/usr/share/weechat/ruby/challengeauth.rb 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 | # Copyright (c) 2013 Dominik Honnef <dominikh@fork-bomb.org>
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# History:
# 2013-04-20, Dominik Honnef
# version 0.0.1: initial version
require "openssl"
QBot = "Q@CServe.quakenet.org"
QBotHost = "Q!TheQBot@CServe.quakenet.org"
Request = Struct.new(:username, :hash)
def weechat_init
@requests = {}
Weechat.register("challengeauth",
"Dominik Honnef",
"0.0.1",
"MIT",
"Securely authenticate with QuakeNet by using CHALLENGEAUTH",
"",
"")
Weechat.hook_command("challengeauth",
"Authenticate with Q using CHALLENGEAUTH",
"[username] [password]",
"",
"",
"challengeauth",
"")
Weechat.hook_modifier("irc_in_notice", "challenge_notice", "")
return Weechat::WEECHAT_RC_OK
end
def calculate_q_hash(username, hash, challenge)
username = username.tr("A-Z[]\\\\^", "a-z{}|~")
key = OpenSSL::Digest::SHA256.hexdigest("#{username}:#{hash}")
return OpenSSL::HMAC.hexdigest("SHA256", key, challenge)
end
def get_server_buffer(server)
Weechat.buffer_search("irc", "server." + server)
end
def challengeauth(data, buffer, args)
plugin = Weechat.buffer_get_string(buffer, "localvar_plugin")
if plugin != "irc"
Weechat.print(buffer, "/challengeauth only works for IRC buffers.")
return Weechat.WEECHAT_RC_ERROR
end
server = Weechat.buffer_get_string(buffer, "localvar_server")
args = args.split(" ", 2)
username = args[0]
password = args[1]
hash = OpenSSL::Digest::SHA256.hexdigest(password[0, 10])
@requests[server] = Request.new(username, hash)
server_buffer = get_server_buffer(server)
Weechat.print(server_buffer, "Authenticating as #{username}...")
Weechat.command(server_buffer, "/quote PRIVMSG #{QBot} :CHALLENGE")
return Weechat::WEECHAT_RC_OK
end
def challenge_notice(modifier, data, server, line)
return line unless @requests.has_key?(server)
parts = line.split(" ")
return line unless parts.size > 5
host = parts[0][1..-1]
command = parts[3][1..-1]
challenge = parts[4]
return line if host != QBotHost || command != "CHALLENGE"
request = @requests[server]
response = calculate_q_hash(request.username, request.hash, challenge)
server_buffer = get_server_buffer(server)
Weechat.print(server_buffer, "Sending challengeauth for #{request.username}...")
Weechat.command(server_buffer,
"/quote PRIVMSG %s :CHALLENGEAUTH %s %s HMAC-SHA-256" % [QBot, request.username, response])
@requests.delete(server)
return line
end
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