49 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			49 lines
		
	
	
		
			1.6 KiB
		
	
	
	
		
			Python
		
	
	
# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector 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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import logging
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import re
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logger = logging.getLogger(__name__)
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def check_3pid_allowed(hs, medium, address):
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    """Checks whether a given format of 3PID is allowed to be used on this HS
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    Args:
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        hs (synapse.server.HomeServer): server
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        medium (str): 3pid medium - e.g. email, msisdn
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        address (str): address within that medium (e.g. "wotan@matrix.org")
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            msisdns need to first have been canonicalised
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    Returns:
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        bool: whether the 3PID medium/address is allowed to be added to this HS
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    """
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    if hs.config.allowed_local_3pids:
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        for constraint in hs.config.allowed_local_3pids:
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            logger.debug(
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                "Checking 3PID %s (%s) against %s (%s)",
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                address, medium, constraint['pattern'], constraint['medium'],
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            )
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            if (
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                medium == constraint['medium'] and
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                re.match(constraint['pattern'], address)
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            ):
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                return True
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    else:
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        return True
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    return False
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