6b7e79a368
See a7b47f075499a1e1b40539bc1fa872a3ab77a204 The check for "." is now needless because the sane path is always absolute. ```path.replace(os.sep, "/")``` is only relevant for the (multi)filesystem backend and should be there.
493 lines
15 KiB
Python
493 lines
15 KiB
Python
# -*- coding: utf-8 -*-
|
|
#
|
|
# This file is part of Radicale Server - Calendar Server
|
|
# Copyright © 2008 Nicolas Kandel
|
|
# Copyright © 2008 Pascal Halter
|
|
# Copyright © 2008-2015 Guillaume Ayoub
|
|
#
|
|
# 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/>.
|
|
|
|
"""
|
|
Radicale collection classes.
|
|
|
|
Define the main classes of a collection as seen from the server.
|
|
|
|
"""
|
|
|
|
import os
|
|
import hashlib
|
|
import re
|
|
from uuid import uuid4
|
|
from random import randint
|
|
from contextlib import contextmanager
|
|
|
|
from . import pathutils
|
|
|
|
|
|
def serialize(tag, headers=(), items=()):
|
|
"""Return a text corresponding to given collection ``tag``.
|
|
|
|
The text may have the given ``headers`` and ``items`` added around the
|
|
items if needed (ie. for calendars).
|
|
|
|
"""
|
|
items = sorted(items, key=lambda x: x.name)
|
|
if tag == "VADDRESSBOOK":
|
|
lines = [item.text for item in items]
|
|
else:
|
|
lines = ["BEGIN:%s" % tag]
|
|
for part in (headers, items):
|
|
if part:
|
|
lines.append("\n".join(item.text for item in part))
|
|
lines.append("END:%s\n" % tag)
|
|
return "\n".join(lines)
|
|
|
|
|
|
def unfold(text):
|
|
"""Unfold multi-lines attributes.
|
|
|
|
Read rfc5545-3.1 for info.
|
|
|
|
"""
|
|
return re.sub('\r\n( |\t)', '', text).splitlines()
|
|
|
|
|
|
class Item(object):
|
|
"""Internal iCal item."""
|
|
def __init__(self, text, name=None):
|
|
"""Initialize object from ``text`` and different ``kwargs``."""
|
|
self.text = text
|
|
self._name = name
|
|
|
|
# We must synchronize the name in the text and in the object.
|
|
# An item must have a name, determined in order by:
|
|
#
|
|
# - the ``name`` parameter
|
|
# - the ``X-RADICALE-NAME`` iCal property (for Events, Todos, Journals)
|
|
# - the ``UID`` iCal property (for Events, Todos, Journals)
|
|
# - the ``TZID`` iCal property (for Timezones)
|
|
if not self._name:
|
|
for line in unfold(self.text):
|
|
if line.startswith("X-RADICALE-NAME:"):
|
|
self._name = line.replace("X-RADICALE-NAME:", "").strip()
|
|
break
|
|
elif line.startswith("TZID:"):
|
|
self._name = line.replace("TZID:", "").strip()
|
|
break
|
|
elif line.startswith("UID:"):
|
|
self._name = line.replace("UID:", "").strip()
|
|
# Do not break, a ``X-RADICALE-NAME`` can appear next
|
|
|
|
if self._name:
|
|
# Remove brackets that may have been put by Outlook
|
|
self._name = self._name.strip("{}")
|
|
if "\nX-RADICALE-NAME:" in text:
|
|
for line in unfold(self.text):
|
|
if line.startswith("X-RADICALE-NAME:"):
|
|
self.text = self.text.replace(
|
|
line, "X-RADICALE-NAME:%s" % self._name)
|
|
else:
|
|
self.text = self.text.replace(
|
|
"\nEND:", "\nX-RADICALE-NAME:%s\nEND:" % self._name)
|
|
else:
|
|
# workaround to get unicode on both python2 and 3
|
|
self._name = uuid4().hex.encode("ascii").decode("ascii")
|
|
self.text = self.text.replace(
|
|
"\nEND:", "\nX-RADICALE-NAME:%s\nEND:" % self._name)
|
|
|
|
def __hash__(self):
|
|
return hash(self.text)
|
|
|
|
def __eq__(self, item):
|
|
return isinstance(item, Item) and self.text == item.text
|
|
|
|
@property
|
|
def etag(self):
|
|
"""Item etag.
