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1213 lines (934 loc) · 35.2 KB
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# -*- coding: utf-8 -*-
#
# Copyright (C) 2011-2022 David Flatz <david@upcs.at>
# Copyright (C) 2017-2020 Marcin Kurczewski <rr-@sakuya.pl>
# Copyright (C) 2017 Ricardo Ferreira <ricardo.sff@goatse.cx>
# Copyright (C) 2014 Charles Franklin <jakhead@gmail.com>
# Copyright (C) 2012 Markus Näsman <markus@botten.org>
# Copyright (C) 2009 Bjorn Edstrom <be@bjrn.se>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# NOTE: Blowfish and DH1080 implementation is licenced under a different
# license:
#
# Copyright (c) 2009, Bjorn Edstrom <be@bjrn.se>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
#
# Suggestions, Bugs, ...?
# https://github.com/freshprince/weechat-fish
#
# NOTE ABOUT DH1080:
# =================
#
# Diffie-Hellman key exchange assumes that you already have
# authenticated channels between Alice and Bob. Which means that Alice
# has to be sure that she is really talking to Bob and not to any man in
# the middle. But since the whole idea of FiSH is that you want to
# encrypt your communication on the IRC server whose operators you do
# not trust, there is no reliable way for Alice to tell if she really is
# talking to Bob. It could also be some rogue IRC admin impersonating
# Bob with a fake hostname and ident or even doing a MITM attack on
# DH1080. This means you can consider using DH1080 key exchange over
# IRC utterly broken in terms of security.
#
import re
import struct
import hashlib
import base64
import sys
from os import urandom
SCRIPT_NAME = "fish"
SCRIPT_AUTHOR = "David Flatz <david@upcs.at>"
SCRIPT_VERSION = "0.15"
SCRIPT_LICENSE = "GPL3"
SCRIPT_DESC = "FiSH for weechat"
CONFIG_FILE_NAME = SCRIPT_NAME
import_ok = True
try:
import weechat
except ImportError:
print("This script must be run under WeeChat.")
print("Get WeeChat now at: https://weechat.org/")
import_ok = False
try:
import Crypto.Cipher.Blowfish as CryptoBlowfish
except ImportError:
try:
import Cryptodome.Cipher.Blowfish as CryptoBlowfish
except ImportError:
print("Pycryptodome must be installed to use fish")
import_ok = False
#
# GLOBALS
#
fish_config_file = None
fish_config_section = {}
fish_config_option = {}
fish_keys = {}
fish_cyphers = {}
fish_DH1080ctx = {}
fish_encryption_announced = {}
fish_secure_key = ""
fish_secure_cipher = None
#
# CONFIG
#
def fish_config_reload_cb(data, config_file):
return weechat.config_reload(config_file)
def fish_config_keys_read_cb(data, config_file, section_name, option_name,
value):
global fish_keys
option = weechat.config_new_option(
config_file, section_name, option_name, "string", "key", "", 0, 0,
"", value, 0, "", "", "", "", "", "")
if not option:
return weechat.WEECHAT_CONFIG_OPTION_SET_ERROR
fish_keys[option_name] = value
return weechat.WEECHAT_CONFIG_OPTION_SET_OK_CHANGED
def fish_config_keys_write_cb(data, config_file, section_name):
global fish_keys, fish_secure_cipher
weechat.config_write_line(config_file, section_name, "")
for target, key in sorted(fish_keys.items()):
if fish_secure_cipher is not None:
weechat.config_write_line(
config_file, blowcrypt_pack(target.encode(), fish_secure_cipher),
blowcrypt_pack(key.encode(), fish_secure_cipher))
else:
weechat.config_write_line(config_file, target, key)
return weechat.WEECHAT_RC_OK
def fish_config_init():
global fish_config_file, fish_config_section, fish_config_option
global fish_secure_cipher
fish_config_file = weechat.config_new(
CONFIG_FILE_NAME, "fish_config_reload_cb", "")
if not fish_config_file:
return
# look
fish_config_section["look"] = weechat.config_new_section(
fish_config_file, "look", 0, 0, "", "", "", "", "", "", "", "", "",
