mirror of
https://github.com/chocolate-doom/master-server.git
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175 lines
4.9 KiB
Python
Executable file
175 lines
4.9 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Copyright(C) 2010 Simon Howard
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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#
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#
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# Test script for querying the master server.
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#
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import socket
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import sys
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import struct
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import simplejson
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NET_MASTER_PACKET_TYPE_ADD = 0
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NET_MASTER_PACKET_TYPE_ADD_RESPONSE = 1
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NET_MASTER_PACKET_TYPE_QUERY = 2
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NET_MASTER_PACKET_TYPE_QUERY_RESPONSE = 3
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NET_MASTER_PACKET_TYPE_GET_METADATA = 4
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NET_MASTER_PACKET_TYPE_GET_METADATA_RESPONSE = 5
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UDP_PORT = 2342
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def send_message(sock, addr, message_type, payload=None):
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header = struct.pack(">h", message_type)
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packet = header
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if payload is not None:
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packet += payload
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sock.sendto(packet, addr)
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def get_response(sock, addr, message_type):
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""" Wait for a response of the specified type to be received. """
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while True:
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packet, remote_addr = sock.recvfrom(1024)
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if remote_addr == addr:
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type, = struct.unpack(">h", packet[0:2])
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if type != message_type:
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raise Exception("Wrong type of packet received: %i != %i" %
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(type, message_type))
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return packet[2:]
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print "Rxed from %s, expected %s" % (remote_addr, addr)
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def read_string(packet):
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terminator = struct.pack("b", 0)
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strlen = packet.index(terminator)
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result, = struct.unpack("%ss" % strlen, packet[0:strlen])
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return packet[strlen + 1:], result
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def add_to_master(addr_str):
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""" Add self to master at specified IP address. """
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addr = (socket.gethostbyname(addr_str), UDP_PORT)
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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# Send request
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print "Sending request to master at %s" % str(addr)
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send_message(sock, addr, NET_MASTER_PACKET_TYPE_ADD)
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# Wait for response.
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print "Waiting for response..."
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response = get_response(sock, addr, NET_MASTER_PACKET_TYPE_ADD_RESPONSE)
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success, = struct.unpack(">h", response)
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if not success:
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raise Exception("Address not successfully added to master.")
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print "Address added to master."
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def decode_string_list(packet):
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""" Decode binary data containing NUL-terminated strings. """
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strings = []
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while len(packet) > 0:
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packet, string = read_string(packet)
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strings.append(string)
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return strings
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def query_master(addr_str):
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""" Query a master server for its list of server IP addresses. """
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addr = (socket.gethostbyname(addr_str), UDP_PORT)
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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# Send request
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print "Sending query to master at %s" % str(addr)
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send_message(sock, addr, NET_MASTER_PACKET_TYPE_QUERY)
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# Receive response
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print "Waiting for response..."
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response = get_response(sock, addr, NET_MASTER_PACKET_TYPE_QUERY_RESPONSE)
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servers = decode_string_list(response)
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print "%i servers" % len(servers)
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for s in servers:
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print "\t%s" % s
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def get_metadata(addr_str):
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""" Query a master server for metadata about its servers. """
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addr = (socket.gethostbyname(addr_str), UDP_PORT)
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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# Send request
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print "Sending metadata query to master at %s" % str(addr)
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send_message(sock, addr, NET_MASTER_PACKET_TYPE_GET_METADATA)
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# Receive response
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print "Waiting for response..."
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response = get_response(sock, addr, NET_MASTER_PACKET_TYPE_GET_METADATA_RESPONSE)
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servers = decode_string_list(response)
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print "%i servers" % len(servers)
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for json in servers:
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metadata = simplejson.loads(json)
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print "\tServer: %s:%i" % (metadata["address"], metadata["port"])
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print "\t\tAge: %i seconds" % metadata["age"]
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print "\t\tName: %s" % metadata["name"]
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print "\t\tVersion: %s" % metadata["version"]
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print "\t\tMax. players: %i" % metadata["max_players"]
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if len(sys.argv) > 2 and sys.argv[1] == "query":
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query_master(sys.argv[2])
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elif len(sys.argv) > 2 and sys.argv[1] == "add":
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add_to_master(sys.argv[2])
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elif len(sys.argv) > 2 and sys.argv[1] == "get-metadata":
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get_metadata(sys.argv[2])
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else:
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print "Usage:"
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print "chocolate-master-test.py query <address>"
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print "chocolate-master-test.py add <address>"
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print "chocolate-master-test.py get-metadata <address>"
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