Python puresnmp walk windows已安装软件软件名称中文和安装时间正确显示方法

SNMP日期解码与网络设备信息检索

最新推荐文章于 2024-03-25 22:58:57 发布

原创最新推荐文章于 2024-03-25 22:58:57 发布 · 334 阅读

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本文介绍了一种使用Python从网络设备获取SNMP数据的方法，并详细解释了如何解析SNMP时间戳格式。此外，还展示了如何通过SNMP协议读取特定OID的数据，包括日期解码和字符串解码。

from puresnmp import walk
import struct, pytz, datetime


def decode_snmp_date(octetstr: bytes) -> datetime.datetime:
    size = len(octetstr)
    if size == 8:
        (year, month, day, hour, minutes,
         seconds, deci_seconds,
         ) = struct.unpack('>HBBBBBB', octetstr)
        return datetime.datetime(
            year, month, day, hour, minutes, seconds,
            deci_seconds * 100_000, tzinfo=pytz.utc)
    elif size == 11:
        (year, month, day, hour, minutes,
         seconds, deci_seconds, direction,
         hours_from_utc, minutes_from_utc,
         ) = struct.unpack('>HBBBBBBcBB', octetstr)
        offset = datetime.timedelta(
            hours=hours_from_utc, minutes=minutes_from_utc)
        if direction == b'-':
            offset = -offset
        return datetime.datetime(
            year, month, day, hour, minutes, seconds,
            deci_seconds * 100_000, tzinfo=pytz.utc) + offset
    raise ValueError("The provided OCTETSTR is not a valid SNMP date")


IP = "127.0.0.1"
COMMUNITY = 'public'
OID = '1.3.6.1.2.1.25.6.3.1'

for row in walk(IP, COMMUNITY, OID):

    if (str(row.oid)).__contains__("1.3.6.1.2.1.25.6.3.1.2"):
        print(row.oid, ' = ', row.value.decode('GBK', 'strict'))
    elif (str(row.oid)).__contains__("1.3.6.1.2.1.25.6.3.1.5"):
        print(row.oid, ' = ', decode_snmp_date(row.value))
    else:
        print(row.oid, ' = ', row.value)