diff --git a/main.py b/main.py
new file mode 100755
index 00000000..9df37ce4
--- /dev/null
+++ b/main.py
@@ -0,0 +1,52 @@
+#!/usr/bin/python
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+# TODO: Manage depth and calendars/collections (see xmlutils)
+# TODO: Manage smart and configurable logs
+# TODO: Manage authentication
+
+# TODO: remove this hack
+import sys
+sys.path.append("/usr/local/lib/python2.5/site-packages")
+
+from OpenSSL import SSL
+from twisted.web import server
+from twisted.internet import reactor
+from twisted.python import log
+
+import radicale
+
+class ServerContextFactory(object):
+    """
+    SSL context factory
+    """
+    def getContext(self):
+        """
+        Get SSL context for the HTTP server
+        """
+        ctx = SSL.Context(SSL.SSLv23_METHOD)
+        ctx.use_certificate_file(radicale.config.get("server", "certificate"))
+        ctx.use_privatekey_file(radicale.config.get("server", "privatekey"))
+        return ctx
+
+log.startLogging(sys.stdout)
+log.startLogging(open(radicale.config.get("server", "log"), "w"))
+factory = server.Site(radicale.HttpResource())
+reactor.listenSSL(radicale.config.getint("server", "port"), factory, ServerContextFactory())
+reactor.run()
diff --git a/radicale/__init__.py b/radicale/__init__.py
new file mode 100644
index 00000000..60577210
--- /dev/null
+++ b/radicale/__init__.py
@@ -0,0 +1,146 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+# TODO: Manage errors (see xmlutils)
+
+from twisted.web.resource import Resource
+from twisted.web import http
+import posixpath
+
+import config
+
+import support
+import acl
+
+import xmlutils
+import calendar
+
+_users = acl.users()
+_calendars = support.calendars()
+
+class CalendarResource(Resource):
+    """
+    Twisted resource for requests at calendar depth (/user/calendar)
+    """
+    isLeaf = True
+
+    def __init__(self, user, cal):
+        """
+        Initialize resource creating a calendar object corresponding
+        to the stocked calendar named user/cal
+        """
+        Resource.__init__(self)
+        self.calendar = calendar.Calendar(user, cal)
+
+    def render_DELETE(self, request):
+        """
+        Manage DELETE requests
+        """
+        obj = request.getHeader("if-match")
+        answer = xmlutils.delete(obj, self.calendar, str(request.URLPath()))
+        request.setResponseCode(http.NO_CONTENT)
+        return answer
+
+    def render_OPTIONS(self, request):
+        """
+        Manage OPTIONS requests
+        """
+        request.setHeader("Allow", "DELETE, OPTIONS, PROPFIND, PUT, REPORT")
+        request.setHeader("DAV", "1, calendar-access")
+        request.setResponseCode(http.OK)
+        return ""
+
+    def render_PROPFIND(self, request):
+        """
+        Manage PROPFIND requests
+        """
+        xmlRequest = request.content.read()
+        answer = xmlutils.propfind(xmlRequest, self.calendar, str(request.URLPath()))
+        request.setResponseCode(http.MULTI_STATUS)
+        return answer
+
+    def render_PUT(self, request):
+        """
+        Manage PUT requests
+        """
+        # TODO: Improve charset detection
+        contentType = request.getHeader("content-type")
+        if contentType and "charset=" in contentType:
+            charset = contentType.split("charset=")[1].strip()
+        else:
+            charset = config.get("encoding", "request")
+        icalRequest = unicode(request.content.read(), charset)
+        obj = request.getHeader("if-match")
+        xmlutils.put(icalRequest, self.calendar, str(request.URLPath()), obj)
+        request.setResponseCode(http.CREATED)
+        return ""
+
+    def render_REPORT(self, request):
+        """
+        Manage REPORT requests
+        """
+        xmlRequest = request.content.read()
+        answer = xmlutils.report(xmlRequest, self.calendar, str(request.URLPath()))
+        request.setResponseCode(http.MULTI_STATUS)
+        return answer
+
+class UserResource(Resource):
+    """
+    Twisted resource for requests at user depth (/user)
+    """
+    def __init__(self, user):
+        """
+        Initialize resource by connecting children requests to
+        the user calendars resources
+        """
+        Resource.__init__(self)
+        for cal in _calendars:
+            if cal.startswith("%s%s"%(user, posixpath.sep)):
+                calName = cal.split(posixpath.sep)[1]
