#!/usr/bin/env python

# parse the android location service cache file
# (c) 2011 magnus eriksson aka packetlss
# 
# cache.cell + cache.wifi files located in /data/data/com.google.android.location/files on android device 
# 
# file format
#
# header
# unsigned short      db version, should be 1
# unsigned short      number of records
#
# x bytes             UTF string (key)
# int                 accuracy
# int                 confidence
# double              latitude
# double              longitude
# long                reading time

# key format
# cell: mcc + ":" + mnc + ":" + lac + ":" + cid
# wifi: mac address of AP

import os
import struct
import sys
if sys.version_info < (3,0):
    import commands as c
else:
    import subprocess as c
import time
from datetime import datetime


if len(sys.argv) == 1:
    print("\n Usage: %s [--gpx] <cache file>\n" % sys.argv[0])
    exit(1)

adb_bin = None
file_root = "/data/data/com.google.android.location/files"
gpx = False

if sys.argv[1] == '--gpx':
    gpx = True
    sys.argv = sys.argv[1:]

file = sys.argv[1]
if not os.path.exists(file):
    p = c.getstatusoutput("which adb")
    if p[0] == 0:
        adb_bin = p[1]
        r = c.getstatusoutput("%s pull %s/%s ./" % (adb_bin, file_root, file))
        if r[0] != 0:
            print (r[1])
            exit(1)

fh = open(file, 'rb')

db_version, db_total = struct.unpack('>hh', fh.read(4))

if gpx:
    print ('<gpx xmlns="http://www.topografix.com/GPX/1/1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.1" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd" creator="android-locdump">')
    print ('<metadata><name>Android Location Cache</name>')
    print ('<desc>db version: %d; total: %d</desc></metadata>' % (db_version, db_total))
    print ('<trk><trkseg>')
else:
    print ("db version:  %d" % db_version)
    print ("total:       %d" % db_total)
    print 
    print ('%25s %6s %6s %11s %11s %5s' % ('key','accuracy','conf.','latitude','longitude','time'))

i = 0
while i < db_total:
    key = fh.read(struct.unpack('>h', fh.read(2))[0])
    (accuracy, confidence, latitude, longitude, readtime) = struct.unpack('>iiddQ', fh.read(32))
    
    #print key,accuracy,confidence,latitude,longitude,time.strftime("%x %X %z", time.localtime(readtime/1000))
    if gpx:
        if accuracy >= 0:
            print ('<trkpt lat="%f" lon="%f"><time>%sZ</time><name>%s</name><desc>accuracy: %d, confidence: %d</desc></trkpt>' % (latitude, longitude, datetime.utcfromtimestamp(readtime/1000.0).isoformat(), key, accuracy, confidence))
    else:
        print ('%25s  %7d  %5d  %10f  %10f  %s' % (key,accuracy,confidence,latitude,longitude,time.strftime("%x %X %z", time.localtime(readtime/1000))))
    i=i+1

fh.close()

if gpx:
    print ('</trkseg></trk></gpx>')