gistfile1.py

import time
import urlparse
import BaseHTTPServer
import os
import traceback

#address = ("0.0.0.0", 80)
address = ("127.0.0.1", 9020)

class PokemonDW(object):
	def start(self):
		httpd = PokemonDWHTTPServer((address[0], address[1]), PokemonDWHTTPServerHandler)
		print "Now listening for connections on %s:%d..." % (address[0], address[1])
		httpd.serve_forever()

class PokemonDWHTTPServer(BaseHTTPServer.HTTPServer):
	def __init__(self, server_address, RequestHandlerClass):
		self.db = None
		BaseHTTPServer.HTTPServer.__init__(self, server_address, RequestHandlerClass)

class PokemonDWHTTPServerHandler(BaseHTTPServer.BaseHTTPRequestHandler):
	def version_string(self):
		return "Nintendo Wii (http)"

	def do_GET(self):
		try:
			self.send_response(200)
			self.send_header("Content-type", "text/plain")

			ret = ""
			params = self.str_to_dict(self.path)
				
			if "p" in params:
				print "Received %s command" % params['p']
				
				if params['p'] == "sleepily.bitlist":
					# 21d890e
					# \x00 - Success?
					# \x02 - ?
					# Error codes: \xf0\xff\x00\x00, \xf1\xff\x00\x00, \xf2\xff\x00\x00
					# Append 0x7c padding bytes followed by 0x80 bytes for the bitlist
					ret = "\x00\x00\x00\x00" + ("\x00" * 0x7c) + ("\xff" * 0x80)
				
				if params['p'] == "savedata.getbw":
					# 021C2784
					# \x00 - Get save data. (Error: "The save data could not be accessed.")
					# \x05 - "Please use Game Sync to tuck in a Pokemon in Pokemon Black Version or Pokemon White Version. You can use the Memory Link after tucking in a Pokemon."
					# \x08 - "That Game Sync ID is invalid."
					# \x0a - "That Game Sync ID is not from Pokemon Black Version or Pokemon White Version."
					# Where does it read the save data?
					ret = "\x00\x00\x00\x00"
					
				elif params['p'] == "account.playstatus":
					# 21D87B0
					# 21D8670
					# \x00 - Success + 0x7c padding + command code + extra data?
					# The command codes only work if is sleeping.
					# Command codes:
					#	\x00 - Wake up normally
					#	\x01 - "This Pokemon is not dreaming yet."
					#	\x02 - "This Pokemon is dreaming."
					#	\x03 - Wake up + download new changes from server
					#	\x04 - Wake up normally?
					# \x05 - ? (Does not work with sleeping pokemon)
					# \x08 - Leads to account.create.upload
					ret = "\x00\x00\x00\x00" + ("\x00" * 0x7c) + ("\x03\x00\x00\x00") + ("\x00" * 0x40)
					
				elif params['p'] == "savedata.download":
					# 21D7E78
					# Must start with \x00\x00\x00\x00 or it'll error
					ret = "\x00\x00\x00\x00" + ("\x00" * 0x7c)
					#ret += "\x00\x00\x00\x00"  # Stops parsing data if \xff\xff\xff\xff. savedata.download.finish?
					ret += "\xff\xff\xff\xff"  # Stops parsing data if \xff\xff\xff\xff. savedata.download.finish?
					ret += "\x00" * (0x57)
					ret += "\x00"  # Stops parsing data if \xff\xff\xff\xff. savedata.download.finish?
					ret += "\x00" * 0x10c
					
					# Reads byte from:
					# 0x57 - 1 byte
					# 0x58 - 1 byte
					# 0x59 - 1 byte
					# 0x54 - 2 bytes
					# 
					# If byte at 0x58 is *NOT* 0x00:
					# 	Toggle bitmask 0x01 in some field
					# If byte at 0x57 is *NOT* 0x00:
					# 	Toggle bitmask 0x02 in some field
					# If byte at 0x59 is *NOT* 0x00:
					# 	Toggle bitmask 0x04 in some field
					
					# After above checks are completed:
					# Loop up to 10 times:
					#	If the 2 bytes at [(i * 0x08) + 0x04] are \x00\x00, break loop.
					#	Else if number is less than or equal to maximum packet size (0x1ed), do something with the data.
					