"")
if not fish_config_section["look"]:
weechat.config_free(fish_config_file)
return
fish_config_option["announce"] = weechat.config_new_option(
fish_config_file, fish_config_section["look"], "announce",
"boolean", "announce if messages are being encrypted or not", "",
0, 0, "on", "on", 0, "", "", "", "", "", "")
fish_config_option["marker"] = weechat.config_new_option(
fish_config_file, fish_config_section["look"], "marker",
"string", "marker for important FiSH messages", "", 0, 0,
"O<", "O<", 0, "", "", "", "", "", "")
fish_config_option["mark_position"] = weechat.config_new_option(
fish_config_file, fish_config_section["look"], "mark_position",
"integer",
"put marker for encrypted INCOMING messages at start or end",
"off|begin|end", 0, 2, "off", "off", 0, "", "", "", "", "", "")
fish_config_option["mark_encrypted"] = weechat.config_new_option(
fish_config_file, fish_config_section["look"], "mark_encrypted",
"string", "marker for encrypted INCOMING messages", "", 0, 0,
"*", "*", 0, "", "", "", "", "", "")
# color
fish_config_section["color"] = weechat.config_new_section(
fish_config_file, "color", 0, 0, "", "", "", "", "", "", "", "",
"", "")
if not fish_config_section["color"]:
weechat.config_free(fish_config_file)
return
fish_config_option["alert"] = weechat.config_new_option(
fish_config_file, fish_config_section["color"], "alert",
"color", "color for important FiSH message markers", "", 0, 0,
"lightblue", "lightblue", 0, "", "", "", "", "", "")
# secure
fish_config_section["secure"] = weechat.config_new_section(
fish_config_file, "secure", 0, 0, "", "", "", "", "", "", "", "",
"", "")
if not fish_config_section["secure"]:
weechat.config_free(fish_config_file)
return
fish_config_option["key"] = weechat.config_new_option(
fish_config_file, fish_config_section["secure"], "key",
"string", "key for securing blowfish keys", "", 0, 0, "", "",
0, "", "", "", "", "", "")
# keys
fish_config_section["keys"] = weechat.config_new_section(
fish_config_file, "keys", 0, 0, "fish_config_keys_read_cb", "",
"fish_config_keys_write_cb", "", "", "", "", "", "", "")
if not fish_config_section["keys"]:
weechat.config_free(fish_config_file)
return
def fish_config_read():
global fish_config_file
return weechat.config_read(fish_config_file)
def fish_config_write():
global fish_config_file
return weechat.config_write(fish_config_file)
##
# Blowfish and DH1080 Code:
##
#
# BLOWFISH
#
class Blowfish:
def __init__(self, key=None):
if key:
if len(key) > 72:
key = key[:72]
self.blowfish = CryptoBlowfish.new(
key.encode('utf-8'), CryptoBlowfish.MODE_ECB)
def decrypt(self, data):
return self.blowfish.decrypt(data)
def encrypt(self, data):
return self.blowfish.encrypt(data)
# XXX: Unstable.
def blowcrypt_b64encode(s):
"""A non-standard base64-encode."""
B64 = "./0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
res = ''
while s:
left, right = struct.unpack('>LL', s[:8])
for i in range(6):
res += B64[right & 0x3f]
right >>= 6
for i in range(6):
res += B64[left & 0x3f]
left >>= 6
s = s[8:]
return res
def blowcrypt_b64decode(s):
"""A non-standard base64-decode."""
B64 = "./0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
res = []
while s:
left, right = 0, 0
for i, p in enumerate(s[0:6]):
right |= B64.index(p) << (i * 6)
for i, p in enumerate(s[6:12]):
left |= B64.index(p) << (i * 6)
for i in range(0, 4):
res.append((left & (0xFF << ((3 - i) * 8))) >> ((3 - i) * 8))
for i in range(0, 4):
res.append((right & (0xFF << ((3 - i) * 8))) >> ((3 - i) * 8))
s = s[12:]
return bytes(res)
def padto(msg, length):
"""Pads 'msg' with zeroes until it's length is divisible by 'length'.
If the length of msg is already a multiple of 'length', does nothing."""
