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pyfishcrypt.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# FiSH/Mircryption clone for X-Chat in 100% Python
#
# Requirements: PyCrypto, and Python 2.5+
#
# Copyright 2011 Nam T. Nguyen ( http://www.vithon.org/forum/Thread/show/54 )
# Released under the BSD license
#
# rewritten by trubo/segfault for irc.prooops.eu #py-fishcrypt [email protected]
#
# irccrypt module is copyright 2009 Bjorn Edstrom ( http://www.bjrn.se/ircsrp )
# with modification from Nam T. Nguyen and trubo
#
# Changelog:
# * 4.21
# + Fixed Empty Action /me
# * 4.20
# + Added support for Stealth mode >> no KeyExchange possible [/SET FISHSTEALTH True/False]
# * 4.19
# + Added support for mIRC CBC KeyExchange, https://github.com/flakes/mirc_fish_10/
# * 4.18
# + Buffix Topic use key from channel not context
# * 4.17
# + CBC Default
# * 4.16
# + Bugfix Topic
# + config plaintextmarker in keyprotection
# + config parameter DEFAULTPROTECT and DEFAULTCBC
# * 4.15
# + Destroy object
# * 4.14
# + Stable
# * 4.13
# + new NickTrace
# + wildcard /KEY search
# + msg send to other target are marked with "Message Send"
# + Tab Completion for udpate command
# + using strxor from the pyCrypto packages if available
# + some performance enhancements
# + Pseudo Threading for Windows
# * 4.12
# + Beta Support
# * 4.11
# + BugFix /UPDATE
# * 4.10
# + BugFix /FISHSETUP
# * 4.09
# + BugFix again /FISHSETUP /UPDATE
# * 4.08
# + BugFix settings are not saved
# * 4.07
# + new Update function
# * 4.06
# + Small BugFixes
# * 4.05
# + BugFix Windows has no full xchatdir now using scriptpath for fish3.pickle
# * 4.04
# + BugFix notices
# * 4.03
# + BugFix /FISHSETUP
# * 4.02
# + noproxy oprions for /FISHSETUP
# * 4.01
# + BugFix pyBlowfish
# * 4.00
# + Windows Support with pyBlowfish.py and irccrypt now included
# * 3.31
# + BugFix unpack large messages
# * 3.30
# + Added chksum for irccrypt with __module_name__ tags http://pastebin.com/vTrWyBKv
# * 3.29
# + BugFix Update and Threaded Update
# * 3.28
# + /SET [fishcrypt]
# * 3.27
# + BugFix /ME+ in Query
# * 3.26
# + Updates over Proxy
# * 3.25
# + crypted /ME+
# * 3.24
# + BugFix topic 332
# * 3.23
# + BugFix notice send
# * 3.22
# + BugFix
# * 3.21
# + BugFix
# * 3.20
# + partly show incomplete messages
# * 3.19
# + /FISHUPDATE update switch
# * 3.18
# + AUTO CBC Mode only in querys
# * 3.17
# + Highlight Bugfix
# * 3.16
# + Highlight
# * 3.15
# + Bugfixes
# * 3.13
# + split lines if longer then 334 Chars
#
# * 3.12
# + add PROTECTKEY to block dh1080 keyexchange on known Keys ( thx ^V^ )
#
# * 3.11
# + add Keystorage encryption
#to
# * 3.10
# + Fix Path for Windows and provide download URL for pycrypto
#
# * 3.09
# + Bugfixes
#
# * 3.08:
# + some docu added
#
# * 3.07:
# + fixed notice in channel not send to user
#
# * 3.06:
# + support for /msg /msg+ /notice /notice+ (trubo)
#
# * 3.04:
# + new lock design (by target) (trubo)
#
# * 3.01:
# + change switches to be compatible with fish.secure.la/xchat/FiSH-XChat.txt (trubo)
#
# * 3.0:
# + rewritten to class XChatCrypt (trubo)
#
# * 2.0:
# + Suport network mask in /key command
# + Alias key_exchange to keyx
# + Support plaintext marker '+p '
# + Support encrypted key store
#
# * 1.0:
# + Initial release
#
###
__module_name__ = 'fishcrypt'
__module_version__ = '4.21'
__module_description__ = 'fish encryption in pure python'
ISBETA = ""
UPDATEURL = 'http://pastebin.com/raw.php?i=ZWGAhvix'
BETAUPDATEURL = 'http://pastebin.com/raw.php?i=MFUhcYA2'
PYBLOWFISHURL = "http://pastebin.com/raw.php?i=nkExr9zu"
SOCKSIPYURL = 'http://socksipy-branch.googlecode.com/svn/trunk/socks.py'
ONMODES = ["Y","y","j","J","1","yes","on","ON","Yes","True","true"]
