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|
#! /usr/bin/python
# Copyright 2014 Linaro Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
import logging
import pexpect
import sys
import re
if __name__ == '__main__':
import os
vlandpath = os.path.abspath(os.path.normpath(os.path.dirname(sys.argv[0])))
sys.path.insert(0, vlandpath)
sys.path.insert(0, "%s/.." % vlandpath)
from errors import InputError, PExpectError
from drivers.common import SwitchDriver, SwitchErrors
class TPLinkTLSG2XXX(SwitchDriver):
connection = None
_username = None
_password = None
_enable_password = None
_capabilities = [
]
# Regexp of expected hardware information - fail if we don't see
# this
_expected_descr_re = re.compile(r'TL-SG2\d\d\d')
def __init__(self, switch_hostname, switch_telnetport=23, debug=False):
SwitchDriver.__init__(self, switch_hostname, debug)
self._systemdata = []
self.exec_string = "/usr/bin/telnet %s %d" % (switch_hostname, switch_telnetport)
self.errors = SwitchErrors()
################################
### Switch-level API functions
################################
# Save the current running config into flash - we want config to
# remain across reboots
def switch_save_running_config(self):
try:
self._cli("copy running-config startup-config")
self.connection.expect("OK")
except (PExpectError, pexpect.EOF):
# recurse on error
self._switch_connect()
self.switch_save_running_config()
# Restart the switch - we need to reload config to do a
# roll-back. Do NOT save running-config first if the switch asks -
# we're trying to dump recent changes, not save them.
#
# This will also implicitly cause a connection to be closed
def switch_restart(self):
self._cli("reboot")
index = self.connection.expect(['Daving current', 'Continue?'])
if index == 0:
self._cli("n") # No, don't save
self.connection.expect("Continue?")
# Fall through
self._cli("y") # Yes, continue to reset
self.connection.close(True)
# List the capabilities of the switch (and driver) - some things
# make no sense to abstract. Returns a dict of strings, each one
# describing an extra feature that that higher levels may care
# about
def switch_get_capabilities(self):
return self._capabilities
################################
### VLAN API functions
################################
# Create a VLAN with the specified tag
def vlan_create(self, tag):
logging.debug("Creating VLAN %d", tag)
try:
self._configure()
self._cli("vlan %d" % tag)
self._end_configure()
# Validate it happened
vlans = self.vlan_get_list()
for vlan in vlans:
if vlan == tag:
return
raise IOError("Failed to create VLAN %d" % tag)
except PExpectError:
# recurse on error
self._switch_connect()
self.vlan_create(tag)
# Destroy a VLAN with the specified tag
def vlan_destroy(self, tag):
logging.debug("Destroying VLAN %d", tag)
try:
self._configure()
self._cli("no vlan %d" % tag)
self._end_configure()
# Validate it happened
vlans = self.vlan_get_list()
for vlan in vlans:
if vlan == tag:
raise IOError("Failed to destroy VLAN %d" % tag)
except PExpectError:
# recurse on error
self._switch_connect()
self.vlan_destroy(tag)
# Set the name of a VLAN
def vlan_set_name(self, tag, name):
logging.debug("Setting name of VLAN %d to %s", tag, name)
try:
self._configure()
self._cli("vlan %d" % tag)
self._cli("name %s" % name)
self._end_configure()
# Validate it happened
read_name = self.vlan_get_name(tag)
if read_name != name:
raise IOError("Failed to set name for VLAN %d (name found is \"%s\", not \"%s\")"
% (tag, read_name, name))
except (PExpectError, pexpect.EOF):
# recurse on error
self._switch_connect()
self.vlan_set_name(tag, name)
# Get a list of the VLAN tags currently registered on the switch
def vlan_get_list(self):
logging.debug("Grabbing list of VLANs")
try:
vlans = []
regex = re.compile(r'^ *(\d+).*active')
self._cli("show vlan brief")
for line in self._read_long_output("show vlan brief"):
match = regex.match(line)
if match:
vlans.append(int(match.group(1)))
