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Fix(LDAPObject): Prevent search attrlist memory error #555

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Fix(LDAPObject): Prevent search attrlist memory error #555

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4e90e3b
test: Test valid and invalid attrlist parameters
jkoeniger Jan 7, 2024
450842d
fix(LDAPObject): Prevent memory errors in attrs_from_List
jkoeniger Jan 7, 2024
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5 changes: 4 additions & 1 deletion Modules/LDAPObject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -288,7 +288,10 @@ attrs_from_List(PyObject *attrlist, char ***attrsp)
if (seq == NULL)
goto error;

len = PySequence_Length(attrlist);
len = PySequence_Size(seq);
if (len == -1) {
goto error;
}

attrs = PyMem_NEW(char *, len + 1);

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33 changes: 33 additions & 0 deletions Tests/t_ldapobject.py
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Original file line number Diff line number Diff line change
Expand Up @@ -478,6 +478,7 @@ def test_dse(self):
[self.server.suffix.encode('utf-8')]
)


def test_compare_s_true(self):
base = self.server.suffix
l = self._ldap_conn
Expand Down Expand Up @@ -569,6 +570,38 @@ def test_slapadd(self):
("myAttribute", b'foobar'),
])

def test_valid_attrlist_parameter_types(self):
"""Tests the case when a valid parameter type is passed to search_ext

Any iterable which only contains strings should not raise any errors.
"""

l = self._ldap_conn

valid_attrlist_parameters = [{"a": "2"}, ["a", "b"], {}, set(), set(["a", "b"])]

for attrlist in valid_attrlist_parameters:
out = l.search_ext(
"%s" % self.server.suffix, ldap.SCOPE_SUBTREE, attrlist=attrlist
)

def test_invalid_attrlist_parameter_types(self):
"""Tests the case when an invalid parameter type is passed to search_ext

Any object type that is either not a interable or does contain something
that isn't a string should raise a TypeError. The exception is the string type itself.
"""

invalid_attrlist_parameters = [{1: 2}, 0, object(), "string"]

l = self._ldap_conn

for attrlist in invalid_attrlist_parameters:
with self.assertRaises(TypeError):
l.search_ext(
"%s" % self.server.suffix, ldap.SCOPE_SUBTREE, attrlist=attrlist
)


class Test01_ReconnectLDAPObject(Test00_SimpleLDAPObject):
"""
Expand Down