L = len(msg)
if L % length:
msg += b'\x00' * (length - L % length)
assert len(msg) % length == 0
return msg
def blowcrypt_pack(msg, cipher):
"""."""
return '+OK ' + blowcrypt_b64encode(cipher.encrypt(padto(msg, 8)))
def blowcrypt_unpack(msg, cipher, key):
"""."""
if not (msg.startswith('+OK ') or msg.startswith('mcps ')):
raise ValueError
_, rest = msg.split(' ', 1)
if rest.startswith('*'): # CBC mode
rest = rest[1:]
if len(rest) % 4:
rest += '=' * (4 - len(rest) % 4)
raw = base64.b64decode(rest)
iv = raw[:8]
raw = raw[8:]
cbcCipher = CryptoBlowfish.new(
key.encode('utf-8'), CryptoBlowfish.MODE_CBC, iv)
plain = cbcCipher.decrypt(padto(raw, 8))
else:
if len(rest) < 12:
raise ValueError
if not (len(rest) % 12) == 0:
rest = rest[:-(len(rest) % 12)]
try:
raw = blowcrypt_b64decode(padto(rest, 12))
except TypeError:
raise ValueError
if not raw:
raise ValueError
plain = cipher.decrypt(raw)
return plain.strip(b'\x00').replace(b'\n', b'')
#
# DH1080
#
g_dh1080 = 2
p_dh1080 = int('FBE1022E23D213E8ACFA9AE8B9DFAD'
'A3EA6B7AC7A7B7E95AB5EB2DF85892'
'1FEADE95E6AC7BE7DE6ADBAB8A783E'
'7AF7A7FA6A2B7BEB1E72EAE2B72F9F'
'A2BFB2A2EFBEFAC868BADB3E828FA8'
'BADFADA3E4CC1BE7E8AFE85E9698A7'
'83EB68FA07A77AB6AD7BEB618ACF9C'
'A2897EB28A6189EFA07AB99A8A7FA9'
'AE299EFA7BA66DEAFEFBEFBF0B7D8B', 16)
q_dh1080 = (p_dh1080 - 1) // 2
def dh1080_b64encode(s):
"""A non-standard base64-encode."""
b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
d = [0] * len(s) * 2
L = len(s) * 8
m = 0x80
i, j, k, t = 0, 0, 0, 0
while i < L:
if s[i >> 3] & m:
t |= 1
j += 1
m >>= 1
if not m:
m = 0x80
if not j % 6:
d[k] = b64[t]
t &= 0
k += 1
t <<= 1
t %= 0x100
#
i += 1
m = 5 - j % 6
t <<= m
t %= 0x100
if m:
d[k] = b64[t]
k += 1
d[k] = 0
res = ''
for q in d:
if q == 0:
break
res += q
return res
def dh1080_b64decode(s):
"""A non-standard base64-encode."""
b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
buf = [0] * 256
for i in range(64):
buf[ord(b64[i])] = i
L = len(s)
if L < 2:
raise ValueError
for i in reversed(list(range(L - 1))):
if buf[ord(s[i])] == 0:
L -= 1
else:
break
if L < 2:
raise ValueError
d = [0] * L
i, k = 0, 0
while True:
i += 1
if k + 1 < L:
d[i - 1] = buf[ord(s[k])] << 2
d[i - 1] %= 0x100
else:
break
k += 1
if k < L:
d[i - 1] |= buf[ord(s[k])] >> 4
else:
break
i += 1
if k + 1 < L:
d[i - 1] = buf[ord(s[k])] << 4
d[i - 1] %= 0x100
else:
break
k += 1
if k < L:
d[i - 1] |= buf[ord(s[k])] >> 2
else:
break
i += 1
if k + 1 < L:
d[i - 1] = buf[ord(s[k])] << 6
d[i - 1] %= 0x100
else:
break
k += 1
if k < L:
d[i - 1] |= buf[ord(s[k])] % 0x100
else:
break
k += 1
return bytes(d[0:i - 1])
def dh_validate_public(public, q, p):
"""See RFC 2631 section 2.1.5."""
return 1 == pow(public, q, p)
class DH1080Ctx:
"""DH1080 context."""
def __init__(self):
self.public = 0
self.private = 0
self.secret = 0
self.state = 0
bits = 1080
while True:
self.private = bytes2int(urandom(bits // 8))
self.public = pow(g_dh1080, self.private, p_dh1080)
if 2 <= self.public <= p_dh1080 - 1 and \
dh_validate_public(self.public, q_dh1080, p_dh1080) == 1:
break
def dh1080_pack(ctx):
"""."""
cmd = None
if ctx.state == 0:
ctx.state = 1
cmd = "DH1080_INIT "
else:
cmd = "DH1080_FINISH "
return cmd + dh1080_b64encode(int2bytes(ctx.public))
def dh1080_unpack(msg, ctx):
"""."""