return vlans
except PExpectError:
# recurse on error
self._switch_connect()
return self.vlan_get_list()
# For a given VLAN tag, ask the switch what the associated name is
def vlan_get_name(self, tag):
logging.debug("Grabbing the name of VLAN %d", tag)
try:
name = None
regex = re.compile(r'^ *\d+\s+(\S+).*(active)')
self._cli("show vlan id %d" % tag)
for line in self._read_long_output("show vlan id"):
match = regex.match(line)
if match:
name = match.group(1)
name.strip()
return name
except PExpectError:
# recurse on error
self._switch_connect()
return self.vlan_get_name(tag)
################################
### Port API functions
################################
# Set the mode of a port: access or trunk
def port_set_mode(self, port, mode):
logging.debug("Setting port %s to %s", port, mode)
if not self._is_port_mode_valid(mode):
raise IndexError("Port mode %s is not allowed" % mode)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
# This switch does not support specific modes, so we can't
# actually change the mode directly. However, we can and
# should deal with the PVID and memberships of existing VLANs
try:
# We define a trunk to be on *all* VLANs on the switch in
# tagged mode, and PVID should match the default VLAN (1).
if mode == "trunk":
# Disconnect all the untagged ports
read_vlans = self._port_get_all_vlans(port, 'Untagged')
for vlan in read_vlans:
self._port_remove_general_vlan(port, vlan)
# And move to VLAN 1
self.port_add_trunk_to_vlan(port, 1)
self._set_pvid(port, 1)
# And an access port should only be on one VLAN. Move to
# VLAN 1, untagged, and set PVID there.
if mode == "access":
# Disconnect all the ports
read_vlans = self._port_get_all_vlans(port, 'Untagged')
for vlan in read_vlans:
self._port_remove_general_vlan(port, vlan)
read_vlans = self._port_get_all_vlans(port, 'Tagged')
for vlan in read_vlans:
self._port_remove_general_vlan(port, vlan)
# And move to VLAN 1
self.port_set_access_vlan(port, 1)
self._set_pvid(port, 1)
# Validate it happened
read_mode = self._port_get_mode(port)
if read_mode != mode:
raise IOError("Failed to set mode for port %s" % port)
# And cache the result
self._port_modes[port] = mode
except (PExpectError, pexpect.EOF):
# recurse on error
self._switch_connect()
self.port_set_mode(port, mode)
# Set an access port to be in a specified VLAN (tag)
def port_set_access_vlan(self, port, tag):
logging.debug("Setting access port %s to VLAN %d", port, tag)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
# Does the VLAN already exist?
vlan_list = self.vlan_get_list()
if not tag in vlan_list:
raise IndexError("VLAN tag %d not recognised" % tag)
try:
# Add the new VLAN
self._configure()
self._cli("interface %s" % self._long_port_name(port))
self._cli("switchport general allowed vlan %d untagged" % tag)
self._cli("no shutdown")
self._end_configure()
self._set_pvid(port, tag)
# Now drop all the other VLANs
read_vlans = self._port_get_all_vlans(port, 'Untagged')
for vlan in read_vlans:
if vlan != tag:
self._port_remove_general_vlan(port, vlan)
# Finally, validate things worked
read_vlan = int(self.port_get_access_vlan(port))
if read_vlan != tag:
raise IOError("Failed to move access port %s to VLAN %d - got VLAN %d instead"
% (port, tag, read_vlan))
except PExpectError:
# recurse on error
self._switch_connect()
self.port_set_access_vlan(port, tag)
# Add a trunk port to a specified VLAN (tag)
def port_add_trunk_to_vlan(self, port, tag):
logging.debug("Adding trunk port %s to VLAN %d", port, tag)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
try:
self._configure()
self._cli("interface %s" % self._long_port_name(port))
self._cli("switchport general allowed vlan %d tagged" % tag)
self._end_configure()
# Validate it happened
read_vlans = self.port_get_trunk_vlan_list(port)
for vlan in read_vlans:
if vlan == tag or vlan == "ALL":
return
raise IOError("Failed to add trunk port %s to VLAN %d" % (port, tag))
except PExpectError:
# recurse on error
self._switch_connect()
