import requests
import xml.etree.ElementTree as ET
import sys

def propfind(path,auth):
  headers = {"Depth":"1"}
  req = r = requests.Request("PROPFIND", path, headers=headers, auth=auth)
  prepped = req.prepare()
    
  s = requests.Session()
  resp = s.send(prepped)
  return resp.text

def search_folder(requestreturn):
  innerfolders = []
  linkswrongtime = []
  firstfolder = True
  temp = "this is sa temporary storage"
  tree = ET.ElementTree(ET.fromstring(requestreturn))
  for resp in tree.findall('.//{DAV:}response'):
    for p in resp:
      if not(p.text is None):
        if (p.text[-1] == '/'):
          if not(firstfolder):
            innerfolders.append(p.text)
          else: 
            firstfolder = False
          break
        else:
          temp = p.text
      else:
        for time in p.findall('.//{DAV:}getlastmodified'):
          year = time.text.split(' ')
          if int(year[3]) < 1990:
            linkswrongtime.append(temp)
  return [innerfolders, linkswrongtime]

user = sys.argv[1]
passw = sys.argv[2]
auth = requests.auth.HTTPBasicAuth(user,passw)
prefix_path = "https://kingsx.cs.uni-saarland.de"
mainpath = "/remote.php/dav/files/"+ user + "/Testrequests/"
folders = [mainpath]
wrongtime = []

while folders:
  path_suffix = folders.pop(0)
  path = prefix_path + str(path_suffix)
  r = propfind(path,auth)
  res = search_folder(r)
  folders = folders + res[0]
  wrongtime = wrongtime + res[1]

print(wrongtime)

version_suffix = "/remote.php/dav/versions/USER/versions/FILEID"