/usr/lib/python2.7/dist-packages/txdav/caldav/datastore/scheduling/ischedule/remoteservers.py is in calendarserver 5.2+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2006-2014 Apple Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##
from twext.python.filepath import CachingFilePath as FilePath
from twext.python.log import Logger
from twistedcaldav.config import config, fullServerPath
from twistedcaldav import xmlutil
"""
XML based iSchedule configuration file handling. This is for handling of remote servers. The localservers.py module
handles servers that are local (partitioned or podded).
"""
__all__ = [
"IScheduleServers",
]
log = Logger()
class IScheduleServers(object):
_fileInfo = None
_xmlFile = None
_servers = None
_domainMap = None
def __init__(self):
if IScheduleServers._servers is None:
self._loadConfig()
def _loadConfig(self):
if config.Scheduling.iSchedule.RemoteServers:
if IScheduleServers._servers is None:
IScheduleServers._xmlFile = FilePath(
fullServerPath(
config.ConfigRoot,
config.Scheduling.iSchedule.RemoteServers,
)
)
if IScheduleServers._xmlFile.exists():
IScheduleServers._xmlFile.restat()
fileInfo = (IScheduleServers._xmlFile.getmtime(), IScheduleServers._xmlFile.getsize())
if fileInfo != IScheduleServers._fileInfo:
parser = IScheduleServersParser(IScheduleServers._xmlFile)
IScheduleServers._servers = parser.servers
self._mapDomains()
IScheduleServers._fileInfo = fileInfo
else:
IScheduleServers._servers = ()
IScheduleServers._domainMap = {}
else:
IScheduleServers._servers = ()
IScheduleServers._domainMap = {}
def _mapDomains(self):
IScheduleServers._domainMap = {}
for server in IScheduleServers._servers:
for domain in server.domains:
IScheduleServers._domainMap[domain] = server
def mapDomain(self, domain):
"""
Map a calendar user address domain to a suitable server that can
handle server-to-server requests for that user.
"""
return IScheduleServers._domainMap.get(domain)
ELEMENT_SERVERS = "servers"
ELEMENT_SERVER = "server"
ELEMENT_URI = "uri"
ELEMENT_AUTHENTICATION = "authentication"
ATTRIBUTE_TYPE = "type"
ATTRIBUTE_BASICAUTH = "basic"
ELEMENT_USER = "user"
ELEMENT_PASSWORD = "password"
ELEMENT_ALLOW_REQUESTS_FROM = "allow-requests-from"
ELEMENT_ALLOW_REQUESTS_TO = "allow-requests-to"
ELEMENT_DOMAINS = "domains"
ELEMENT_DOMAIN = "domain"
ELEMENT_CLIENT_HOSTS = "hosts"
ELEMENT_HOST = "host"
class IScheduleServersParser(object):
"""
Server-to-server configuration file parser.
"""
def __repr__(self):
return "<%s %r>" % (self.__class__.__name__, self.xmlFile)
def __init__(self, xmlFile):
self.servers = []
# Read in XML
_ignore_etree, servers_node = xmlutil.readXML(xmlFile.path, ELEMENT_SERVERS)
self._parseXML(servers_node)
def _parseXML(self, node):
"""
Parse the XML root node from the server-to-server configuration document.
@param node: the L{Node} to parse.
"""
for child in node:
if child.tag == ELEMENT_SERVER:
self.servers.append(IScheduleServerRecord())
self.servers[-1].parseXML(child)
class IScheduleServerRecord (object):
"""
Contains server-to-server details.
"""
def __init__(self, uri=None, unNormalizeAddresses=True, moreHeaders=[], podding=False):
"""
@param recordType: record type for directory entry.
"""
self.uri = ""
self.authentication = None
self.allow_from = False
self.allow_to = True
self.domains = []
self.client_hosts = []
self.unNormalizeAddresses = unNormalizeAddresses
self.moreHeaders = moreHeaders
self._podding = podding
if uri:
self.uri = uri
self._parseDetails()
def details(self):
return (self.ssl, self.host, self.port, self.path,)
def podding(self):
return self._podding
def redirect(self, location):
"""
Permanent redirect for the lifetime of this record.
"""
self.uri = location
self._parseDetails()
def parseXML(self, node):
for child in node:
if child.tag == ELEMENT_URI:
self.uri = child.text
elif child.tag == ELEMENT_AUTHENTICATION:
self._parseAuthentication(child)
elif child.tag == ELEMENT_ALLOW_REQUESTS_FROM:
self.allow_from = True
elif child.tag == ELEMENT_ALLOW_REQUESTS_TO:
self.allow_to = True
elif child.tag == ELEMENT_DOMAINS:
self._parseList(child, ELEMENT_DOMAIN, self.domains)
elif child.tag == ELEMENT_CLIENT_HOSTS:
self._parseList(child, ELEMENT_HOST, self.client_hosts)
else:
raise RuntimeError("[%s] Unknown attribute: %s" % (self.__class__, child.tag,))
self._parseDetails()
def _parseList(self, node, element_name, appendto):
for child in node:
if child.tag == element_name:
appendto.append(child.text)
def _parseAuthentication(self, node):
if node.get(ATTRIBUTE_TYPE) != ATTRIBUTE_BASICAUTH:
return
for child in node:
if child.tag == ELEMENT_USER:
user = child.text
elif child.tag == ELEMENT_PASSWORD:
password = child.text
self.authentication = ("basic", user, password,)
def _parseDetails(self):
# Extract scheme, host, port and path
if self.uri.startswith("http://"):
self.ssl = False
rest = self.uri[7:]
elif self.uri.startswith("https://"):
self.ssl = True
rest = self.uri[8:]
splits = rest.split("/", 1)
hostport = splits[0].split(":")
self.host = hostport[0]
if len(hostport) > 1:
self.port = int(hostport[1])
else:
self.port = {False: 80, True: 443}[self.ssl]
self.path = "/"
if len(splits) > 1:
self.path += splits[1]
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