+                self.putChild(calName, CalendarResource(user, cal))
+    
+    def getChild(self, cal, request):
+        """
+        Get calendar resource if user exists
+        """
+        if cal in _calendars:
+            return Resource.getChild(self, cal, request)
+        else:
+            return self
+
+class HttpResource(Resource):
+    """
+    Twisted resource for requests at root depth (/)
+    """
+    def __init__(self):
+        """
+        Initialize resource by connecting children requests to
+        the users resources
+        """
+        Resource.__init__(self)
+        for user in _users:
+            self.putChild(user, UserResource(user))
+
+    def getChild(self, user, request):
+        """
+        Get user resource if user exists
+        """
+        if user in _users:
+            return Resource.getChild(self, user, request)
+        else:
+            return self
diff --git a/radicale/acl/__init__.py b/radicale/acl/__init__.py
new file mode 100644
index 00000000..f7a0168e
--- /dev/null
+++ b/radicale/acl/__init__.py
@@ -0,0 +1,23 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+from .. import config
+
+_acl = __import__(config.get("acl", "type"), locals(), globals())
+
+users = _acl.users
diff --git a/radicale/acl/htpasswd.py b/radicale/acl/htpasswd.py
new file mode 100644
index 00000000..2c5e8358
--- /dev/null
+++ b/radicale/acl/htpasswd.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+from .. import config
+
+def users():
+    """
+    Get the List of all Users
+    """
+    return [line.split(":")[0] for line in open(config.get("acl", "filename")).readlines()]
diff --git a/radicale/calendar.py b/radicale/calendar.py
new file mode 100644
index 00000000..942fc586
--- /dev/null
+++ b/radicale/calendar.py
@@ -0,0 +1,103 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+# TODO: Manage inheritance for classes
+
+from time import time
+
+import support
+
+class Calendar(object):
+    """
+    Internal Calendar Class
+    """
+    def __init__(self, user, cal):
+        # TODO: Use properties from the calendar
+        self.encoding = "utf-8"
+        self.owner = "lize"
+        self.user = user
+        self.cal = cal
+        self.version = "2.0"
+        self.ctag = str(hash(self.vcalendar()))
+
+    def append(self, vcalendar):
+        """
+        Append vcalendar
+        """
+        self.ctag = str(hash(self.vcalendar()))
+        support.append(self.cal, vcalendar)
+
+    def remove(self, uid):
+        """
+        Remove Object Named uid
+        """
+        self.ctag = str(hash(self.vcalendar()))
+        support.remove(self.cal, uid)
+
+    def replace(self, uid, vcalendar):
+        """
+        Replace Objet Named uid by vcalendar
+        """
+        self.ctag = str(hash(self.vcalendar()))
+        support.remove(self.cal, uid)
+        support.append(self.cal, vcalendar)
+
+    def vcalendar(self):
+        return unicode(support.read(self.cal), self.encoding)
+
+class Event(object):
+    """
+    Internal Event Class
+    """
+    # TODO: Fix the behaviour if no UID is given
+    def __init__(self, vcalendar):
+        self.text = vcalendar
+
+    def etag(self):
+        return str(hash(self.text))
+
+class Header(object):
+    """
+    Internal Headers Class
+    """
+    def __init__(self, vcalendar):
+        self.text = vcalendar
+
+class Timezone(object):
+    """
+    Internal Timezone Class
+    """
+    def __init__(self, vcalendar):
+        lines = vcalendar.splitlines()
+        for line in lines:
+            if line.startswith("TZID:"):
+                self.tzid = line.lstrip("TZID:")
+                break
+
+        self.text = vcalendar
+
+class Todo(object):
+    """
+    Internal Todo Class
+    """
+    # TODO: Fix the behaviour if no UID is given
+    def __init__(self, vcalendar):
+        self.text = vcalendar
+
+    def etag(self):
+        return str(hash(self.text))
diff --git a/radicale/config.py b/radicale/config.py
new file mode 100644
index 00000000..f6d47631
--- /dev/null
+++ b/radicale/config.py
@@ -0,0 +1,68 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+from ConfigParser import RawConfigParser as ConfigParser
+
+# Default functions
+_config = ConfigParser()
+get = _config.get
+set = _config.set
+getboolean = _config.getboolean
+getint = _config.getint
+getfloat = _config.getfloat
+options = _config.options
+items = _config.items
+
+# Default config
