GMusic Download

GmusicDL

#!/usr/bin/env python

import sys,re,time,os
import urllib,urllib2,cookielib
import xml.dom.minidom
from ID3 import *

try:
  import json
except ImportError,e:
  import simplejson as json

import mimetypes,random

if len(sys.argv)<3:
  sys.stderr.write("%s EMAIL PASSWD [TRACKNR]\n"%sys.argv[0])
  sys.exit(2)
elif len(sys.argv)>3:
  _,email,passwd,tracknr=sys.argv
else:
  _,email,passwd=sys.argv
  tracknr = -1

urls=[
  "http://music.google.com/",
  "http://music.google.com/music/listen",
  "http://music.google.com/music/services/loadalltracks?u=0&xt=%s",
  "http://music.google.com/music/play?songid=%s&pt=e",]

cj = cookielib.CookieJar() 
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

#fetch login parameters
res=opener.open(urls[0])
html=re.sub(r"\r|\n"," ",re.sub(r"\s{2,}"," ",res.read()))
form=re.search("<form.*?</form>",html).group()
inputs="\n".join(re.findall("<input .*?/>",form))
dom=xml.dom.minidom.parseString(
re.match("<form.*?>",form).group()+inputs+"</form>")

urls.append(dom.getElementsByTagName("form")[0].getAttribute("action"))

params={}
for tag in dom.getElementsByTagName("input"):
  params[tag.getAttribute("name")]=tag.getAttribute("value")

params["Email"]=email
params["Passwd"]=passwd

#login
res = opener.open(urls[-1],urllib.urlencode(params))

res = opener.open(urls[1])
xt_cookie=cj._cookies["music.google.com"]["/music"]["xt"]
xt=xt_cookie.value

res = opener.open(urls[2]%xt,urllib.urlencode({"json":"{}"}))
all_tracks = json.loads(res.read())["playlist"]

#print the entire tracklist...
if tracknr==-1:
  for i in range(len(all_tracks)-1):
    print "%d / %s: \"%s\""%(i,all_tracks[i]["title"],all_tracks[i]["artist"])
    i += 1;

#...or download a specific track?
else: 
  #query the stream url
  res = opener.open(urls[3]%all_tracks[int(tracknr)]["id"])
  track_url = json.loads(res.read())["url"]

  local_file = open("./"+all_tracks[int(tracknr)]["name"]+".mp3", 'w')
  remote_file =  opener.open(track_url)
  local_file.write(remote_file.read())
  remote_file.close()
  local_file.close()

  #tag the new file
  local_file = ID3("./"+all_tracks[int(tracknr)]["name"]+".mp3")
  local_file['TITLE'] = all_tracks[int(tracknr)]["name"]
  local_file['ARTIST'] = all_tracks[int(tracknr)]["artist"]
  local_file['ALBUM'] = all_tracks[int(tracknr)]["album"]
  local_file['TRACK'] = int(all_tracks[int(tracknr)]["track"])
  local_file.write()