YESNO = lambda x: (x==0 and "N") or "Y"
import sys
import os
import re
import base64
import hashlib
import struct
import time
from math import log
try:
import xchat
except ImportError:
sys.exit("should be run from xchat plugin with python enabled")
try:
import cPickle as pickle
except ImportError:
import pickle
## check for Windows
import platform
sep = "/"
isWindows = (platform.system() == "Windows")
if isWindows:
sep = "\\"
## append current path
import inspect
scriptname = inspect.currentframe().f_code.co_filename
script = "".join(scriptname.split(sep)[-1:])
path = sep.join(scriptname.split(sep)[:-1])
sys.path.insert(1,path)
SCRIPTCHKSUM = hashlib.sha1(open(scriptname,'rb').read()).hexdigest()
REQUIRESETUP = False
try:
import Crypto.Cipher.Blowfish as cBlowfish
except ImportError:
try:
import pyBlowfish as cBlowfish
pyBlowfishlocation = "%s.py" % str(cBlowfish)[str(cBlowfish).find("from '")+6:str(cBlowfish).find(".py")]
chksum = hashlib.sha1(open(pyBlowfishlocation,'rb').read()).hexdigest()
validVersion = {'35c1b6cd5af14add86dc0cf3f0309a185c308dcd':0.4,'877ae9de309685c975a6d120760c1ff9b4c55719':0.5, '57117e7c9c7649bf490589b7ae06a140e82664c6':0.5}.get(chksum,-1)
if validVersion == -1:
print "\0034** Loaded pyBlowfish.py with checksum: %s is untrusted" % (chksum)
else:
if validVersion < 0.5:
print "\0034** Loaded pyBlowfish.py (%.1f) with checksum: %s is too old" % (validVersion,chksum)
REQUIRESETUP = True
else:
print "\0033** Loaded pyBlowfish.py Version %.1f with checksum: %s" % (validVersion,chksum)
except ImportError:
import platform
print "\002\0034No Blowfish implementation"
if not isWindows:
print "This module requires PyCrypto / The Python Cryptographic Toolkit."
print "Get it from http://www.dlitz.net/software/pycrypto/. or"
else:
path = path.replace(sep,sep*2)
print "Download Python only Blowfish at %s" % PYBLOWFISHURL
print "or type \002/FISHSETUP\002 for automatic install of that"
REQUIRESETUP = True
try:
from Crypto.Util.strxor import strxor as xorstring
except ImportError:
## use slower python only xor
def xorstring(a, b): # Slow.
"""xor string a and b, both of length blocksize."""
xored = []
for i in xrange(8):
xored.append( chr(ord(a[i]) ^ ord(b[i])) )
return "".join(xored)
if not isWindows:
from threading import Thread
else:
class Thread:
def __init__(self,target=None,args=[],kwargs={},name='Thread*'):
self.__target = target
self.__args = args
self.__kwargs = kwargs
self.__name = name
self.__hook = None
def start(self):
print "-Starting Pseudo Thread"
self.__hook = xchat.hook_timer(1,self.__thread,(self.__target,self.__args,self.__kwargs))
def __thread(self,userdata):
try:
_thread,args,kwargs = userdata
_thread(*args,**kwargs)
finally:
xchat.unhook(self.__hook)
self.__hook = None
return False
import socket
REALSOCKET = socket.socket
def makedict(**kwargs):
return kwargs
COLOR = makedict(white="\0030", black="\0031", blue="\0032", red="\0034",
dred="\0035", purple="\0036", dyellow="\0037", yellow="\0038", bgreen="\0039",
dgreen="\00310", green="\00311", bpurple="\00313", dgrey="\00314",
lgrey="\00315", close="\003")
class SecretKey(object):
def __init__(self, dh, key=None,protectmode=False,cbcmode=False):
self.dh = dh
self.key = key
self.cbc_mode = cbcmode
self.protect_mode = protectmode
self.active = True
self.cipher = 0
self.keyname = (None,None)
def __str__(self):
return "%s@%s" % self.keyname
def __repr__(self):
return "%s" % (self.key)
def proxyload(_thread,_useproxy,doExtra):
socket.socket = REALSOCKET
if xchat.get_prefs('net_proxy_type') > 0 and _useproxy:
try:
import socks
except ImportError:
print "\0034python-socksipy not installed"
print "sudo apt-get install python-socksipy"