if not msg.startswith("DH1080_"):
raise ValueError
if ctx.state == 0:
if not msg.startswith("DH1080_INIT "):
raise ValueError
ctx.state = 1
try:
cmd, public_raw = msg.split(' ', 1)
public = bytes2int(dh1080_b64decode(public_raw))
if not 1 < public < p_dh1080:
raise ValueError
ctx.secret = pow(public, ctx.private, p_dh1080)
except Exception:
raise ValueError
elif ctx.state == 1:
if not msg.startswith("DH1080_FINISH "):
raise ValueError
ctx.state = 1
try:
cmd, public_raw = msg.split(' ', 1)
public = bytes2int(dh1080_b64decode(public_raw))
if not 1 < public < p_dh1080:
raise ValueError
ctx.secret = pow(public, ctx.private, p_dh1080)
except Exception:
raise ValueError
return True
def dh1080_secret(ctx):
"""."""
if ctx.secret == 0:
raise ValueError
return dh1080_b64encode(sha256(int2bytes(ctx.secret)))
def bytes2int(b):
"""Variable length big endian to integer."""
return int.from_bytes(b, byteorder='big')
def int2bytes(n):
"""Integer to variable length big endian."""
return n.to_bytes((n.bit_length() + 7) // 8, byteorder='big')
def sha256(s):
"""sha256"""
return hashlib.sha256(s).digest()
##
# END Blowfish and DH1080 Code
##
#
# HOOKS
#
def fish_secure_key_cb(data, option, value):
global fish_secure_key, fish_secure_cipher
fish_secure_key = weechat.config_string(
weechat.config_get("fish.secure.key"))
if fish_secure_key == "":
fish_secure_cipher = None
return weechat.WEECHAT_RC_OK
if fish_secure_key[:6] == "${sec.":
decrypted = weechat.string_eval_expression(fish_secure_key, {}, {}, {})
if decrypted:
fish_secure_cipher = Blowfish(decrypted)
return weechat.WEECHAT_RC_OK
else:
weechat.config_option_set(fish_config_option["key"], "", 0)
weechat.prnt("", "Decrypt sec.conf first\n")
return weechat.WEECHAT_RC_OK
if fish_secure_key != "":
fish_secure_cipher = Blowfish(fish_secure_key)
return weechat.WEECHAT_RC_OK
def fish_modifier_in_notice_cb(data, modifier, server_name, string):
global fish_DH1080ctx, fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(
r"^((?:@[^ ]* )?:(.*?)!.*? NOTICE (.*?) :)"
r"((DH1080_INIT |DH1080_FINISH |\+OK |mcps )?.*)$",
string)
# match.group(0): message
# match.group(1): msg without payload
# match.group(2): source
# match.group(3): target
# match.group(4): msg
# match.group(5): "DH1080_INIT "|"DH1080_FINISH "|"+OK "|"mcps "
if not match or not match.group(5):
return string
if match.group(3) != weechat.info_get("irc_nick", server_name):
return string
target = "%s/%s" % (server_name, match.group(2))
targetl = ("%s/%s" % (server_name, match.group(2))).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (
server_name, match.group(2)))
if match.group(5) == "DH1080_FINISH " and targetl in fish_DH1080ctx:
if not dh1080_unpack(match.group(4), fish_DH1080ctx[targetl]):
fish_announce_unencrypted(buffer, target)
return string
fish_alert(buffer, "Key exchange for %s successful" % target)
fish_keys[targetl] = dh1080_secret(fish_DH1080ctx[targetl])
if targetl in fish_cyphers:
del fish_cyphers[targetl]
del fish_DH1080ctx[targetl]
return ""
if match.group(5) == "DH1080_INIT ":
fish_DH1080ctx[targetl] = DH1080Ctx()
msg = ' '.join(match.group(4).split()[0:2])
if not dh1080_unpack(msg, fish_DH1080ctx[targetl]):
fish_announce_unencrypted(buffer, target)
return string
reply = dh1080_pack(fish_DH1080ctx[targetl])
fish_alert(buffer, "Key exchange initiated by %s. Key set." % target)
weechat.command(buffer, "/mute -all notice %s %s" % (
match.group(2), reply))
fish_keys[targetl] = dh1080_secret(fish_DH1080ctx[targetl])
if targetl in fish_cyphers:
del fish_cyphers[targetl]
del fish_DH1080ctx[targetl]
return ""
if match.group(5) in ["+OK ", "mcps "]:
if targetl not in fish_keys:
fish_announce_unencrypted(buffer, target)
return string
key = fish_keys[targetl]
try:
if targetl not in fish_cyphers:
b = Blowfish(key)
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
clean = blowcrypt_unpack(match.group(4), b, key)
fish_announce_encrypted(buffer, target)
return b"%s%s" % (
match.group(1).encode(), fish_msg_w_marker(clean))
except Exception as e:
fish_announce_unencrypted(buffer, target)
raise e
fish_announce_unencrypted(buffer, target)
return string
def fish_modifier_in_privmsg_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(
r"^((?:@[^ ]* )?:(.*?)!.*? PRIVMSG (.*?) :)(\x01ACTION )?"