|
|
|
|
Etag is mainly used to know if an item has changed.
|
|
|
|
"""
|
|
md5 = hashlib.md5()
|
|
md5.update(self.text.encode("utf-8"))
|
|
return '"%s"' % md5.hexdigest()
|
|
|
|
@property
|
|
def name(self):
|
|
"""Item name.
|
|
|
|
Name is mainly used to give an URL to the item.
|
|
|
|
"""
|
|
return self._name
|
|
|
|
|
|
class Header(Item):
|
|
"""Internal header class."""
|
|
|
|
|
|
class Timezone(Item):
|
|
"""Internal timezone class."""
|
|
tag = "VTIMEZONE"
|
|
|
|
|
|
class Component(Item):
|
|
"""Internal main component of a collection."""
|
|
|
|
|
|
class Event(Component):
|
|
"""Internal event class."""
|
|
tag = "VEVENT"
|
|
mimetype = "text/calendar"
|
|
|
|
|
|
class Todo(Component):
|
|
"""Internal todo class."""
|
|
tag = "VTODO" # pylint: disable=W0511
|
|
mimetype = "text/calendar"
|
|
|
|
|
|
class Journal(Component):
|
|
"""Internal journal class."""
|
|
tag = "VJOURNAL"
|
|
mimetype = "text/calendar"
|
|
|
|
|
|
class Card(Component):
|
|
"""Internal card class."""
|
|
tag = "VCARD"
|
|
mimetype = "text/vcard"
|
|
|
|
|
|
class Collection(object):
|
|
"""Internal collection item.
|
|
|
|
This class must be overridden and replaced by a storage backend.
|
|
|
|
"""
|
|
def __init__(self, path, principal=False):
|
|
"""Initialize the collection.
|
|
|
|
``path`` must be the normalized relative path of the collection, using
|
|
the slash as the folder delimiter, with no leading nor trailing slash.
|
|
|
|
"""
|
|
self.encoding = "utf-8"
|
|
# path should already be sanitized
|
|
self.path = pathutils.sanitize_path(path).strip("/")
|
|
split_path = self.path.split("/")
|
|
if principal and split_path and self.is_node(self.path):
|
|
# Already existing principal collection
|
|
self.owner = split_path[0]
|
|
elif len(split_path) > 1:
|
|
# URL with at least one folder
|
|
self.owner = split_path[0]
|
|
else:
|
|
self.owner = None
|
|
self.is_principal = principal
|
|
self._items = None
|
|
|
|
@classmethod
|
|
def from_path(cls, path, depth="1", include_container=True):
|
|
"""Return a list of collections and items under the given ``path``.
|
|
|
|
If ``depth`` is "0", only the actual object under ``path`` is
|
|
returned.
|
|
|
|
If ``depth`` is anything but "0", it is considered as "1" and direct
|
|
children are included in the result. If ``include_container`` is
|
|
``True`` (the default), the containing object is included in the
|
|
result.
|
|
|
|
The ``path`` is relative.
|
|
|
|
"""
|
|
# path == None means wrong URL
|
|
if path is None:
|
|
return []
|
|
|
|
# path should already be sanitized
|
|
sane_path = pathutils.sanitize_path(path).strip("/")
|
|
attributes = sane_path.split("/")
|
|
if not attributes:
|
|
return []
|
|
|
|
# Try to guess if the path leads to a collection or an item
|
|
if (cls.is_leaf("/".join(attributes[:-1])) or not
|
|
path.endswith(("/", "/caldav", "/carddav"))):
|
|
attributes.pop()
|
|
|
|
result = []
|
|
path = "/".join(attributes)
|
|
|
|
principal = len(attributes) <= 1
|
|
if cls.is_node(path):
|
|
if depth == "0":
|
|
result.append(cls(path, principal))
|
|
else:
|
|
if include_container:
|
|
result.append(cls(path, principal))
|
|
for child in cls.children(path):
|
|
result.append(child)
|
|
else:
|
|
if depth == "0":
|
|
result.append(cls(path))
|
|
else:
|
|
collection = cls(path, principal)
|
|
if include_container:
|
|
result.append(collection)
|
|
result.extend(collection.components)
|
|
return result
|
|
|
|
def save(self, text):
|
|
"""Save the text into the collection."""
