Add CAS_FEDERATE_PROVIDERS_LIST to settings parameters
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		@@ -1,3 +1,4 @@
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# ⁻*- coding: utf-8 -*-
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License version 3 for
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@@ -86,24 +87,26 @@ setting_default('CAS_FEDERATE_REMEMBER_TIMEOUT', 604800)  # one week
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if settings.CAS_FEDERATE:
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    settings.CAS_AUTH_CLASS = "cas_server.auth.CASFederateAuth"
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__CAS_FEDERATE_PROVIDERS_LIST = list(settings.CAS_FEDERATE_PROVIDERS.keys())
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#  create CAS_FEDERATE_PROVIDERS_LIST default value if not set: list of
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#  the keys of CAS_FEDERATE_PROVIDERS in natural order: 2 < 10 < 20 < a = A < … < z = Z
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try:
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    getattr(settings, 'CAS_FEDERATE_PROVIDERS_LIST')
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except AttributeError:
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    __CAS_FEDERATE_PROVIDERS_LIST = list(settings.CAS_FEDERATE_PROVIDERS.keys())
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    def __CAS_FEDERATE_PROVIDERS_LIST_sort(key):
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        if len(settings.CAS_FEDERATE_PROVIDERS[key]) > 2:
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            key = settings.CAS_FEDERATE_PROVIDERS[key][2].lower()
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        else:
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            key = key.lower()
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        if isinstance(key, six.string_types) or isinstance(key, six.text_type):
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            return tuple(
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                int(num) if num else alpha
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                for num, alpha in __CAS_FEDERATE_PROVIDERS_LIST_sort.tokenize(key)
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            )
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        else:
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            return key
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    __CAS_FEDERATE_PROVIDERS_LIST_sort.tokenize = re.compile(r'(\d+)|(\D+)').findall
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    __CAS_FEDERATE_PROVIDERS_LIST.sort(key=__CAS_FEDERATE_PROVIDERS_LIST_sort)
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def __CAS_FEDERATE_PROVIDERS_LIST_sort(key):
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    if len(settings.CAS_FEDERATE_PROVIDERS[key]) > 2:
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        key = settings.CAS_FEDERATE_PROVIDERS[key][2].lower()
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    else:
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        key = key.lower()
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    if isinstance(key, six.string_types) or isinstance(key, six.text_type):
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        return tuple(
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            int(num) if num else alpha
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            for num, alpha in __CAS_FEDERATE_PROVIDERS_LIST_sort.tokenize(key)
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        )
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    else:
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        return key
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__CAS_FEDERATE_PROVIDERS_LIST_sort.tokenize = re.compile(r'(\d+)|(\D+)').findall
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__CAS_FEDERATE_PROVIDERS_LIST.sort(key=__CAS_FEDERATE_PROVIDERS_LIST_sort)
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settings.CAS_FEDERATE_PROVIDERS_LIST = __CAS_FEDERATE_PROVIDERS_LIST
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    setting_default('CAS_FEDERATE_PROVIDERS_LIST', __CAS_FEDERATE_PROVIDERS_LIST)
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