r"((\+OK |mcps )?.*?)(\x01)?$",
string)
# match.group(0): message
# match.group(1): msg without payload
# match.group(2): source
# match.group(3): target
# match.group(4): action
# match.group(5): msg
# match.group(6): "+OK "|"mcps "
if not match:
return string
if match.group(3) == weechat.info_get("irc_nick", server_name):
dest = match.group(2)
else:
dest = match.group(3)
target = "%s/%s" % (server_name, dest)
targetl = ("%s/%s" % (server_name, dest)).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (server_name, dest))
if not match.group(6):
fish_announce_unencrypted(buffer, target)
return string
if targetl not in fish_keys:
fish_announce_unencrypted(buffer, target)
return string
key = fish_keys[targetl]
try:
if targetl not in fish_cyphers:
b = Blowfish(key)
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
clean = blowcrypt_unpack(match.group(5), b, key)
fish_announce_encrypted(buffer, target)
if not match.group(4):
return b'%s%s' % (
match.group(1).encode(), fish_msg_w_marker(clean))
return b"%s%s%s\x01" % (
match.group(1).encode(), match.group(4).encode(),
fish_msg_w_marker(clean))
except Exception as e:
fish_announce_unencrypted(buffer, target)
raise e
def fish_modifier_in_topic_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(r"^((?:@[^ ]* )?:.*?!.*? TOPIC (.*?) :)((\+OK |mcps )?.*)$", string)
# match.group(0): message
# match.group(1): msg without payload
# match.group(2): channel
# match.group(3): topic
# match.group(4): "+OK "|"mcps "
if not match:
return string
target = "%s/%s" % (server_name, match.group(2))
targetl = ("%s/%s" % (server_name, match.group(2))).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (
server_name, match.group(2)))
if targetl not in fish_keys or not match.group(4):
fish_announce_unencrypted(buffer, target)
return string
key = fish_keys[targetl]
try:
if targetl not in fish_cyphers:
b = Blowfish(key)
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
clean = blowcrypt_unpack(match.group(3), b, key)
fish_announce_encrypted(buffer, target)
return b"%s%s" % (match.group(1).encode(), fish_msg_w_marker(clean))
except Exception as e:
fish_announce_unencrypted(buffer, target)
raise e
def fish_modifier_in_332_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(r"^((?:@[^ ]* )?:.*? 332 .*? (.*?) :)((\+OK |mcps )?.*)$", string)
if not match:
return string
target = "%s/%s" % (server_name, match.group(2))
targetl = ("%s/%s" % (server_name, match.group(2))).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (
server_name, match.group(2)))
if targetl not in fish_keys or not match.group(4):
fish_announce_unencrypted(buffer, target)
return string
key = fish_keys[targetl]
try:
if targetl not in fish_cyphers:
b = Blowfish(key)
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
clean = blowcrypt_unpack(match.group(3), b, key)
fish_announce_encrypted(buffer, target)
return b"%s%s" % (match.group(1).encode(), fish_msg_w_marker(clean))
except Exception as e:
fish_announce_unencrypted(buffer, target)
raise e
def fish_modifier_out_privmsg_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(r"^(PRIVMSG (.*?) :)(.*)$", string)
if not match:
return string
target = "%s/%s" % (server_name, match.group(2))
targetl = ("%s/%s" % (server_name, match.group(2))).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (
server_name, match.group(2)))
if targetl not in fish_keys:
fish_announce_unencrypted(buffer, target)
return string
if targetl not in fish_cyphers:
b = Blowfish(fish_keys[targetl])
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
cypher = blowcrypt_pack(fish_msg_wo_marker(match.group(3)).encode(), b)