|
|
raise NotImplementedError
|
|
|
|
def delete(self):
|
|
"""Delete the collection."""
|
|
raise NotImplementedError
|
|
|
|
@property
|
|
def text(self):
|
|
"""Collection as plain text."""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def children(cls, path):
|
|
"""Yield the children of the collection at local ``path``."""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def is_node(cls, path):
|
|
"""Return ``True`` if relative ``path`` is a node.
|
|
|
|
A node is a WebDAV collection whose members are other collections.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def is_leaf(cls, path):
|
|
"""Return ``True`` if relative ``path`` is a leaf.
|
|
|
|
A leaf is a WebDAV collection whose members are not collections.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@property
|
|
def last_modified(self):
|
|
"""Get the last time the collection has been modified.
|
|
|
|
The date is formatted according to rfc1123-5.2.14.
|
|
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@property
|
|
@contextmanager
|
|
def props(self):
|
|
"""Get the collection properties."""
|
|
raise NotImplementedError
|
|
|
|
@property
|
|
def exists(self):
|
|
"""``True`` if the collection exists on the storage, else ``False``."""
|
|
return self.is_node(self.path) or self.is_leaf(self.path)
|
|
|
|
@staticmethod
|
|
def _parse(text, item_types, name=None):
|
|
"""Find items with type in ``item_types`` in ``text``.
|
|
|
|
If ``name`` is given, give this name to new items in ``text``.
|
|
|
|
Return a list of items.
|
|
|
|
"""
|
|
item_tags = {}
|
|
for item_type in item_types:
|
|
item_tags[item_type.tag] = item_type
|
|
|
|
items = {}
|
|
|
|
lines = unfold(text)
|
|
in_item = False
|
|
|
|
for line in lines:
|
|
if line.startswith("BEGIN:") and not in_item:
|
|
item_tag = line.replace("BEGIN:", "").strip()
|
|
if item_tag in item_tags:
|
|
in_item = True
|
|
item_lines = []
|
|
|
|
if in_item:
|
|
item_lines.append(line)
|
|
if line.startswith("END:%s" % item_tag):
|
|
in_item = False
|
|
item_type = item_tags[item_tag]
|
|
item_text = "\n".join(item_lines)
|
|
item_name = None if item_tag == "VTIMEZONE" else name
|
|
item = item_type(item_text, item_name)
|
|
if item.name in items:
|
|
text = "\n".join((item.text, items[item.name].text))
|
|
items[item.name] = item_type(text, item.name)
|
|
else:
|
|
items[item.name] = item
|
|
|
|
return items
|
|
|
|
def append(self, name, text):
|
|
"""Append items from ``text`` to collection.
|
|
|
|
If ``name`` is given, give this name to new items in ``text``.
|
|
|
|
"""
|
|
new_items = self._parse(
|
|
text, (Timezone, Event, Todo, Journal, Card), name)
|
|
for new_item in new_items.values():
|
|
if new_item.name not in self.items:
|
|
self.items[new_item.name] = new_item
|
|
self.write()
|
|
|
|
def remove(self, name):
|
|
"""Remove object named ``name`` from collection."""
|
|
if name in self.items:
|
|
del self.items[name]
|
|
self.write()
|
|
|
|
def replace(self, name, text):
|
|
"""Replace content by ``text`` in collection objet called ``name``."""
|
|
self.remove(name)
|
|
self.append(name, text)
|
|
|
|
def write(self):
|
|
"""Write collection with given parameters."""
|
|
text = serialize(self.tag, self.headers, self.items.values())
|
|
self.save(text)
|
|
|
|
def set_mimetype(self, mimetype):
|
|
"""Set the mimetype of the collection."""