+_initial = {
+    "server": {
+        "certificate": "/etc/apache2/ssl/server.crt",
+        "privatekey": "/etc/apache2/ssl/server.key",
+        "log": "/var/www/radicale/server.log",
+        "port": "1001",
+        },
+    "encoding": {
+        "request": "utf-8",
+        "stock": "utf-8",
+        },
+    "namespace": {
+        "C": "urn:ietf:params:xml:ns:caldav",
+        "D": "DAV:",
+        "CS": "http://calendarserver.org/ns/",
+        },
+    "status": {
+        "200": "HTTP/1.1 200 OK",
+        },
+    "acl": {
+        "type": "htpasswd",
+        "filename": "/etc/radicale/users",
+        },
+    "support": {
+        "type": "plain",
+        "folder": "/var/local/radicale",
+        },
+    }
+
+# Set the default config
+for section, values in _initial.iteritems():
+    _config.add_section(section)
+    for key, value in values.iteritems():
+        _config.set(section, key, value)
+
+# Set the user config
+_config.read("/etc/radicale/config")
diff --git a/radicale/ical.py b/radicale/ical.py
new file mode 100644
index 00000000..ea454113
--- /dev/null
+++ b/radicale/ical.py
@@ -0,0 +1,119 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+# TODO: Manage filters (see xmlutils)
+# TODO: Factorize code
+
+import calendar
+
+def writeCalendar(headers=[], timezones=[], todos=[], events=[]):
+    """
+    Create calendar from headers, timezones, todos, events
+    """
+    # TODO: Manage encoding and EOL
+    return "\n".join((
+        "BEGIN:VCALENDAR",
+        "\n".join([header.text for header in headers]),
+        "\n".join([timezone.text for timezone in timezones]),
+        "\n".join([todo.text for todo in todos]),
+        "\n".join([event.text for event in events]),
+        "END:VCALENDAR"))
+
+def events(vcalendar):
+    """
+    Find VEVENT Items in vcalendar
+    """
+    events = []
+
+    lines = vcalendar.splitlines()
+    inEvent = False
+    eventLines = []
+
+    for line in lines:
+        if line.startswith("BEGIN:VEVENT"):
+            inEvent = True
+            eventLines = []
+
+        if inEvent:
+            # TODO: Manage encoding
+            eventLines.append(line)
+            if line.startswith("END:VEVENT"):
+                events.append(calendar.Event("\n".join(eventLines)))
+
+    return events
+
+def headers(vcalendar):
+    """
+    Find Headers Items in vcalendar
+    """
+    headers = []
+
+    lines = vcalendar.splitlines()
+    for line in lines:
+        if line.startswith("PRODID:"):
+            headers.append(calendar.Header(line))
+    for line in lines:
+        if line.startswith("VERSION:"):
+            headers.append(calendar.Header(line))
+
+    return headers
+    
+def timezones(vcalendar):
+    """
+    Find VTIMEZONE Items in vcalendar
+    """
+    timezones = []
+
+    lines = vcalendar.splitlines()
+    inTz = False
+    tzLines = []
+
+    for line in lines:
+        if line.startswith("BEGIN:VTIMEZONE"):
+            inTz = True
+            tzLines = []
+
+        if inTz:
+            tzLines.append(line)
+            if line.startswith("END:VTIMEZONE"):
+                timezones.append(calendar.Timezone("\n".join(tzLines)))
+
+    return timezones
+
+def todos(vcalendar):
+    """
+    Find VTODO Items in vcalendar
+    """
+    todos = []
+
+    lines = vcalendar.splitlines()
+    inTodo = False
+    todoLines = []
+
+    for line in lines:
+        if line.startswith("BEGIN:VTODO"):
+            inTodo = True
+            todoLines = []
+
+        if inTodo:
+            # TODO: Manage encoding
+            todoLines.append(line)
+            if line.startswith("END:VTODO"):
+                todos.append(calendar.Todo("\n".join(todoLines)))
+
+    return todos
diff --git a/radicale/support/__init__.py b/radicale/support/__init__.py
new file mode 100644
index 00000000..5351db28
--- /dev/null
+++ b/radicale/support/__init__.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+from .. import config
+
+_support = __import__(config.get("support", "type"), locals(), globals())
+
+append = _support.append
+calendars =_support.calendars
+read = _support.read
+remove = _support.remove
diff --git a/radicale/support/plain.py b/radicale/support/plain.py
new file mode 100644
index 00000000..8a8cbaf0
--- /dev/null
+++ b/radicale/support/plain.py
@@ -0,0 +1,104 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import posixpath
+
+from .. import ical
+from .. import config