fish_announce_encrypted(buffer, target)
return "%s%s" % (match.group(1), cypher)
def fish_modifier_out_topic_cb(data, modifier, server_name, string):
global fish_keys, fish_cyphers
if type(string) is bytes:
return string
match = re.match(r"^(TOPIC (.*?) :)(.*)$", string)
if not match:
return string
if not match.group(3):
return string
target = "%s/%s" % (server_name, match.group(2))
targetl = ("%s/%s" % (server_name, match.group(2))).lower()
buffer = weechat.info_get("irc_buffer", "%s,%s" % (
server_name, match.group(2)))
if targetl not in fish_keys:
fish_announce_unencrypted(buffer, target)
return string
if targetl not in fish_cyphers:
b = Blowfish(fish_keys[targetl])
fish_cyphers[targetl] = b
else:
b = fish_cyphers[targetl]
cypher = blowcrypt_pack(match.group(3).encode(), b)
fish_announce_encrypted(buffer, target)
return "%s%s" % (match.group(1), cypher)
def fish_modifier_input_text(data, modifier, server_name, string):
if weechat.string_is_command_char(string):
return string
buffer = weechat.current_buffer()
name = weechat.buffer_get_string(buffer, "name")
target = name.replace(".", "/")
targetl = target.lower()
if targetl not in fish_keys:
return string
return "%s" % (fish_msg_w_marker(string.encode()).decode())
def fish_unload_cb():
fish_config_write()
return weechat.WEECHAT_RC_OK
#
# COMMANDS
#
def fish_cmd_blowkey(data, buffer, args):
global fish_keys, fish_cyphers, fish_DH1080ctx, fish_config_option
global fish_secure_cipher
if args == "" or args == "list":
fish_list_keys(buffer)
return weechat.WEECHAT_RC_OK
elif args == "genkey":
fish_secure_genkey(buffer)
return weechat.WEECHAT_RC_OK
argv = args.split(" ")
if (len(argv) > 2 and argv[1] == "-server"):
server_name = argv[2]
del argv[2]
del argv[1]
pos = args.find(" ")
pos = args.find(" ", pos + 1)
args = args[pos+1:]
else:
server_name = weechat.buffer_get_string(buffer, "localvar_server")
buffer_type = weechat.buffer_get_string(buffer, "localvar_type")
# if no target user has been specified grab the one from the buffer if it
# is private
if argv[0] == "exchange" and len(argv) == 1 and buffer_type == "private":
target_user = weechat.buffer_get_string(buffer, "localvar_channel")
elif (argv[0] == "set" and
(buffer_type == "private" or buffer_type == "channel") and
len(argv) == 2):
target_user = weechat.buffer_get_string(buffer, "localvar_channel")
elif len(argv) < 2:
return weechat.WEECHAT_RC_ERROR
else:
target_user = argv[1]
argv2eol = ""
pos = args.find(" ")
if pos:
pos = args.find(" ", pos + 1)
if pos > 0:
argv2eol = args[pos + 1:]
else:
argv2eol = args[args.find(" ") + 1:]
target = "%s/%s" % (server_name, target_user)
targetl = ("%s/%s" % (server_name, target_user)).lower()
if argv[0] == "set":
fish_keys[targetl] = argv2eol
if targetl in fish_cyphers:
del fish_cyphers[targetl]
weechat.prnt(buffer, "set key for %s to %s" % (target, argv2eol))
return weechat.WEECHAT_RC_OK
if argv[0] == "remove":
if not len(argv) == 2:
return weechat.WEECHAT_RC_ERROR
if targetl not in fish_keys:
return weechat.WEECHAT_RC_ERROR
del fish_keys[targetl]
if targetl in fish_cyphers:
del fish_cyphers[targetl]
weechat.prnt(buffer, "removed key for %s" % target)
return weechat.WEECHAT_RC_OK
if argv[0] == "exchange":
if server_name == "":
return weechat.WEECHAT_RC_ERROR
weechat.prnt(buffer, "Initiating DH1080 Exchange with %s" % target)
fish_DH1080ctx[targetl] = DH1080Ctx()
msg = dh1080_pack(fish_DH1080ctx[targetl])
weechat.command(buffer, "/mute -all notice -server %s %s %s" % (
server_name, target_user, msg))
return weechat.WEECHAT_RC_OK
return weechat.WEECHAT_RC_ERROR
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