print "or install %s" % SOCKSIPYURL
print "or just use the noproxy option with /FISHUPDATE and /FISHSETUP"
return xchat.EAT_ALL
proxytype = [0,-1,socks.PROXY_TYPE_SOCKS4,socks.PROXY_TYPE_SOCKS5,socks.PROXY_TYPE_HTTP,-1][xchat.get_prefs('net_proxy_type')]
nameproxytype = ['','Socks4a','Socks5','HTTP','']
if proxytype < 0:
print "\0034Proxytype not suported for updates"
return xchat.EAT_ALL
proxyuser = xchat.get_prefs('net_proxy_user')
proxypass = xchat.get_prefs('net_proxy_pass')
if len(proxyuser) < 1 or len(proxypass) < 1:
proyxuser = proxypass = None
socks.setdefaultproxy(proxytype,xchat.get_prefs('net_proxy_host'),xchat.get_prefs('net_proxy_port'),rdns=True,username=proxyuser,password=proxypass)
print "\00310using xchat proxy settings \0037Type: %s Host: %s Port: %s" % (nameproxytype[proxytype],xchat.get_prefs('net_proxy_host'),xchat.get_prefs('net_proxy_port'))
## Replace default socket
socket.socket = socks.socksocket
import urllib2
_thread(urllib2,doExtra)
def destroyObject(userdata):
global loadObj
del loadObj
return False
class XChatCrypt:
def __init__(self):
print "%sFishcrypt Version %s %s\003" % (COLOR['blue'],__module_version__,ISBETA)
print "SHA1 checksum: %r" % SCRIPTCHKSUM
self.active = True
self.__KeyMap = {}
self.__TargetMap = {}
self.__lockMAP = {}
self.config = {
'PLAINTEXTMARKER' : '+p',
'DEFAULTCBC' : True,
'DEFAULTPROTECT' : False,
'FISHUPDATETIMEOUT' : 30,
'MAXMESSAGELENGTH' : 300,
'USEPROXYUPDATE' : True,
'FISHBETAVERSION': True,
'FISHDEVELOPDEBUG': False,
'AUTOBACKUP': True,
'FISHSTEALTH': False,
}
self.status = {
'CHKPW': None,
'DBPASSWD' : None,
'CRYPTDB' : False,
'LOADED' : True
}
self.__update_thread = None
self._updatedSource = None
self.__hooks = []
self.__hooks.append(xchat.hook_command('SETKEY', self.set_key, help='set a new key for a nick or channel /SETKEY <nick>/#chan [new_key]'))
self.__hooks.append(xchat.hook_command('KEYX', self.key_exchange, help='exchange a new pub key, /KEYX <nick>'))
self.__hooks.append(xchat.hook_command('KEY', self.show_key, help='list key of a nick or channel or all (*), /KEY [nick/#chan/*]' ))
self.__hooks.append(xchat.hook_command('DELKEY', self.del_key, help='remove key, /DELKEY <nick>/#chan/*'))
self.__hooks.append(xchat.hook_command('CBCMODE', self.set_cbc, help='set or shows cbc mode for (current) channel/nick , /CBCMODE [<nick>] <0|1>'))
self.__hooks.append(xchat.hook_command('PROTECTKEY', self.set_protect, help='sets or shows key protection mode for (current) nick, /PROTECTKEY [<nick>] <0|1>'))
self.__hooks.append(xchat.hook_command('ENCRYPT', self.set_act, help='set or shows encryption on for (current) channel/nick , /ENCRYPT [<nick>] <0|1>'))
self.__hooks.append(xchat.hook_command('PRNCRYPT', self.prn_crypt, help='print msg encrpyted localy , /PRNCRYPT <msg>'))
self.__hooks.append(xchat.hook_command('PRNDECRYPT', self.prn_decrypt, help='print msg decrpyted localy , /PRNDECRYPT <msg>'))
self.__hooks.append(xchat.hook_command('UPDATE', self.update, help='Update this Script'))
self.__hooks.append(xchat.hook_command('FISHUPDATE', self.fishupdate, help='Update this Script'))
## check for password sets
self.__hooks.append(xchat.hook_command('SET',self.settings))
self.__hooks.append(xchat.hook_command('DBPASS',self.set_dbpass))
self.__hooks.append(xchat.hook_command('DBLOAD',self.set_dbload))
self.__hooks.append(xchat.hook_command('HELP',self.get_help))
self.__hooks.append(xchat.hook_command('', self.outMessage))
self.__hooks.append(xchat.hook_command('ME+', self.outMessageCmd))
self.__hooks.append(xchat.hook_command('MSG', self.outMessageCmd))
self.__hooks.append(xchat.hook_command('MSG+', self.outMessageForce))
