57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
from typing import Union, List
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import ldap3
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from zope import component
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from zope.interface import implementer
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from .UWLDAPRecord import UWLDAPRecord
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from .utils import dn_to_uid
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from ceo_common.interfaces import IUWLDAPService, IConfig
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@implementer(IUWLDAPService)
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class UWLDAPService:
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def __init__(self):
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cfg = component.getUtility(IConfig)
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self.uwldap_server_url = cfg.get('uwldap_server_url')
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self.uwldap_base = cfg.get('uwldap_base')
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def _get_conn(self) -> ldap3.Connection:
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return ldap3.Connection(
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self.uwldap_server_url, auto_bind=True, read_only=True,
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raise_exceptions=True)
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def get_user(self, username: str) -> Union[UWLDAPRecord, None]:
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conn = self._get_conn()
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conn.search(
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self.uwldap_base, f'(uid={username})',
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attributes=UWLDAPRecord.ldap_attributes, size_limit=1)
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if not conn.entries:
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return None
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return UWLDAPRecord.deserialize_from_ldap(conn.entries[0])
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def get_programs_for_users(self, usernames: List[str]) -> List[Union[str, None]]:
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filter_str = '(|' + ''.join([f'(uid={uid})' for uid in usernames]) + ')'
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programs = [None] * len(usernames)
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user_indices = {uid: i for i, uid in enumerate(usernames)}
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conn = self._get_conn()
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conn.search(
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self.uwldap_base, filter_str, attributes=['ou', 'uid'],
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size_limit=len(usernames))
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for entry in conn.entries:
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# some records in UWLDAP have two UIDs because UIDs
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# were historically limited to 8 characters
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uid = None
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for uw_uid in entry.uid.values:
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if uw_uid in user_indices:
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uid = uw_uid
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break
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# sanity check
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assert uid is not None
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idx = user_indices[uid]
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program = entry.ou.value
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if program:
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programs[idx] = program
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return programs
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