self.port_add_trunk_to_vlan(port, tag)
# Remove a trunk port from a specified VLAN (tag)
def port_remove_trunk_from_vlan(self, port, tag):
logging.debug("Removing trunk port %s from VLAN %d", port, tag)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
try:
self._configure()
self._cli("interface %s" % self._long_port_name(port))
self._cli("no switchport general allowed vlan %d" % tag)
self._end_configure()
# Validate it happened
read_vlans = self.port_get_trunk_vlan_list(port)
for vlan in read_vlans:
if vlan == tag:
raise IOError("Failed to remove trunk port %s from VLAN %d" % (port, tag))
except PExpectError:
# recurse on error
self._switch_connect()
self.port_remove_trunk_from_vlan(port, tag)
# Get the configured VLAN tag for an access port (i.e. a port not
# configured for tagged egress)
def port_get_access_vlan(self, port):
logging.debug("Getting VLAN for access port %s", port)
vlan = 1
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
regex = re.compile(r'(\d+)\s+.*Untagged')
try:
self._cli("show interface switchport %s" % self._long_port_name(port))
for line in self._read_long_output("show interface switchport"):
match = regex.match(line)
if match:
vlan = match.group(1)
return int(vlan)
except PExpectError:
# recurse on error
self._switch_connect()
return self.port_get_access_vlan(port)
# Get the list of configured VLAN tags for a trunk port
def port_get_trunk_vlan_list(self, port):
logging.debug("Getting VLANs for trunk port %s", port)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
return self._port_get_all_vlans(port, 'Tagged')
################################
### Internal functions
################################
# Connect to the switch and log in
def _switch_connect(self):
if not self.connection is None:
self.connection.close(True)
self.connection = None
logging.debug("Connecting to Switch with: %s", self.exec_string)
self.connection = pexpect.spawn(self.exec_string, logfile=self.logger)
self._login()
# No way to avoid paged output on this switch AFAICS
# And grab details about the switch. in case we need it
self._get_systemdata()
# And also validate them - make sure we're driving a switch of
# the correct model! Also store the serial number
descr_regex = re.compile(r'Hardware Version\s+ - (.*)')
descr = ""
for line in self._systemdata:
match = descr_regex.match(line)
if match:
descr = match.group(1)
logging.debug("system description is %s", descr)
if not self._expected_descr_re.match(descr):
raise IOError("Switch %s not recognised by this driver: abort" % descr)
# Now build a list of our ports, for later sanity checking
self._ports = self._get_port_names()
if len(self._ports) < 4:
raise IOError("Not enough ports detected - problem!")
def _login(self):
logging.debug("attempting login with username \"%s\", password \"%s\", enable_password \"%s\"", self._username, self._password, self._enable_password)
self.connection.expect('User Access Login')
if self._username is not None:
self.connection.expect("User:")
self._cli("%s" % self._username)
if self._password is not None:
self.connection.expect("Password:")
self._cli("%s" % self._password, False)
while True:
index = self.connection.expect(['User Name:', 'Password:', 'Bad passwords', 'authentication failed', r'(.*)(#|>)'])
if index != 4: # Any other means: failed to log in!
logging.error("Login failure: index %d\n", index)
logging.error("Login failure: %s\n", self.connection.match.before)
raise IOError
# else
self._prompt_name = re.escape(self.connection.match.group(1).strip())
if self.connection.match.group(2) == ">":
# Need to enter "enable" mode too
self._cli("")
self._cli("enable")
if self._enable_password is not None and len(self._enable_password) > 0:
self.connection.expect("Password:")
self._cli("%s" % self._enable_password, False)
index = self.connection.expect(['Password:', 'Bad passwords', 'authentication failed', r'(.*)(#|>)'])
if index != 3: # Any other means: failed to log in!