self.__hooks.append(xchat.hook_command('NOTICE', self.outMessageCmd))
self.__hooks.append(xchat.hook_command('NOTICE+', self.outMessageForce))
self.__hooks.append(xchat.hook_server('notice', self.on_notice,priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_server('332', self.server_332_topic,priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Key Press',self.tabComplete))
self.__hooks.append(xchat.hook_print('Notice Send',self.on_notice_send, 'Notice',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Change Nick', self.nick_trace))
self.__hooks.append(xchat.hook_print('Channel Action', self.inMessage, 'Channel Action',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Private Action to Dialog', self.inMessage, 'Private Action to Dialog',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Private Action ', self.inMessage, 'Private Action',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Channel Message', self.inMessage, 'Channel Message',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Private Message to Dialog', self.inMessage, 'Private Message to Dialog',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_print('Private Message', self.inMessage, 'Private Message',priority=xchat.PRI_HIGHEST))
self.__hooks.append(xchat.hook_unload(self.__destroy))
self.loadDB()
def __destroy(self,userdata):
for hook in self.__hooks:
xchat.unhook(hook)
destroyObject(None)
def __del__(self):
print "\00311fishcrypt.py successful unloaded"
def get_help(self,word, word_eol, userdata):
if len(word) < 2:
print "\n\0033 For fishcrypt.py help type /HELP FISHCRYPT"
return xchat.EAT_NONE
if word[1].upper() == "FISHCRYPT":
print ""
print "\002\0032 **** fishcrypt.py Version: %s %s ****" % (__module_version__,ISBETA)
if self.config['FISHBETAVERSION']:
print "\0036Beta download %s" % (BETAUPDATEURL)
print "\0036 %s" % UPDATEURL
print "\n"
print " \002\00314***************** Fishcrypt Help ********************"
print " -----------------------------------------------------"
print "/MSG+ \00314send crypted msg regardless of /ENCRYPT setting"
print "/NOTICE+ \00314send crypted notice regardless of /ENCRYPT setting"
print "/ME+ \00314send crypted CTCP ACTION"
print "/SETKEY \00314set a new key for a nick or channel"
print "/KEYX \00314exchange pubkey for dialog"
print "/KEY \00314show Keys"
print "/DELKEY \00314delete Keys"
print "/CBCMODE \00314enable/disable CBC Mode for this Key"
print "/ENCRYPT \00314enable/disable encryption for this Key"
print "/PROTECTKEY \00314enable/disable protection for keyx key exchange"
print "/DBPASS \00314set/change the passphrase for the Key Storage"
print "/DBLOAD \00314loads the Key Storage"
print "/PRNDECRYPT \00314decrypts messages localy"
print "/PRNCRYPT \00314encrypts messages localy"
print "/FISHUPDATE \00314check online for new Version and update"
print "/SET [fishcrypt] \00314show/set fishcrypt settings"
return xchat.EAT_ALL
def tabComplete(self,word, word_eol, userdata):
if word[0] not in ["65289","65056"]:
return xchat.EAT_NONE
input = xchat.get_info('inputbox')
if input.upper().startswith("/UPDATE FISHCRYPT I"):
newinput = "/UPDATE FISHCRYPT INSTALL"
elif input.upper().startswith("/UPDATE FISHCRYPT D"):
newinput = "/UPDATE FISHCRYPT DIFF"
elif input.upper().startswith("/UPDATE FISHCRYPT C"):
newinput = "/UPDATE FISHCRYPT CHANGES"
elif input.upper().startswith("/UPDATE FISHCRYPT L"):
newinput = "/UPDATE FISHCRYPT LOAD"
elif input.upper() == "/UPDATE FISHCRYPT ":
print "LOAD INSTALL DIFF CHANGES"
return xchat.EAT_NONE
elif input.upper().startswith("/UPDATE F"):
newinput = "/UPDATE FISHCRYPT "
elif input.upper().startswith("/HELP F"):
newinput = "/HELP FISHCRYPT "
elif input.upper().startswith("/SET F"):
