#!/usr/bin/python
#
# ublox AssistNow Online almanach downloader for Neo Freerunner
#
# v0.1
#
# Wilfried Klaebe <wk-openmoko@chaos.in-kiel.de>
#
# Usage:
#
# agps-alm.py > /dev/ttySAC1
#

import sys
import socket
import re

user='your@mail.address'
pwd='pwdfromublox'

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('agps.u-blox.com',46434))

s.send('user='+user+';pwd='+pwd+';cmd=alm;lat=0;lon=0;pacc=40000000;\n')

buf = s.recv(4096)
while 1:
	b = s.recv(4096)
	if not b:
		break
	buf += b

h = {}

while 1:
	(l,s,buf) = buf.partition('\n')
	l = l.rstrip('\r\n')
	#
	sys.stderr.write(l+'\n')
	#
	if (l == ""):
		if h.has_key('content-length') and h['content-length'].isdigit() and h.has_key('content-type') and h['content-type'] == 'application/ubx':
			sys.stdout.write(buf[0:int(h['content-length'])])
		sys.exit(0)
	#
	m = re.search('\\A(.+): (.+)\\Z',l)
	if m:
		h[m.group(1).lower()] = m.group(2).lower();