logging.error("Enable password failure: %s\n", self.connection.match)
raise IOError
return 0
def _logout(self):
logging.debug("Logging out")
self._cli("exit", False)
def _configure(self):
self._cli("configure")
def _end_configure(self):
self._cli("end")
def _read_long_output(self, text):
longbuf = []
prompt = self._prompt_name + '#'
while True:
try:
index = self.connection.expect(['^Press any key to continue', prompt])
if index == 0: # "Press any key to continue (Q to quit)"
for line in self.connection.before.split('\r\n'):
line1 = re.sub('(\x08|\x0D)*', '', line.strip())
longbuf.append(line1)
self._cli(' ', False)
elif index == 1: # Back to a prompt, says output is finished
break
except (pexpect.EOF, pexpect.TIMEOUT):
# Something went wrong; logout, log in and try again!
logging.error("PEXPECT FAILURE, RECONNECT")
self.errors.log_error_in(text)
raise PExpectError("_read_long_output failed")
except:
logging.error("prompt is \"%s\"", prompt)
raise
for line in self.connection.before.split('\r\n'):
line1 = re.sub('(\x08|\x0D)*', '', line.strip())
longbuf.append(line1)
return longbuf
def _long_port_name(self, port):
return re.sub('Gi', 'gigabitEthernet ', port)
def _set_pvid(self, port, pvid):
# Set a port's PVID
self._configure()
self._cli("interface %s" % self._long_port_name(port))
self._cli("switchport pvid %d" % pvid)
self._end_configure()
def _port_get_all_vlans(self, port, port_type):
vlans = []
regex = re.compile(r'(\d+)\s+.*' + port_type)
try:
self._cli("show interface switchport %s" % self._long_port_name(port))
for line in self._read_long_output("show interface switchport"):
match = regex.match(line)
if match:
vlan = match.group(1)
vlans.append(int(vlan))
return vlans
except PExpectError:
# recurse on error
self._switch_connect()
return self._port_get_all_vlans(port, port_type)
def _port_remove_general_vlan(self, port, tag):
try:
self._configure()
self._cli("interface %s" % self._long_port_name(port))
self._cli("no switchport general allowed vlan %d" % tag)
self._end_configure()
except PExpectError:
# recurse on error
self._switch_connect()
return self._port_remove_general_vlan(port, tag)
def _get_port_names(self):
logging.debug("Grabbing list of ports")
interfaces = []
# Use "Link" to only identify lines in the output that match
# interfaces that exist - it'll match "LinkUp" and "LinkDown"
regex = re.compile(r'^\s*([a-zA-Z0-9_/]*).*Link')
try:
self._cli("show interface status")
for line in self._read_long_output("show interface status"):
match = regex.match(line)
if match:
interface = match.group(1)
interfaces.append(interface)
self._port_numbers[interface] = len(interfaces)
logging.debug(" found %d ports on the switch", len(interfaces))
return interfaces
except PExpectError:
# recurse on error
self._switch_connect()
return self._get_port_names()
# Get the mode of a port: access or trunk
def _port_get_mode(self, port):
logging.debug("Getting mode of port %s", port)
if not self._is_port_name_valid(port):
raise IndexError("Port name %s not recognised" % port)
# This switch does not support specific modes, so we have to
# make stuff up here. We define trunk ports to be on (1 or
# many) tagged VLANs, anything not tagged to be access.
read_vlans = self._port_get_all_vlans(port, 'Tagged')
if len(read_vlans) > 0:
return "trunk"
else:
return "access"
def _show_config(self):
logging.debug("Grabbing config")
self._cli("show running-config")
return self._read_long_output("show running-config")
def _show_clock(self):
logging.debug("Grabbing time")
self._cli("show system-time")
return self._read_long_output("show system-time")
def _get_systemdata(self):
logging.debug("Grabbing system sw and hw versions")
self._cli("show system-info")
self._systemdata = []
for line in self._read_long_output("show system-info"):
self._systemdata.append(line)