newinput = "/SET FISHCRYPT "
else:
return xchat.EAT_NONE
xchat.command("SETTEXT %s" % newinput)
xchat.command("SETCURSOR %d" % len(newinput))
return xchat.EAT_PLUGIN
def fishupdate(self,word, word_eol, userdata):
return self.update(["UPDATE","FISHCRYPT","INSTALL"],None,None)
def update(self,word, word_eol, userdata):
useproxy = self.config['USEPROXYUPDATE']
if len(word) <3:
print "\00313Fishcrypt.py Updater"
print "\00313/UPDATE FISHCRYPT [LOAD,CHANGES,DIFF,INSTALL]"
return xchat.EAT_XCHAT
if word[1].upper() != "FISHCRYPT":
return xchat.EAT_NONE
if self.__update_thread:
print "\0034Update Thread already running"
return xchat.EAT_ALL
_doExtra = None
if word[2].lower() == "diff":
if self._updatedSource:
self._updateDiff(xchat.get_context())
else:
_doExtra = self._updateDiff
if word[2].lower() == "changes":
if self._updatedSource:
self._updateChanges(xchat.get_context())
else:
_doExtra = self._updateChanges
if word[2].lower() == "install":
if self._updatedSource:
self._updateInstall(xchat.get_context())
else:
_doExtra = self._updateInstall
if word[2].lower() == "load" or _doExtra:
proxyload(self._update,useproxy,_doExtra)
return xchat.EAT_ALL
def _update(self,urllib2,doExtra):
self.__update_thread = Thread(target=self.__update,kwargs={'urllib2':urllib2,'context':xchat.get_context(),'doExtra':doExtra},name='fishcrypt_update')
self.__update_thread.start()
def _updateInstall(self,context):
try:
try:
__fd = open(scriptname,"wb")
__fd.write(self._updatedSource)
finally:
__fd.close()
context.prnt( "\00310UPDATE Complete \r\nplease reload the script (/py reload %s)" % (script,) )
except:
context.prnt( "\002\0034UPDATE FAILED" )
raise
def _updateDiff(self,context):
currentscript = open(scriptname,"rb").read()
import difflib
for line in difflib.unified_diff(currentscript.splitlines(1),self._updatedSource.splitlines(1)):
context.prnt( line)
def _updateChanges(self,context):
currentscript = open(scriptname,"rb").read()
import difflib
for line in difflib.ndiff(currentscript[currentscript.find("# Changelog:"):currentscript.find("__module_name__")].splitlines(1),self._updatedSource[self._updatedSource.find("# Changelog:"):self._updatedSource.find("__module_name__")].splitlines(1)):
if len(line) > 2:
if line[0] in ["+","-"]:
context.prnt( line[2:])
def __update(self,urllib2,context,doExtra):
url = UPDATEURL
if self.config['FISHBETAVERSION']:
url = BETAUPDATEURL
context.prnt("\0038.....checking for updates at %r... please wait ...." % url)
try:
try:
__updatescript = urllib2.urlopen(url,timeout=self.config['FISHUPDATETIMEOUT']).read()
__updateversion = re.search("__module_version__ = '([0-9]+\.[0-9]+)'",__updatescript)
if __updateversion:
if float(__module_version__) < float(__updateversion.group(1)) or ISBETA != "":
updatechksum = hashlib.sha1(__updatescript).hexdigest()
if SCRIPTCHKSUM <> updatechksum:
self._updatedSource = __updatescript
context.prnt( "\00310Download Version %s with checksum %r complete" % (__updateversion.group(1),updatechksum))
else:
context.prnt( "\00310No new version available - checksums match")
else:
context.prnt( "\0032%sVersion %s is up to date (found Version %s)" % (__module_name__,__module_version__,__updateversion.group(1)) )
else:
context.prnt( "\0034NO VALID PLUGIN FOUND AT %s" % (url,) )
except urllib2.URLError,err:
context.prnt( "\002\0034LOAD FAILED" )
context.prnt( "%r" % (err,) )
except:
context.prnt( "\002\0034LOAD FAILED" )
context.prnt("%r" % (sys.exc_info(),))
finally:
self.__update_thread = None
context.prnt( "\00310Update Thread finished" )
if doExtra and self._updatedSource:
doExtra(context)
## Load key storage
def loadDB(self):
data = db = None
try:
try:
hnd = open(os.path.join(path,'fish3.pickle'),'rb')
data = hnd.read()
## set DB loaded to False as we have a file we don't want to create a new
self.status['LOADED'] = False
except:
return
finally:
try:
hnd.close()
except:
pass
if data:
try:
db = pickle.loads(data)
print "%sUnencrypted Key Storage loaded" % (COLOR['bpurple'],)
except pickle.UnpicklingError:
## ignore if file is invalid
if data.startswith("+OK *"):
self.status['CRYPTDB'] = True
if self.status['DBPASSWD']:
try:
algo = BlowfishCBC(self.status['DBPASSWD'])
decrypted = mircryption_cbc_unpack(data,algo)
db = pickle.loads(decrypted)
print "%sEncrypted Key Storage loaded" % (COLOR['green'],)
except pickle.UnpicklingError:
self.status['DBPASSWD'] = None
print "%sKey Storage can't be loaded with this password" % (COLOR['dred'],)
print "use /DBLOAD to load it later"
else:
xchat.command('GETSTR "" "SET fishcrypt_passload" "Enter your Key Storage Password"')
pass
if type(db) == dict:
self.status['LOADED'] = True
## save temp keymap
oldKeyMap = self.__KeyMap
oldTargetMap = self.__TargetMap
## fill dict with the loaded Keymap
self.__KeyMap = db.get("KeyMap",{})
self.__TargetMap = db.get("TargetMap",{})
self.__KeyMap.update(oldKeyMap)
self.__TargetMap.update(oldTargetMap)
for key in self.__KeyMap.keys():
self.__KeyMap[key].keyname = key
if not hasattr(self.__KeyMap[key],'protect_mode'):
self.__KeyMap[key].protect_mode = False
self.cleanUpTargetMap()
## only import valid config values
for key in self.config.keys():
try:
self.config[key] = db["Config"][key]
except KeyError:
pass
if self.config['FISHDEVELOPDEBUG']:
self.__hooks.append(xchat.hook_command('FISHEVAL',self.__evaldebug))
def cleanUpTargetMap(self):
## DB Cleanup
for network in self.__TargetMap.values():
for target,value in network.items():
if type(value[1]) <> SecretKey or value[0] < time.time() - 60*60*24*7 or value[1] not in self.__KeyMap.values():
del network[target]
print "Expired: %r %r" % (target,value)
## save keys to storage
def saveDB(self):
self.cleanUpTargetMap()
if not self.status['LOADED']:
print "Key Storage not loaded, no save. use /DBLOAD to load it"
return
try:
data = pickle.dumps({
'KeyMap': self.__KeyMap,
'TargetMap': self.__TargetMap,
'Config': self.config,
'Version': __module_version__
})
hnd = open(os.path.join(path,'fish3.pickle'),'wb')
if self.status['DBPASSWD']:
algo = BlowfishCBC(self.status['DBPASSWD'])
encrypted = mircryption_cbc_pack(data,algo)
data = encrypted
self.status['CRYPTDB'] = True
else:
self.status['CRYPTDB'] = False
hnd.write(data)
finally:
hnd.close()
def __evaldebug(self,word, word_eol, userdata):
eval(compile(word_eol[1],'develeval','exec'))
return xchat.EAT_ALL
def set_dbload(self,word, word_eol, userdata):
self.loadDB()
return xchat.EAT_ALL
def set_dbpass(self,word, word_eol, userdata):
xchat.command('GETSTR "" "SET fishcrypt_passpre" "New Password"')
return xchat.EAT_ALL
## set keydb passwd
def settings(self,word, word_eol, userdata):
fishonly = False
if len(word) == 2:
if word[1].upper() == "FISHCRYPT":
fishonly = True
if len(word) < 2 or fishonly:
## not for us
#print "fishcrypt_pass%s%s%s: \003%r" % (COLOR['blue'],"."*16,COLOR['green'],self.status['DBPASSWD'])
for key in self.config:
keyname = "%s%s" % (key,"."*20)
print "\00312%.29s: %s" % (keyname,str(self.config[key]))
if fishonly:
return xchat.EAT_ALL
return xchat.EAT_NONE
if word[1] == "fishcrypt_passpre":
if len(word) == 2:
self.status['CHKPW'] = ""
else:
self.status['CHKPW'] = word_eol[2]
xchat.command('GETSTR "" "SET fishcrypt_pass" "Repeat the Password"')
return xchat.EAT_ALL
if word[1] == "fishcrypt_pass":
if len(word) == 2:
if self.status['CHKPW'] <> "" and self.status['CHKPW'] <> None:
print "Passwords don't match"
