/usr/share/weechat/python/dcc_antispam.py is in weechat-scripts 20180330-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | # -*- coding: utf-8 -*-
#
# Copyright (C) 2010-2012 Sebastien Helleu <flashcode@flashtux.org>
#
# 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/>.
#
#
# Antispam for DCC file/chat requests.
# (this script requires WeeChat 0.3.0 or newer)
#
# History:
#
# 2012-01-03, Sebastien Helleu <flashcode@flashtux.org>:
# version 0.2: make script compatible with Python 3.x
# 2010-02-09, Sebastien Helleu <flashcode@flashtux.org>:
# version 0.1: initial release
#
import_ok = True
try:
import weechat
except:
print("This script must be run under WeeChat.")
print("Get WeeChat now at: http://www.weechat.org/")
import_ok = False
import re
SCRIPT_NAME = "dcc_antispam"
SCRIPT_AUTHOR = "Sebastien Helleu <flashcode@flashtux.org>"
SCRIPT_VERSION = "0.2"
SCRIPT_LICENSE = "GPL3"
SCRIPT_DESC = "Antispam for DCC file/chat requests"
# script options
dcc_settings = {
"display" : "on", # display blocked dcc on core buffer?
# comma separated lists:
"server" : "", # restricts anti-spam on these servers (internal names)
"name" : "", # list of names (regex) to block
"ip" : "^0.0.0.0", # list of IPs (regex) to block
"port" : "^0$,^\D+$", # list of ports (regex) to block
"size" : "0", # list of sizes to block (should be "0" or empty string)
}
dcc_settings_regex_allowed = [ "name", "ip", "port" ]
dcc_settings_regex = {}
# DCC message looks like:
# SEND:
# :nick!user@host.com PRIVMSG mynick :\01DCC SEND filename.txt 2130706433 40017 123456\01
# \----------/ \--------/ \---/ \----/
# name ip port size
# CHAT:
# :nick!user@host.com PRIVMSG mynick :\01DCC CHAT chat 2130706433 40017\01
# \--------/ \---/
# ip port
dcc_regex_dcc_send = re.compile(r"\S+ PRIVMSG \S+ :\01DCC (SEND|CHAT) ([^\01]+)\01")
def dcc_is_blocked(dcc):
""" Return True if dcc is blocked, False if dcc is not blocked. """
global dcc_settings_regex
for key, value in dcc.items():
if key in dcc_settings_regex:
if weechat.config_get_plugin(key) != "":
for regex in dcc_settings_regex[key]:
if regex.search(value):
return True
else:
for str in weechat.config_get_plugin(key).split(","):
if value == str:
return True
# dcc NOT blocked
return False
def dcc_parse(type, message):
""" Parse dcc request, return dict with values. """
dcc = {}
for arg in [ "size", "port", "ip" ]:
if type == "CHAT" and arg == "size":
continue;
pos = message.rfind(" ")
if pos < 0:
# problem with parsing, dcc is not blocked
return None
dcc[arg] = message[pos+1:]
message = message[:pos]
if type == "SEND":
if message.startswith("\"") and message.endswith("\""):
message = message[1:len(message)-1]
dcc["name"] = message
ip = int(dcc["ip"])
dcc["ip"] = "%d.%d.%d.%d" % (ip >> 24, (ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff)
return dcc
def dcc_privmsg_modifier_cb(data, modifier, modifier_data, string):
""" Modifier callback for IRC PRIVMSG messages. """
match = dcc_regex_dcc_send.match(string)
if match:
server = weechat.config_get_plugin("server")
if server == "" or modifier_data in server.split(","):
dcctype = match.group(1)
dcc = dcc_parse(dcctype, match.group(2))
if dcc and dcc_is_blocked(dcc):
if weechat.config_get_plugin("display") == "on":
if dcctype == "CHAT":
weechat.prnt("", "%s: dcc blocked (chat from %s, ip: %s, port: %s)" %
(SCRIPT_NAME, weechat.info_get("irc_nick_from_host", string),
dcc["ip"], dcc["port"]))
else:
weechat.prnt("", "%s: dcc blocked (file: '%s' from %s, size: %s bytes, ip: %s, port: %s)" %
(SCRIPT_NAME, dcc["name"], weechat.info_get("irc_nick_from_host", string),
dcc["size"], dcc["ip"], dcc["port"]))
return ""
return string
def dcc_build_regex():
""" Build regex for all options. """
global dcc_settings_regex_allowed, dcc_settings_regex
for key in dcc_settings_regex_allowed:
dcc_settings_regex[key] = []
try:
for string in weechat.config_get_plugin(key).split(","):
dcc_settings_regex[key].append(re.compile(string, re.I))
except:
weechat.prnt("", "%s%s: error compiling regex in '%s' (option %s)" %
(weechat.prefix("error"), SCRIPT_NAME,
weechat.config_get_plugin(key), key))
dcc_settings_regex[key] = []
def dcc_config_cb(data, option, value):
""" Callback called when a script option is changed. """
dcc_build_regex()
return weechat.WEECHAT_RC_OK
if __name__ == "__main__" and import_ok:
if weechat.register(SCRIPT_NAME, SCRIPT_AUTHOR, SCRIPT_VERSION,
SCRIPT_LICENSE, SCRIPT_DESC,
"", ""):
# set default settings
for option, default_value in dcc_settings.items():
if not weechat.config_is_set_plugin(option):
weechat.config_set_plugin(option, default_value)
dcc_build_regex()
# modifier for privmsg messages
weechat.hook_modifier("irc_in_privmsg", "dcc_privmsg_modifier_cb", "")
# config
weechat.hook_config("plugins.var.python." + SCRIPT_NAME + ".*", "dcc_config_cb", "")
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