# new_msg_obj = msg_obj.to_whom.compose_msg_to(
# msg=new_data,
# another=msg_obj.from_whom
# ) #msg_obj.mark_return_to_sender()
# self.log('returning to sender as:',new_msg_obj)
new_msg_obj = msg_obj.return_to_sender(new_data)
# encrypt
if reencrypt:
# self.log('reencrypting v1',new_msg_obj)
new_msg_obj.encrypt()
# self.log('reencrypting v2',new_msg_obj)
return new_msg_obj
async def ring_ring(self,msg,to_whom,get_resp_from=None,route=None,caller=None):
# ring ring
from comrad.cli.artcode import ART_PHONE_SM1
import textwrap as tw
if caller!=self:
from comrad.cli.artcode import ART_PHONE_SM1
self.log(f'ring ring! I the {self} have received a message from {caller},\n which I will now encrypt and send along to {to_whom}.\n {ART_PHONE_SM1} ')
else:
pass
self.log(f'I ({self}) will now compose and send an encrypted message to {to_whom}.')
if route and type(msg)==dict and not ROUTE_KEYNAME in msg:
msg[ROUTE_KEYNAME] = route
# get encr msg obj
msg_obj = self.compose_msg_to(
msg,
to_whom
)
self.log(f'Here is the message I will now encrypt and to send to {to_whom}:\n\n {dict_format(msg_obj.msg,tab = 2)}')
# encrypting
msg_obj.encrypt()
# pass through the telephone wire by the get_resp_from function
if not get_resp_from: get_resp_from=to_whom.ring_ring
resp_msg_obj = await get_resp_from(msg_obj.msg_d,caller=caller)
self.log('resp_msg_obj <-',str(resp_msg_obj))
if not resp_msg_obj or type(resp_msg_obj)==dict and not resp_msg_obj.get('success'):
return {'status':'I cannot reach the @Operator. Perhaps she has stepped out. Please hang up and try again later.','success':False,'res':resp_msg_obj}
# exit()
# decrypt
if resp_msg_obj.is_encrypted:
resp_msg_obj.decrypt()
# route back?
new_msg_obj=self.route_msg(resp_msg_obj,reencrypt=False)
new_msg = new_msg_obj.msg
# print('new_msg_obj',new_msg_obj)
# print('new_msg',new_msg)
return new_msg
def pronto_pronto(self, msg_obj):
self.log(f'''*ring *ring*
...
{self}: pronto?
{msg_obj.from_whom}: Ciao ciao. I have a message for you:\n{msg_obj}\n''')
return self.route_msg(msg_obj,reencrypt=True)
## inboxes?
def get_inbox_crypt(self,
crypt=None,
uri=None,
prefix='/inbox/'):
if not crypt: crypt=self.crypt_data
if not uri: uri=self.uri
inbox_crypt = CryptList(
crypt=self.crypt_data,
keyname=uri,
prefix=f'{prefix}{self.name}/',
)
self.log('-->',inbox_crypt)
return inbox_crypt
def delete_post(self,post_id,**y):
return self.delete_posts([post_id],**y)
def delete_posts(self,
post_ids,
inbox_uri=None,
inbox_prefix='/inbox/',
post_prefix='/post/'):
# delete from posts
deleted_post_ids=[]
for post_id in post_ids:
if self.crypt_data.delete(
post_id,
prefix=post_prefix
):
deleted_post_ids.append(post_id)
self.log('deleted_post_ids',deleted_post_ids,'...')
res = {
'deleted':post_ids,
}
# delete from inbox
inbox_uri = self.uri if not inbox_uri else inbox_uri
if inbox_uri:
inbox_db=self.get_inbox_crypt(
uri=inbox_uri,
)
res['deleted_from_inbox']=inbox_db.remove(
deleted_post_ids
)
self.log('-->',res)
res['success']=True
res['status']=f'Deleted {len(post_ids)} posts.'
return res
@property
def inbox_db(self):
if not hasattr(self,'_inbox_db'):
self._inbox_db=self.get_inbox_crypt(
prefix='/inbox/'
)
return self._inbox_db
@property
def inbox_unread_db(self):
if not hasattr(self,'_inbox_unread_db'):
self._inbox_unread_db=self.get_inbox_crypt(
prefix='/inbox/unread/',
)
return self._inbox_unread_db
@property
def inbox_read_db(self):
if not hasattr(self,'_inbox_read_db'):
self._inbox_read_db=self.get_inbox_crypt(
prefix='/inbox/read/',
)
return self._inbox_read_db