Raw communication with owncloud server

errordemo.py

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import socket
import base64
import urlparse

# Data for accessing the calendar
CALURL = 'http://hermitest/owncloud/remote.php/caldav/calendars/mike/testcal1/'
USERNAME = 'mike'
PASSWORD = 'XXXXXXXXX'


SOCKETLEN_WR = 256
SOCKETLEN_RD = 2048
class mysocket:
    def __init__(self):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    def connect(self, host, port):
        self.sock.connect((host, port))

    def mysend(self, msg):
        MSGLEN = len(msg)
        totalsent = 0
        while totalsent < MSGLEN:
            sent = self.sock.send(msg[totalsent:totalsent + SOCKETLEN_WR])
            if sent == 0:
                raise RuntimeError("socket connection broken")
            totalsent = totalsent + sent

    def myreceive(self):
        # receive until socket is closed
        chunks = []
        bytes_recd = 0
        while True:
            chunk = self.sock.recv(SOCKETLEN_RD)
            if chunk == '':
                break
                raise RuntimeError("socket connection broken")
            chunks.append(chunk)
            bytes_recd = bytes_recd + len(chunk)
        return ''.join(chunks)

def create_msg(host, path, user, password,data):
    authorization = base64.b64encode(user + ':' + password)
    return """REPORT %s HTTP/1.1
Host: %s
Content-Length: %s
Accept: text/xml
User-Agent: Mozilla/5.0
Depth: 1
Content-Type: application/xml; charset="utf-8"
Authorization: Basic %s

%s""" % (
        path, host, len(data), authorization, data
    )

def send_data(host, port, data):
    ms = mysocket()
    ms.connect( host, port )
    ms.mysend(msg)
    return ms.myreceive()


# Testdata to send

data_norm = """<?xml version='1.0' encoding='utf-8'?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:">
   <D:prop>
      <C:calendar-data/>
   </D:prop>
   <C:filter>
      <C:comp-filter name="VCALENDAR">
         <C:comp-filter name="VEVENT">
            <C:time-range start="20160101T000000Z"/>
         </C:comp-filter>
      </C:comp-filter>
   </C:filter>
</C:calendar-query>"""

data_ext = """<?xml version='1.0' encoding='utf-8'?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:">
  <D:prop>
     <C:calendar-data>
        <C:expand start="20160101T000000Z" end="20160130T000000Z"/>
     </C:calendar-data>
  </D:prop>
  <C:filter>
     <C:comp-filter name="VCALENDAR">
        <C:comp-filter name="VEVENT">
           <C:time-range start="20160101T000000Z" end="20160130T000000Z"/>
        </C:comp-filter>
     </C:comp-filter>
   </C:filter>
</C:calendar-query>"""


# split URL
urlparts = urlparse.urlparse(CALURL)
assert urlparts.scheme == 'http'

url_path = urlparts.path

host_port = urlparts.netloc    # myhost  or    myhost:port
p = host_port.find(':')
if p == -1:
    host = host_port
    port = 80
else:
    host = host_port[:p]
    port = int(host_port[(p + 1):])

msg = create_msg(host_port, url_path, USERNAME, PASSWORD, data_norm)
print(msg)
res = send_data(host, port, msg)
print('------------------------------------------')
print(res)

print('==========================================')
msg = create_msg(host_port, url_path, USERNAME, PASSWORD, data_ext)
print(msg)
res = send_data(host, port, msg)
print('------------------------------------------')
print(res)

This is a small program to demonstrate an error occurring in the calendar app of owncloud 8.1 and 8.2 when trying to select a date range.

See also owncloud/calendar#1013