+
+def calendars():
+    """
+    List Available Calendars Paths
+    """
+    calendars = []
+
+    for folder in os.listdir(config.get("support", "folder")):
+        for cal in os.listdir(os.path.join(config.get("support", "folder"), folder)):
+            calendars.append(posixpath.join(folder, cal))
+
+    return calendars
+
+def read(cal):
+    """
+    Read cal
+    """
+    path = os.path.join(config.get("support", "folder"), cal.replace(posixpath.sep, os.path.sep))
+    return open(path).read()
+
+def append(cal, vcalendar):
+    """
+    Append vcalendar to cal
+    """
+    oldCalendar = read(cal)
+    oldTzs = [tz.tzid for tz in ical.timezones(oldCalendar)]
+    path = os.path.join(config.get("support", "folder"), cal.replace(posixpath.sep, os.path.sep))
+
+    oldObjects = []
+    oldObjects.extend([event.etag() for event in ical.events(oldCalendar)])
+    oldObjects.extend([todo.etag() for todo in ical.todos(oldCalendar)])
+
+    objects = []
+    objects.extend(ical.events(vcalendar))
+    objects.extend(ical.todos(vcalendar))
+
+    for tz in ical.timezones(vcalendar):
+        if tz.tzid not in oldTzs:
+            # TODO: Manage position, encoding and EOL
+            fd = open(path)
+            lines = [line for line in fd.readlines() if line]
+            fd.close()
+
+            for i,line in enumerate(tz.text.splitlines()):
+                lines.insert(2+i, line.encode("utf-8")+"\n")
+
+            fd = open(path, "w")
+            fd.writelines(lines)
+            fd.close()
+
+    for obj in objects:
+        if obj.etag() not in oldObjects:
+            # TODO: Manage position, encoding and EOL
+            fd = open(path)
+            lines = [line for line in fd.readlines() if line]
+            fd.close()
+
+            for line in obj.text.splitlines():
+                lines.insert(-1, line.encode("utf-8")+"\n")
+
+            fd = open(path, "w")
+            fd.writelines(lines)
+            fd.close()
+
+def remove(cal, etag):
+    """
+    Remove object named uid from cal
+    """
+    path = os.path.join(config.get("support", "folder"), cal.replace(posixpath.sep, os.path.sep))
+
+    cal = read(cal)
+
+    headers = ical.headers(cal)
+    timezones = ical.timezones(cal)
+    todos = [todo for todo in ical.todos(cal) if todo.etag() != etag]
+    events = [event for event in ical.events(cal) if event.etag() != etag]
+
+    fd = open(path, "w")
+    fd.write(ical.writeCalendar(headers, timezones, todos, events))
+    fd.close()
+
diff --git a/radicale/xmlutils.py b/radicale/xmlutils.py
new file mode 100644
index 00000000..63949601
--- /dev/null
+++ b/radicale/xmlutils.py
@@ -0,0 +1,206 @@
+# -*- coding: utf-8; indent-tabs-mode: nil; -*-
+#
+# This file is part of Radicale Server - Calendar Server
+# Copyright © 2008 The Radicale Team
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+XML and iCal requests manager
+
+Note that all these functions need to receive unicode objects for full
+iCal requests (PUT) and string objects with charset correctly defined
+in them for XML requests (all but PUT).
+"""
+
+# TODO: Manage errors (see __init__)
+# TODO: Manage depth and calendars/collections (see main)
+
+import xml.etree.ElementTree as ET
+
+import config
+import ical
+
+# TODO: This is a well-known and accepted hack for ET
+for key,value in config.items("namespace"):
+    ET._namespace_map[value] = key
+
+def _tag(shortName, local):
+    """
+    Get XML Clark notation {uri(shortName)}local
+    """
+    return "{%s}%s"%(config.get("namespace", shortName), local)
+
+def delete(obj, calendar, url):
+    """
+    Read and answer DELETE requests
+    """
+    # Read rfc4918-9.6 for info
+
+    # Reading request
+    calendar.remove(obj)
+
+    # Writing answer
+    multistatus = ET.Element(_tag("D", "multistatus"))
+    response = ET.Element(_tag("D", "response"))
+    multistatus.append(response)
+
+    href = ET.Element(_tag("D", "href"))
+    href.text = url
+    response.append(href)
+
+    status = ET.Element(_tag("D", "status"))
+    status.text = config.get("status", "200")
+    response.append(status)
+
+    return ET.tostring(multistatus, config.get("encoding", "request"))
+
+def propfind(xmlRequest, calendar, url):
+    """
+    Read and answer PROPFIND requests
+    """
+    # Read rfc4918-9.1 for info
+
+    # Reading request
+    root = ET.fromstring(xmlRequest)
+
+    propElement = root.find(_tag("D", "prop"))
