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https://github.com/element-hq/synapse.git
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80 lines
2.5 KiB
Python
80 lines
2.5 KiB
Python
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# -*- coding: utf-8 -*-
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# Copyright 2014 matrix.org
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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", "is_mine"))
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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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'is_mine' : Boolean indicating if the domain name is recognised by the
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HomeServer as being its own
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"""
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@classmethod
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def from_string(cls, s, hs):
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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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is_mine = domain == hs.hostname
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return cls(localpart=parts[0], domain=domain, is_mine=is_mine)
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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_local(cls, localpart, hs):
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"""Create a structure on the local domain"""
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return cls(localpart=localpart, domain=hs.hostname, is_mine=True)
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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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