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124 lines
3.4 KiB
124 lines
3.4 KiB
# -*- coding: utf-8 -*-
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# Copyright 2014, 2015 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from synapse.api.errors import SynapseError
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from collections import namedtuple
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class DomainSpecificString(
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namedtuple("DomainSpecificString", ("localpart", "domain"))
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):
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"""Common base class among ID/name strings that have a local part and a
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domain name, prefixed with a sigil.
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Has the fields:
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'localpart' : The local part of the name (without the leading sigil)
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'domain' : The domain part of the name
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"""
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# Deny iteration because it will bite you if you try to create a singleton
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# set by:
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# users = set(user)
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def __iter__(self):
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raise ValueError("Attempted to iterate a %s" % (type(self).__name__,))
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# Because this class is a namedtuple of strings and booleans, it is deeply
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# immutable.
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def __copy__(self):
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return self
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def __deepcopy__(self, memo):
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return self
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@classmethod
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def from_string(cls, s):
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"""Parse the string given by 's' into a structure object."""
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if s[0] != cls.SIGIL:
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raise SynapseError(400, "Expected %s string to start with '%s'" % (
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cls.__name__, cls.SIGIL,
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))
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parts = s[1:].split(':', 1)
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if len(parts) != 2:
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raise SynapseError(
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400, "Expected %s of the form '%slocalname:domain'" % (
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cls.__name__, cls.SIGIL,
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)
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)
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domain = parts[1]
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# This code will need changing if we want to support multiple domain
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# names on one HS
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return cls(localpart=parts[0], domain=domain)
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def to_string(self):
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"""Return a string encoding the fields of the structure object."""
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return "%s%s:%s" % (self.SIGIL, self.localpart, self.domain)
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@classmethod
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def create(cls, localpart, domain,):
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return cls(localpart=localpart, domain=domain)
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class UserID(DomainSpecificString):
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"""Structure representing a user ID."""
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SIGIL = "@"
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class RoomAlias(DomainSpecificString):
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"""Structure representing a room name."""
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SIGIL = "#"
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class RoomID(DomainSpecificString):
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"""Structure representing a room id. """
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SIGIL = "!"
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class EventID(DomainSpecificString):
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"""Structure representing an event id. """
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SIGIL = "$"
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class StreamToken(
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namedtuple(
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"Token",
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("room_key", "presence_key", "typing_key")
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)
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):
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_SEPARATOR = "_"
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@classmethod
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def from_string(cls, string):
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try:
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keys = string.split(cls._SEPARATOR)
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return cls(*keys)
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except:
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raise SynapseError(400, "Invalid Token")
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def to_string(self):
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return self._SEPARATOR.join([str(k) for k in self])
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def copy_and_replace(self, key, new_value):
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d = self._asdict()
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d[key] = new_value
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return StreamToken(**d)
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ClientInfo = namedtuple("ClientInfo", ("device_id", "token_id"))
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