|
|
with self.props as props:
|
|
if "tag" not in props:
|
|
if mimetype == "text/vcard":
|
|
props["tag"] = "VADDRESSBOOK"
|
|
else:
|
|
props["tag"] = "VCALENDAR"
|
|
|
|
@property
|
|
def tag(self):
|
|
"""Type of the collection."""
|
|
with self.props as props:
|
|
if "tag" not in props:
|
|
try:
|
|
tag = open(self.path).readlines()[0][6:].rstrip()
|
|
except IOError:
|
|
if self.path.endswith((".vcf", "/carddav")):
|
|
props["tag"] = "VADDRESSBOOK"
|
|
else:
|
|
props["tag"] = "VCALENDAR"
|
|
else:
|
|
if tag in ("VADDRESSBOOK", "VCARD"):
|
|
props["tag"] = "VADDRESSBOOK"
|
|
else:
|
|
props["tag"] = "VCALENDAR"
|
|
return props["tag"]
|
|
|
|
@property
|
|
def mimetype(self):
|
|
"""Mimetype of the collection."""
|
|
if self.tag == "VADDRESSBOOK":
|
|
return "text/vcard"
|
|
elif self.tag == "VCALENDAR":
|
|
return "text/calendar"
|
|
|
|
@property
|
|
def resource_type(self):
|
|
"""Resource type of the collection."""
|
|
if self.tag == "VADDRESSBOOK":
|
|
return "addressbook"
|
|
elif self.tag == "VCALENDAR":
|
|
return "calendar"
|
|
|
|
@property
|
|
def etag(self):
|
|
"""Etag from collection."""
|
|
md5 = hashlib.md5()
|
|
md5.update(self.text.encode("utf-8"))
|
|
return '"%s"' % md5.hexdigest()
|
|
|
|
@property
|
|
def name(self):
|
|
"""Collection name."""
|
|
with self.props as props:
|
|
return props.get("D:displayname", self.path.split(os.path.sep)[-1])
|
|
|
|
@property
|
|
def color(self):
|
|
"""Collection color."""
|
|
with self.props as props:
|
|
if "ICAL:calendar-color" not in props:
|
|
props["ICAL:calendar-color"] = "#%x" % randint(0, 255 ** 3 - 1)
|
|
return props["ICAL:calendar-color"]
|
|
|
|
@property
|
|
def headers(self):
|
|
"""Find headers items in collection."""
|
|
header_lines = []
|
|
|
|
lines = unfold(self.text)[1:]
|
|
for line in lines:
|
|
if line.startswith(("BEGIN:", "END:")):
|
|
break
|
|
header_lines.append(Header(line))
|
|
|
|
return header_lines or (
|
|
Header("PRODID:-//Radicale//NONSGML Radicale Server//EN"),
|
|
Header("VERSION:%s" % self.version))
|
|
|
|
@property
|
|
def items(self):
|
|
"""Get list of all items in collection."""
|
|
if self._items is None:
|
|
self._items = self._parse(
|
|
self.text, (Event, Todo, Journal, Card, Timezone))
|
|
return self._items
|
|
|
|
@property
|
|
def timezones(self):
|
|
"""Get list of all timezones in collection."""
|
|
return [
|
|
item for item in self.items.values() if item.tag == Timezone.tag]
|
|
|
|
@property
|
|
def components(self):
|
|
"""Get list of all components in collection."""
|
|
tags = [item_type.tag for item_type in (Event, Todo, Journal, Card)]
|
|
return [item for item in self.items.values() if item.tag in tags]
|
|
|
|
@property
|
|
def owner_url(self):
|
|
"""Get the collection URL according to its owner."""
|
|
return "/%s/" % self.owner if self.owner else None
|
|
|
|
@property
|
|
def url(self):
|
|
"""Get the standard collection URL."""
|
|
return "%s/" % self.path
|
|
|
|
@property
|
|
def version(self):
|
|
"""Get the version of the collection type."""
|
|
return "3.0" if self.tag == "VADDRESSBOOK" else "2.0"
|