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LDAP paging support #175

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58 changes: 33 additions & 25 deletions python/multicorn/ldapfdw.py
Original file line number Diff line number Diff line change
Expand Up @@ -56,16 +56,16 @@
);

CREATE FOREIGN TABLE ldapexample (
mail character varying,
cn character varying,
description character varying
mail character varying,
cn character varying,
description character varying
) server ldap_srv options (
uri 'ldap://localhost',
path 'dc=lab,dc=example,dc=com',
scope 'sub',
binddn 'cn=Admin,dc=example,dc=com',
bindpwd 'admin',
objectClass '*'
uri 'ldap://localhost',
path 'dc=lab,dc=example,dc=com',
scope 'sub',
binddn 'cn=Admin,dc=example,dc=com',
bindpwd 'admin',
objectClass '*'
);

select * from ldapexample;
Expand Down Expand Up @@ -150,24 +150,32 @@ def execute(self, quals, columns):
val = qual.value
request = unicode_("(&%s(%s=%s))") % (
request, qual.field_name, val)
self.ldap.search(
self.path, request, self.scope,
attributes=list(self.field_definitions))
for entry in self.ldap.response:
# Case insensitive lookup for the attributes
litem = dict()
for key, value in entry["attributes"].items():
if key.lower() in self.field_definitions:
pgcolname = self.field_definitions[key.lower()].column_name
if ldap3.version.__version__ > '2.0.0':
value = value
else:
if pgcolname in self.array_columns:
cookie = None
while True:
self.ldap.search(
self.path, request, self.scope,
attributes=list(self.field_definitions),
paged_size=1000,
paged_cookie=cookie)
for entry in self.ldap.response:
# Case insensitive lookup for the attributes
litem = dict()
for key, value in entry["attributes"].items():
if key.lower() in self.field_definitions:
pgcolname = self.field_definitions[key.lower()].column_name
if ldap3.version.__version__ > '2.0.0':
value = value
else:
value = value[0]
litem[pgcolname] = value
yield litem
if pgcolname in self.array_columns:
value = value
else:
value = value[0]
litem[pgcolname] = value
yield litem
# pagedResultsControl, see RFC 2696
cookie = self.ldap.result['controls']['1.2.840.113556.1.4.319']['value']['cookie']
if not cookie:
break

def parse_scope(self, scope=None):
if scope in (None, "", "one"):
Expand Down