import json
import os
import time

# current prefs
pref_path = '{0}/.config/chromium/Default/Preferences'.format(os.getenv('HOME'))
prefs = open(pref_path, 'r+')
json_prefs = prefs.read()

# backup
old_prefs = open('{0}.{1}'.format(pref_path, time.time()), 'w')
old_prefs.write(json_prefs)
old_prefs.close()

# disable referrers
new_prefs = json.loads(json_prefs)
new_prefs['enable_referrers'] = False
new_json_prefs = json.dumps(new_prefs, sort_keys=True, indent=4)

# save
prefs.write(new_json_prefs)
prefs.close()

print 'DONE'