					# After the above loops have been completed:
					# Loop up to 20 times:
					#	If the 2 bytes at [(i * 4) + 0x5c] are \x00\x00, continue loop without parsing data.
					#	Else if 2 bytes are less than or equal to 0x272, set return code to 1???
					
					# After the above loops have been completed:
					# Loop up to 20 times:
					#	If the 2 bytes at [(i * 4) + 0x5c] are \x00\x00, continue loop without parsing data.
					#	Else if 2 bytes are less than or equal to 0x272:
					#		If byte at [(i * 4) + 0x84] is equal to 0, continue loop
					#		Else if byte at [(i * 4) + 0x5c] is greater than 0x272, set variable in game sync to be 0x272???
					#		Else continue loop
					#	Else continue loop
					
					# Do more other stuff after this, I'm too lazy to trace this code any longer since it seems to get pretty deep into things

					
				elif params['p'] == "worldbattle.download":
					# Stub.
					# Most likely this just downloads the save data that was uploaded with savedata.upload for the associated gsid.
					#ret = "\x00\x00\x00\x00"
					if os.path.isfile("pokemondw-worldbattle_upload_%d.bin" % int(params['gsid'])):
						with open("pokemondw-worldbattle_upload_%d.bin" % int(params['gsid']), "rb") as file:
							ret = file.read()
					else:
						ret = "\x00\x00\x00\x00"

			self.send_header("Content-Length", str(len(ret)))
			self.end_headers()
			self.wfile.write(ret)
		except:
			print "Unknown exception: %s" % traceback.format_exc()

	def do_POST(self):
		try:
			self.send_response(200)
			self.send_header("Content-type", "text/plain")

			ret = ""
			params = self.str_to_dict(self.path)
			length = int(self.headers['content-length'])
			post = self.rfile.read(length)

			if "p" in params:
				print "Received %s command" % params['p']
				print "Downloading file with a size of %d bytes..." % length
				
				if params['p'] == "account.createdata":
					file = open("pokemondw-account_createdata_command_%d.bin" % int(params['gsid']), "wb")
					file.write(post)
					file.close()
					
					# Don't know the valid responses, return 0
					ret = "\x00\x00\x00\x00"
					
				elif params['p'] == "account.create.upload":
					file = open("pokemondw-account_create_upload_%d.bin" % int(params['gsid']), "wb")
					file.write(post)
					file.close()
					
					# Don't know the valid responses, return 0
					ret = "\x00\x00\x00\x00"
					
				elif params['p'] == "savedata.upload":
					file = open("pokemondw-savedata_upload_%d.bin" % int(params['gsid']), "wb")
					file.write(post)
					file.close()
					
					# Don't know the valid responses, return 0
					ret = "\x00\x00\x00\x00"
					
				elif params['p'] == "worldbattle.upload":
					file = open("pokemondw-worldbattle_upload_%d.bin" % int(params['gsid']), "wb")
					file.write(post)
					file.close()
					
					# Don't know the valid responses, return 0
					ret = "\x00\x00\x00\x00"
					
				elif params['p'] == "savedata.download.finish":
					file = open("pokemondw-savedata_download_finish_%d.bin" % int(params['gsid']), "wb")
					file.write(post)
					file.close()
					
					# Response is never checked
					ret = "\x00\x00\x00\x00"

			self.send_header("Content-Length", str(len(ret)))
			self.end_headers()
			self.wfile.write(ret)
		except:
			print "Unknown exception: %s" % traceback.format_exc()

	def str_to_dict(self, str):
		ret = urlparse.parse_qs(urlparse.urlparse(str).query)

		for k, v in ret.iteritems():
			ret[k] = v[0]

		return ret


if __name__ == "__main__":
	pokemon_dw = PokemonDW()
	pokemon_dw.start()

Ayo, I did some research, worldbattle.download is from Battle Competition, so it's probably downloading your rankings