# Wrapper around connection.send - by default, expect() the same
# text we've sent, to remove it from the output from the
# switch. For the few cases where we don't need that, override
# this using echo=False.
# Horrible, but seems to work.
def _cli(self, text, echo=True):
self.connection.send(text + '\r')
if echo:
self.connection.expect(text)
if __name__ == "__main__":
import optparse
switch = '10.172.2.50'
parser = optparse.OptionParser()
parser.add_option("--switch",
dest = "switch",
action = "store",
nargs = 1,
type = "string",
help = "specify switch to connect to for testing",
metavar = "<switch>")
(opts, args) = parser.parse_args()
if opts.switch:
switch = opts.switch
logging.basicConfig(level = logging.DEBUG,
format = '%(asctime)s %(levelname)-8s %(message)s')
p = TPLinkTLSG2XXX(switch, 23, debug = False)
p.switch_connect('admin', 'admin', None)
print "Ports are:"
buf = p.switch_get_port_names()
p.dump_list(buf)
print "VLANs are:"
buf = p.vlan_get_list()
p.dump_list(buf)
buf = p.vlan_get_name(2)
print "VLAN 2 is named \"%s\"" % buf
print "Create VLAN 3"
p.vlan_create(3)
buf = p.vlan_get_name(3)
print "VLAN 3 is named \"%s\"" % buf
print "Set name of VLAN 3 to test333"
p.vlan_set_name(3, "test333")
buf = p.vlan_get_name(3)
print "VLAN 3 is named \"%s\"" % buf
print "VLANs are:"
buf = p.vlan_get_list()
p.dump_list(buf)
print "Destroy VLAN 3"
p.vlan_destroy(3)
print "VLANs are:"
buf = p.vlan_get_list()
p.dump_list(buf)
buf = p.port_get_mode("Gi1/0/10")
print "Port Gi1/0/10 is in %s mode" % buf
buf = p.port_get_mode("Gi1/0/11")
print "Port Gi1/0/11 is in %s mode" % buf
# Test access stuff
buf = p.port_get_mode("Gi1/0/9")
print "Port Gi1/0/9 is in %s mode" % buf
print "Set Gi1/0/9 to access mode"
p.port_set_mode("Gi1/0/9", "access")
print "Move Gi1/0/9 to VLAN 4"
p.port_set_access_vlan("Gi1/0/9", 4)
buf = p.port_get_access_vlan("Gi1/0/9")
print "Read from switch: Gi1/0/9 is on VLAN %s" % buf
print "Move Gi1/0/9 back to VLAN 1"
p.port_set_access_vlan("Gi1/0/9", 1)
# Test access stuff
print "Set Gi1/0/9 to trunk mode"
p.port_set_mode("Gi1/0/9", "trunk")
print "Read from switch: which VLANs is Gi1/0/9 on?"
buf = p.port_get_trunk_vlan_list("Gi1/0/9")
p.dump_list(buf)
print "Add Gi1/0/9 to VLAN 2"
p.port_add_trunk_to_vlan("Gi1/0/9", 2)
print "Add Gi1/0/9 to VLAN 3"
p.port_add_trunk_to_vlan("Gi1/0/9", 3)
print "Add Gi1/0/9 to VLAN 4"
p.port_add_trunk_to_vlan("Gi1/0/9", 4)
print "Read from switch: which VLANs is Gi1/0/9 on?"
buf = p.port_get_trunk_vlan_list("Gi1/0/9")
p.dump_list(buf)
p.port_remove_trunk_from_vlan("Gi1/0/9", 3)
p.port_remove_trunk_from_vlan("Gi1/0/9", 3)
p.port_remove_trunk_from_vlan("Gi1/0/9", 4)
print "Read from switch: which VLANs is Gi1/0/9 on?"
buf = p.port_get_trunk_vlan_list("Gi1/0/9")
p.dump_list(buf)
p.switch_save_running_config()
p.switch_disconnect()
# p._show_config()
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