+    propList = propElement.getchildren()
+    properties = [property.tag for property in propList]
+    
+    # Writing answer
+    multistatus = ET.Element(_tag("D", "multistatus"))
+    response = ET.Element(_tag("D", "response"))
+    multistatus.append(response)
+
+    href = ET.Element(_tag("D", "href"))
+    href.text = url
+    response.append(href)
+
+    propstat = ET.Element(_tag("D", "propstat"))
+    response.append(propstat)
+
+    prop = ET.Element(_tag("D", "prop"))
+    propstat.append(prop)
+
+    if _tag("D", "resourcetype") in properties:
+        resourcetype = ET.Element(_tag("D", "resourcetype"))
+        resourcetype.append(ET.Element(_tag("D", "collection")))
+        resourcetype.append(ET.Element(_tag("C", "calendar")))
+        prop.append(resourcetype)
+
+    if _tag("D", "owner") in properties:
+        owner = ET.Element(_tag("D", "owner"))
+        owner.text = calendar.owner
+        prop.append(owner)
+
+    if _tag("CS", "getctag") in properties:
+        getctag = ET.Element(_tag("CS", "getctag"))
+        getctag.text = calendar.ctag
+        prop.append(getctag)
+
+    status = ET.Element(_tag("D", "status"))
+    status.text = config.get("status", "200")
+    propstat.append(status)
+
+    return ET.tostring(multistatus, config.get("encoding", "request"))
+
+def put(icalRequest, calendar, url, obj):
+    """
+    Read PUT requests
+    """
+    if obj:
+        # PUT is modifying obj
+        calendar.replace(obj, icalRequest)
+    else:
+        # PUT is adding a new object
+        calendar.append(icalRequest)
+
+def report(xmlRequest, calendar, url):
+    """
+    Read and answer REPORT requests
+    """
+    # Read rfc3253-3.6 for info
+
+    # Reading request
+    root = ET.fromstring(xmlRequest)
+
+    propElement = root.find(_tag("D", "prop"))
+    propList = propElement.getchildren()
+    properties = [property.tag for property in propList]
+
+    filters = {}
+    filterElement = root.find(_tag("C", "filter"))
+    filterList = propElement.getchildren()
+    # TODO: This should be recursive
+    # TODO: Really manage filters (see ical)
+    for filter in filterList:
+        sub = filters[filter.get("name")] = {}
+        for subfilter in filter.getchildren():
+            sub[subfilter.get("name")] = {}
+
+    if root.tag == _tag("C", "calendar-multiget"):
+        # Read rfc4791-7.9 for info
+        hreferences = [hrefElement.text for hrefElement in root.findall(_tag("D", "href"))]
+    else:
+        hreferences = [url]
+
+    # Writing answer
+    multistatus = ET.Element(_tag("D", "multistatus"))
+
+    # TODO: WTF, sunbird needs one response by object,
+    #       is that really what is needed?
+    #       Read rfc4791-9.[6|10] for info
+    for hreference in hreferences:
+        headers = ical.headers(calendar.vcalendar())
+        # TODO: Define timezones by obj
+        timezones = ical.timezones(calendar.vcalendar())
+
+        objects = []
+        objects.extend(ical.events(calendar.vcalendar()))
+        objects.extend(ical.todos(calendar.vcalendar()))
+
+        for obj in objects:
+            # TODO: Use the hreference to read data and create href.text
+            #       We assume here that hreference is url
+            response = ET.Element(_tag("D", "response"))
+            multistatus.append(response)
+
+            href = ET.Element(_tag("D", "href"))
+            href.text = url
+            response.append(href)
+
+            propstat = ET.Element(_tag("D", "propstat"))
+            response.append(propstat)
+
+            prop = ET.Element(_tag("D", "prop"))
+            propstat.append(prop)
+
+            if _tag("D", "getetag") in properties:
+                # TODO: Can UID and ETAG be the same?
+                getetag = ET.Element(_tag("D", "getetag"))
+                getetag.text = obj.etag()
+                prop.append(getetag)
+
+            if _tag("C", "calendar-data") in properties:
+                cdata = ET.Element(_tag("C", "calendar-data"))
+                # TODO: Maybe assume that events and todos are not the same
+                cdata.text = ical.writeCalendar(headers, timezones, [obj])
+                prop.append(cdata)
+
+            status = ET.Element(_tag("D", "status"))
+            status.text = config.get("status", "200")
+            propstat.append(status)
+
+    return ET.tostring(multistatus, config.get("encoding", "request"))