|
1
|
|
|
# |
|
2
|
|
|
# This file is part of Glances. |
|
3
|
|
|
# |
|
4
|
|
|
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <[email protected]> |
|
5
|
|
|
# |
|
6
|
|
|
# SPDX-License-Identifier: LGPL-3.0-only |
|
7
|
|
|
# |
|
8
|
|
|
|
|
9
|
|
|
import sys |
|
10
|
|
|
|
|
11
|
|
|
from glances.logger import logger |
|
12
|
|
|
|
|
13
|
|
|
# Import mandatory PySNMP lib |
|
14
|
|
|
try: |
|
15
|
|
|
from pysnmp.entity.rfc3413.oneliner import cmdgen |
|
16
|
|
|
except ImportError: |
|
17
|
|
|
logger.critical("PySNMP library not found. To install it: pip install pysnmp") |
|
18
|
|
|
sys.exit(2) |
|
19
|
|
|
|
|
20
|
|
|
|
|
21
|
|
|
class GlancesSNMPClient: |
|
22
|
|
|
"""SNMP client class (based on pysnmp library).""" |
|
23
|
|
|
|
|
24
|
|
|
def __init__(self, host='localhost', port=161, version='2c', community='public', user='private', auth=''): |
|
25
|
|
|
super().__init__() |
|
26
|
|
|
self.cmdGen = cmdgen.CommandGenerator() |
|
27
|
|
|
|
|
28
|
|
|
self.version = version |
|
29
|
|
|
|
|
30
|
|
|
self.host = host |
|
31
|
|
|
self.port = port |
|
32
|
|
|
|
|
33
|
|
|
self.community = community |
|
34
|
|
|
self.user = user |
|
35
|
|
|
self.auth = auth |
|
36
|
|
|
|
|
37
|
|
|
def __buid_result(self, varBinds): |
|
38
|
|
|
"""Build the results.""" |
|
39
|
|
|
ret = {} |
|
40
|
|
|
for name, val in varBinds: |
|
41
|
|
|
if str(val) == '': |
|
|
|
|
|
|
42
|
|
|
ret[str(name)] = '' |
|
43
|
|
|
else: |
|
44
|
|
|
ret[str(name)] = val.prettyPrint() |
|
45
|
|
|
return ret |
|
46
|
|
|
|
|
47
|
|
|
def __get_result__(self, errorIndication, errorStatus, errorIndex, varBinds): |
|
48
|
|
|
"""Put results in table.""" |
|
49
|
|
|
ret = {} |
|
50
|
|
|
if not errorIndication or not errorStatus: |
|
51
|
|
|
ret = self.__buid_result(varBinds) |
|
52
|
|
|
return ret |
|
53
|
|
|
|
|
54
|
|
|
def get_by_oid(self, *oid): |
|
55
|
|
|
"""SNMP simple request (list of OID). |
|
56
|
|
|
|
|
57
|
|
|
One request per OID list. |
|
58
|
|
|
|
|
59
|
|
|
:param oid: oid list |
|
60
|
|
|
:return: a dict |
|
61
|
|
|
""" |
|
62
|
|
|
if self.version == '3': |
|
63
|
|
|
errorIndication, errorStatus, errorIndex, varBinds = self.cmdGen.getCmd( |
|
64
|
|
|
cmdgen.UsmUserData(self.user, self.auth), cmdgen.UdpTransportTarget((self.host, self.port)), *oid |
|
65
|
|
|
) |
|
66
|
|
|
else: |
|
67
|
|
|
errorIndication, errorStatus, errorIndex, varBinds = self.cmdGen.getCmd( |
|
68
|
|
|
cmdgen.CommunityData(self.community), cmdgen.UdpTransportTarget((self.host, self.port)), *oid |
|
69
|
|
|
) |
|
70
|
|
|
return self.__get_result__(errorIndication, errorStatus, errorIndex, varBinds) |
|
71
|
|
|
|
|
72
|
|
|
def __bulk_result__(self, errorIndication, errorStatus, errorIndex, varBindTable): |
|
73
|
|
|
ret = [] |
|
74
|
|
|
if not errorIndication or not errorStatus: |
|
75
|
|
|
for varBindTableRow in varBindTable: |
|
76
|
|
|
ret.append(self.__buid_result(varBindTableRow)) |
|
77
|
|
|
return ret |
|
78
|
|
|
|
|
79
|
|
|
def getbulk_by_oid(self, non_repeaters, max_repetitions, *oid): |
|
80
|
|
|
"""SNMP getbulk request. |
|
81
|
|
|
|
|
82
|
|
|
In contrast to snmpwalk, this information will typically be gathered in |
|
83
|
|
|
a single transaction with the agent, rather than one transaction per |
|
84
|
|
|
variable found. |
|
85
|
|
|
|
|
86
|
|
|
* non_repeaters: This specifies the number of supplied variables that |
|
87
|
|
|
should not be iterated over. |
|
88
|
|
|
* max_repetitions: This specifies the maximum number of iterations over |
|
89
|
|
|
the repeating variables. |
|
90
|
|
|
* oid: oid list |
|
91
|
|
|
> Return a list of dicts |
|
92
|
|
|
""" |
|
93
|
|
|
if self.version.startswith('3'): |
|
94
|
|
|
errorIndication, errorStatus, errorIndex, varBinds = self.cmdGen.getCmd( |
|
95
|
|
|
cmdgen.UsmUserData(self.user, self.auth), |
|
96
|
|
|
cmdgen.UdpTransportTarget((self.host, self.port)), |
|
97
|
|
|
non_repeaters, |
|
98
|
|
|
max_repetitions, |
|
99
|
|
|
*oid, |
|
100
|
|
|
) |
|
101
|
|
|
if self.version.startswith('2'): |
|
102
|
|
|
errorIndication, errorStatus, errorIndex, varBindTable = self.cmdGen.bulkCmd( |
|
103
|
|
|
cmdgen.CommunityData(self.community), |
|
104
|
|
|
cmdgen.UdpTransportTarget((self.host, self.port)), |
|
105
|
|
|
non_repeaters, |
|
106
|
|
|
max_repetitions, |
|
107
|
|
|
*oid, |
|
108
|
|
|
) |
|
109
|
|
|
else: |
|
110
|
|
|
# Bulk request are not available with SNMP version 1 |
|
111
|
|
|
return [] |
|
112
|
|
|
return self.__bulk_result__(errorIndication, errorStatus, errorIndex, varBindTable) |
|
113
|
|
|
|
nicolargo /
glances
Loading history...