Sha256: 88acb8197547f76b5e04ba9acba82b91c659682b1ac9353293e6dc28f5066f2b
Contents?: true
Size: 1.75 KB
Versions: 8
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Stored size: 1.75 KB
Contents
# -*- coding: binary -*-
module Rex
module Proto
##
#
# Quake 3 protocol, taken from ftp://ftp.idsoftware.com/idstuff/quake3/docs/server.txt
#
##
module Quake
HEADER = 0xFFFFFFFF
def decode_message(message)
# minimum size is header (4) + <command> + <stuff>
return if message.length < 7
header = message.unpack('N')[0]
return if header != HEADER
message[4, message.length]
end
def encode_message(payload)
[HEADER].pack('N') + payload
end
def getstatus
encode_message('getstatus')
end
def getinfo
encode_message('getinfo')
end
def decode_infostring(infostring)
# decode an "infostring", which is just a (supposedly) quoted string of tokens separated
# by backslashes, generally terminated with a newline
token_re = /([^\\]+)\\([^\\]+)/
return nil unless infostring =~ token_re
# remove possibly present leading/trailing double quote
infostring.gsub!(/(?:^"|"$)/, '')
# remove the trailing \n, if present
infostring.gsub!(/\n$/, '')
# split on backslashes and group into key value pairs
infohash = {}
infostring.scan(token_re).each do |kv|
infohash[kv.first] = kv.last
end
infohash
end
def decode_response(message, type)
resp = decode_message(message)
if /^print\n(?<error>.*)\n?/m =~ resp
# XXX: is there a better exception to throw here?
fail ::ArgumentError, "#{type} error: #{error}"
# why doesn't this work?
# elsif /^#{type}Response\n(?<infostring>.*)/m =~ resp
elsif resp =~ /^#{type}Response\n(.*)/m
decode_infostring(Regexp.last_match(1))
else
nil
end
end
def decode_status(message)
decode_response(message, 'status')
end
def decode_info(message)
decode_response(message, 'info')
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems