126 lines
4.9 KiB
Python
126 lines
4.9 KiB
Python
#
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# This file is part of pysnmp software.
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#
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# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
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# License: http://pysnmp.sf.net/license.html
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#
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import socket
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import sys
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from pysnmp.carrier.asyncore.dgram import udp, udp6, unix
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from pysnmp.hlapi.transport import AbstractTransportTarget
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from pysnmp import error
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__all__ = ['UnixTransportTarget', 'Udp6TransportTarget', 'UdpTransportTarget']
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class UdpTransportTarget(AbstractTransportTarget):
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"""Creates UDP/IPv4 configuration entry and initialize socket API if needed.
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This object can be used for adding new entries to Local Configuration
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Datastore (LCD) managed by :py:class:`~pysnmp.hlapi.SnmpEngine`
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class instance.
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See :RFC:`1906#section-3` for more information on the UDP transport mapping.
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Parameters
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----------
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transportAddr : tuple
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Indicates remote address in Python :py:mod:`socket` module format
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which is a tuple of FQDN, port where FQDN is a string representing
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either hostname or IPv4 address in quad-dotted form, port is an
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integer.
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timeout : int
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Response timeout in seconds.
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retries : int
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Maximum number of request retries, 0 retries means just a single
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request.
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tagList : str
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Arbitrary string that contains a list of tag values which are used
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to select target addresses for a particular operation
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(:RFC:`3413#section-4.1.4`).
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Examples
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--------
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>>> from pysnmp.hlapi.asyncore import UdpTransportTarget
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>>> UdpTransportTarget(('demo.snmplabs.com', 161))
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UdpTransportTarget(('195.218.195.228', 161), timeout=1, retries=5, tagList='')
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>>>
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"""
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transportDomain = udp.domainName
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protoTransport = udp.UdpSocketTransport
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def _resolveAddr(self, transportAddr):
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try:
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return socket.getaddrinfo(transportAddr[0],
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transportAddr[1],
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socket.AF_INET,
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socket.SOCK_DGRAM,
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socket.IPPROTO_UDP)[0][4][:2]
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except socket.gaierror:
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raise error.PySnmpError('Bad IPv4/UDP transport address %s: %s' % (
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'@'.join([str(x) for x in transportAddr]), sys.exc_info()[1]))
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class Udp6TransportTarget(AbstractTransportTarget):
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"""Creates UDP/IPv6 configuration entry and initialize socket API if needed.
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This object can be used for adding new entries to Local Configuration
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Datastore (LCD) managed by :py:class:`~pysnmp.hlapi.SnmpEngine`
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class instance.
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See :RFC:`1906#section-3`, :RFC:`2851#section-4` for more information
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on the UDP and IPv6 transport mapping.
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Parameters
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----------
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transportAddr : tuple
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Indicates remote address in Python :py:mod:`socket` module format
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which is a tuple of FQDN, port where FQDN is a string representing
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either hostname or IPv6 address in one of three conventional forms
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(:RFC:`1924#section-3`), port is an integer.
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timeout : int
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Response timeout in seconds.
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retries : int
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Maximum number of request retries, 0 retries means just a single
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request.
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tagList : str
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Arbitrary string that contains a list of tag values which are used
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to select target addresses for a particular operation
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(:RFC:`3413#section-4.1.4`).
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Examples
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--------
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>>> from pysnmp.hlapi.asyncore import Udp6TransportTarget
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>>> Udp6TransportTarget(('google.com', 161))
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Udp6TransportTarget(('2a00:1450:4014:80a::100e', 161), timeout=1, retries=5, tagList='')
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>>> Udp6TransportTarget(('FEDC:BA98:7654:3210:FEDC:BA98:7654:3210', 161))
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Udp6TransportTarget(('fedc:ba98:7654:3210:fedc:ba98:7654:3210', 161), timeout=1, retries=5, tagList='')
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>>> Udp6TransportTarget(('1080:0:0:0:8:800:200C:417A', 161))
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Udp6TransportTarget(('1080::8:800:200c:417a', 161), timeout=1, retries=5, tagList='')
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>>> Udp6TransportTarget(('::0', 161))
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Udp6TransportTarget(('::', 161), timeout=1, retries=5, tagList='')
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>>> Udp6TransportTarget(('::', 161))
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Udp6TransportTarget(('::', 161), timeout=1, retries=5, tagList='')
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>>>
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"""
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transportDomain = udp6.domainName
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protoTransport = udp6.Udp6SocketTransport
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def _resolveAddr(self, transportAddr):
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try:
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return socket.getaddrinfo(transportAddr[0],
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transportAddr[1],
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socket.AF_INET6,
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socket.SOCK_DGRAM,
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socket.IPPROTO_UDP)[0][4][:2]
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except socket.gaierror:
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raise error.PySnmpError('Bad IPv6/UDP transport address %s: %s' % (
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'@'.join([str(x) for x in transportAddr]), sys.exc_info()[1]))
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class UnixTransportTarget(AbstractTransportTarget):
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transportDomain = unix.domainName
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protoTransport = unix.UnixSocketTransport
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