def _snmp_scan_cache_description(
binary_host: bool,
*,
backend: ABCSNMPBackend,
) -> None:
if not binary_host:
for oid, name in [
(OID_SYS_DESCR, "system description"),
(OID_SYS_OBJ, "system object"),
]:
value = snmp_modes.get_single_oid(
oid,
backend=backend,
)
if value is None:
raise MKSNMPError(
"Cannot fetch %s OID %s. Please check your SNMP "
"configuration. Possible reason might be: Wrong credentials, "
"wrong SNMP version, Firewall rules, etc." % (name, oid),)
else:
# Fake OID values to prevent issues with a lot of scan functions
console.vverbose(
" Skipping system description OID "
'(Set %s and %s to "")\n',
OID_SYS_DESCR,
OID_SYS_OBJ,
)
snmp_cache.set_single_oid_cache(OID_SYS_DESCR, "")
snmp_cache.set_single_oid_cache(OID_SYS_OBJ, "")
def test_get_single_oid_not_resolvable(backend):
if backend.config.is_usewalk_host:
pytest.skip("Not relevant")
backend.config = backend.config.update(ipaddress="bla.local")
assert snmp_modes.get_single_oid(".1.3.6.1.2.1.1.7.0", backend=backend) is None
def test_get_single_oid_wrong_credentials(backend):
if backend.config.is_usewalk_host:
pytest.skip("Not relevant")
backend.config = backend.config.update(credentials="dingdong")
result = snmp_modes.get_single_oid(".1.3.6.1.2.1.1.1.0", backend=backend)
assert result is None
def test_get_single_oid_cache(backend):
oid = ".1.3.6.1.2.1.1.1.0"
expected_value = "Linux zeus 4.8.6.5-smp #2 SMP Sun Nov 13 14:58:11 CDT 2016 i686"
assert snmp_modes.get_single_oid(oid, backend=backend) == expected_value
assert oid in snmp_cache.single_oid_cache()
cached_oid = snmp_cache.single_oid_cache()[oid]
assert cached_oid == expected_value
assert isinstance(cached_oid, str)
def _prefetch_description_object(*, backend: SNMPBackend) -> None:
for oid, name in (
(OID_SYS_DESCR, "system description"),
(OID_SYS_OBJ, "system object"),
):
if snmp_modes.get_single_oid(oid, backend=backend) is None:
raise MKSNMPError(
"Cannot fetch %s OID %s. Please check your SNMP "
"configuration. Possible reason might be: Wrong credentials, "
"wrong SNMP version, Firewall rules, etc." % (name, oid), )
def test_get_single_oid_ipv6(backend):
if backend.config.is_usewalk_host:
pytest.skip("Not relevant")
backend.config = backend.config.update(
is_ipv6_primary=True,
ipaddress="::1",
)
result = snmp_modes.get_single_oid(".1.3.6.1.2.1.1.1.0", backend=backend)
assert result == "Linux zeus 4.8.6.5-smp #2 SMP Sun Nov 13 14:58:11 CDT 2016 i686"
def test_get_single_oid_snmpv3(backend):
if backend.config.is_usewalk_host:
pytest.skip("Not relevant")
backend.config = backend.config.update(credentials=(
'authNoPriv',
'md5',
'authOnlyUser',
'authOnlyUser',
))
result = snmp_modes.get_single_oid(".1.3.6.1.2.1.1.1.0", backend=backend)
assert result == "Linux zeus 4.8.6.5-smp #2 SMP Sun Nov 13 14:58:11 CDT 2016 i686"
def _evaluate_snmp_detection_atom(atom: SNMPDetectAtom, cp_name: str, do_snmp_scan: bool, *,
backend: ABCSNMPBackend) -> bool:
oid, pattern, flag = atom
value = snmp_modes.get_single_oid(
oid,
cp_name,
do_snmp_scan=do_snmp_scan,
backend=backend,
)
if value is None:
# check for "not_exists"
return pattern == '.*' and not flag
# ignore case!
return bool(regex(pattern, re.IGNORECASE).fullmatch(value)) is flag
def test_get_data_types(backend, type_name, oid, expected_response):
response = snmp_modes.get_single_oid(oid, backend=backend)
assert response == expected_response
assert isinstance(response, str)
oid_start, oid_end = oid.rsplit(".", 1)
table = snmp_table.get_snmp_table(
section_name=SectionName("my_Section"),
oid_info=SNMPTree(base=oid_start, oids=[oid_end]),
backend=backend,
)
assert table[0][0] == expected_response
assert isinstance(table[0][0], str)
def test_get_data_types(backend, type_name, oid, expected_response):
response = snmp_modes.get_single_oid(oid, backend=backend)
assert response == expected_response
assert isinstance(response, str)
oid_start, oid_end = oid.rsplit(".", 1)
table = snmp_table.get_snmp_table(
check_plugin_name="",
oid_info=(oid_start, [oid_end]),
backend=backend,
)
assert table[0][0] == expected_response
assert isinstance(table[0][0], str)
def test_get_data_types(backend, type_name, oid, expected_response):
response = snmp_modes.get_single_oid(oid, backend=backend)
assert response == expected_response
assert isinstance(response, str)
oid_start, oid_end = oid.rsplit(".", 1)
table = snmp_table.get_snmp_table(
section_name=SectionName("my_Section"),
tree=BackendSNMPTree(base=oid_start,
oids=[BackendOIDSpec(oid_end, "string", False)]),
backend=backend,
walk_cache={},
)
assert table[0][0] == expected_response
assert isinstance(table[0][0], str)
def test_get_single_oid_snmpv3_higher_encryption(backend):
if backend.config.is_usewalk_host:
pytest.skip("Not relevant")
backend.config = backend.config.update(
credentials=(
"authPriv",
"SHA-512",
"authPrivUser",
"A_long_authKey",
"DES",
"A_long_privKey",
),
)
# TODO: Reorganize snmp tests: at the moment we create *all* snmpsimd processes at setup
# but with different ports. Those different processes are then used in test_snmp_modes.py and
# backend_snmp.py...
backend.port = 1341
result = snmp_modes.get_single_oid(".1.3.6.1.2.1.1.1.0", backend=backend)
assert result == "Linux zeus 4.8.6.5-smp #2 SMP Sun Nov 13 14:58:11 CDT 2016 i686"
def test_get_single_oid(backend):
result = snmp_modes.get_single_oid(".1.3.6.1.2.1.1.1.0", backend=backend)
assert result == "Linux zeus 4.8.6.5-smp #2 SMP Sun Nov 13 14:58:11 CDT 2016 i686"
assert isinstance(result, str)
def test_get_single_oid_next(backend):
assert snmp_modes.get_single_oid(
".1.3.6.1.2.1.1.9.1.*", backend=backend) == ".1.3.6.1.6.3.10.3.1.1"
def test_get_single_non_prefixed_oid(backend):
with pytest.raises(MKGeneralException, match="does not begin with"):
snmp_modes.get_single_oid("1.3.6.1.2.1.1.1.0", backend=backend)
def test_get_single_oid_not_existing(backend):
assert snmp_modes.get_single_oid(".1.3.100.200.300.400", backend=backend) is None
def test_get_single_oid_value(backend):
assert (
snmp_modes.get_single_oid(".1.3.6.1.2.1.1.9.1.2.1", backend=backend)
== ".1.3.6.1.6.3.10.3.1.1"
)