self.status['CHKPW'] = None
return xchat.EAT_ALL
self.status['DBPASSWD'] = None
print "%sPassword removed and Key Storage decrypted" % (COLOR['dred'],)
print "%sWarning Keys are plaintext" % (COLOR['dred'],)
else:
if self.status['CHKPW'] <> None and self.status['CHKPW'] <> word_eol[2]:
print "Passwords don't match"
self.status['CHKPW'] = None
return xchat.EAT_ALL
if len(word_eol[2]) < 8 or len(word_eol[2]) > 56:
print "Passwords must be between 8 and 56 chars"
self.status['CHKPW'] = None
return xchat.EAT_ALL
self.status['DBPASSWD'] = word_eol[2]
## don't show the pw on console if set per GETSTR
if self.status['CHKPW'] == None:
print "%sPassword for Key Storage encryption set to %r" % (COLOR['dred'],self.status['DBPASSWD'])
else:
print "%sKey Storage encrypted" % (COLOR['dred'])
self.status['CHKPW'] = None
self.saveDB()
return xchat.EAT_ALL
if word[1] == "fishcrypt_passload":
if len(word) > 2:
if len(word_eol[2]) < 8 or len(word_eol[2]) > 56:
print "Password not between 8 and 56 chars"
else:
self.status['DBPASSWD'] = word_eol[2]
self.loadDB()
else:
print "Key Storage Not loaded"
self.status['DBPASSWD'] = None
return xchat.EAT_ALL
key = word[1].upper()
if key in self.config.keys():
if len(word) <3:
keyname = "%s%s" % (key,"."*20)
print "\00312%.29s: %s" % (keyname,str(self.config[key]))
else:
try:
if type(self.config[key]) == bool:
self.config[key] = bool(word[2] in ONMODES)
else:
self.config[key] = type(self.config[key])(word_eol[2])
print "\0035Set %r to %r" % (key,word_eol[2])
self.saveDB()
except ValueError:
print "\0034Invalid Config Value %r for %s" % (word_eol[2],key)
return xchat.EAT_ALL
return xchat.EAT_NONE
## incoming notice received
def on_notice(self,word, word_eol, userdata):
## check if this is not allready processed
if self.__chk_proc():
return xchat.EAT_NONE
## check if DH Key Exchange
if word_eol[3].startswith(':DH1080_FINISH'):
return self.dh1080_finish(word, word_eol, userdata)
elif word_eol[3].startswith(':DH1080_INIT'):
return self.dh1080_init(word, word_eol, userdata)
## check for encrypted Notice
elif word_eol[3].startswith('::+OK ') or word_eol[3].startswith('::mcps '):
## rewrite data to pass to default inMessage function
## change full ident to nick only
nick = self.get_nick(word[0])
target = word[2]
speaker = nick
## strip :: from message
message = word_eol[3][2:]
if target.startswith("#"):
id = self.get_id()
speaker = "## %s" % speaker
else:
id = self.get_id(nick=nick)
#print "DEBUG(crypt): key: %r word: %r" % (id,word,)
key = self.find_key(id)
## if no key found exit
if not key:
return xchat.EAT_NONE
## decrypt the message
try:
sndmessage = self.decrypt(key,message)
except:
sndmessage = None
isCBC=0
if message.startswith("+OK *"):
isCBC=1
failcol = ""
## if decryption was possible check for invalid chars
if sndmessage:
try:
message = sndmessage.decode("UTF8").encode("UTF8")
## mark nick for encrypted msgg
speaker = "%s %s" % ("°"*(1+isCBC),speaker)
except UnicodeError:
try:
message = unicode(sndmessage,encoding='iso8859-1',errors='ignore').encode('UTF8')
## mark nick for encrypted msgg
speaker = "%s %s" % ("°"*(1+isCBC),speaker)
except:
raise
## send the message to local xchat
#self.emit_print(userdata,speaker,message)
#return xchat.EAT_XCHAT
except:
## mark nick with a question mark
speaker = "?%s" % (speaker)
failcol = "\003"
else:
failcol = "\003"
## mark the message with \003, it failed to be processed and there for the \003+OK will no longer be excepted as encrypted so it wont loop
self.emit_print(userdata,speaker,"%s%s" % (failcol,message))
return xchat.EAT_XCHAT
# return self.inMessage([nick,msg], ["%s %s" % (nick,msg),msg], userdata)
## ignore everything else
else:
#print "DEBUG: %r %r %r" % (word, word_eol, userdata)
return xchat.EAT_NONE
## local notice send messages
def on_notice_send(self,word, word_eol, userdata):
## get current nick
target = xchat.get_context().get_info('nick')
#print "DEBUG_notice_send: %r - %r - %r %r" % (word,word_eol,userdata,nick)
## check if this is not allready processed
if self.__chk_proc(target=target):
return xchat.EAT_NONE
## get the speakers nick only from full ident
speaker = self.get_nick(word[0])
## strip first : from notice
message = word_eol[1][1:]
if message.startswith('+OK ') or message.startswith('mcps '):
## get the key id from the speaker
id = self.get_id(nick=speaker)
key = self.find_key(id)
## if no key available for the speaker exit
if not key:
return xchat.EAT_NONE
## decrypt the message
sndmessage = self.decrypt(key,message)
isCBC = 0
if message.startswith("+OK *"):
isCBC = 1
if not target.startswith("#"):
## if we receive a messge with CBC enabled we asume the partner can also except it so activate it
key.cbc_mode = True
## if decryption was possible check for invalid chars
if sndmessage:
try:
message = sndmessage.decode("UTF8").encode("UTF8")
## mark nick for encrypted msgg
speaker = "%s %s" % ("°"*(1+isCBC),speaker)
except:
## mark nick with a question mark
speaker = "?%s" % (speaker)
## send original message because invalid chars
message = message
## send the message back to incoming notice but with locked target status so it will not be processed again
self.emit_print("Notice Send",speaker,message,target=target)
return xchat.EAT_XCHAT
return xchat.EAT_NONE
## incoming messages
def inMessage(self,word, word_eol, userdata):
## if message is allready processed ignore
if self.__chk_proc() or len(word_eol) < 2:
return xchat.EAT_PLUGIN
speaker = word[0]
message = word_eol[1]
#print "DEBUG(INMsg): %r - %r - %r" % (word,word_eol,userdata)
# if there is mode char, remove it from the message
if len(word_eol) >= 3:
#message = message[ : -(len(word_eol[2]) + 1)]
message = message[:-2]
## check if message is crypted
if message.startswith('+OK ') or message.startswith('mcps '):
target = None
if userdata == "Private Message":
target = speaker
id = self.get_id(nick=target)
target,network = id
key = self.find_key(id)
## if no key found exit
if not key:
return xchat.EAT_NONE
## decrypt the message
try:
sndmessage = self.decrypt(key,message)
except:
sndmessage = None
isCBC=0
if message.startswith("+OK *"):
isCBC=1
if not target.startswith("#"):
## if we receive a messge with CBC enabled we asume the partner can also except it so activate it
key.cbc_mode = True
failcol = ""
## if decryption was possible check for invalid chars
if sndmessage:
try:
message = sndmessage.decode("UTF8").encode("UTF8")
## mark nick for encrypted msgg
speaker = "%s %s" % ("°"*(1+isCBC),speaker)
except UnicodeError:
try:
message = unicode(sndmessage,encoding='iso8859-1',errors='ignore').encode('UTF8')
## mark nick for encrypted msgg
speaker = "%s %s" % ("°"*(1+isCBC),speaker)
except:
raise
## send the message to local xchat
#self.emit_print(userdata,speaker,message)
#return xchat.EAT_XCHAT
except:
## mark nick with a question mark
speaker = "?%s" % (speaker)
failcol = "\003"
else:
failcol = "\003"
## mark the message with \003, it failed to be processed and there for the \003+OK will no longer be excepted as encrypted so it wont loop
self.emit_print(userdata,speaker,"%s%s" % (failcol,message))
return xchat.EAT_ALL
return xchat.EAT_NONE
def decrypt(self,key,msg):
## check for CBC
if 3 <= msg.find(' *') <= 4:
decrypt_clz = BlowfishCBC
decrypt_func = mircryption_cbc_unpack
else:
decrypt_clz = Blowfish
decrypt_func = blowcrypt_unpack
try:
b = decrypt_clz(key.key)