438 lines
19 KiB
Python
438 lines
19 KiB
Python
#!/usr/bin/env python
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# Copyright 2013 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import netaddr
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import re
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import socket
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import urwid
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from fuelmenu.common import errors as f_errors
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from fuelmenu.common import modulehelper
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from fuelmenu.common import network
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from fuelmenu.common import puppet
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from fuelmenu.common import replace
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import fuelmenu.common.urwidwrapper as widget
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blank = urwid.Divider()
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# Need to define fields in order so it will render correctly
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class Interfaces(urwid.WidgetWrap):
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def __init__(self, parent):
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self.name = "Network Setup"
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self.visible = True
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self.netsettings = dict()
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self.parent = parent
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self.screen = None
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self.log = logging
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self.log.basicConfig(filename='./fuelmenu.log', level=logging.DEBUG)
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self.getNetwork()
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self.gateway = self.get_default_gateway_linux()
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self.activeiface = sorted(self.netsettings.keys())[0]
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self.extdhcp = True
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# UI text
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self.net_choices = widget.ChoicesGroup(sorted(self.netsettings.keys()),
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default_value=self.activeiface,
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fn=self.radioSelectIface)
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# Placeholders for network settings text
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self.net_text1 = widget.TextLabel("")
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self.net_text2 = widget.TextLabel("")
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self.net_text3 = widget.TextLabel("")
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self.header_content = [self.net_choices, self.net_text1,
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self.net_text2, self.net_text3]
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self.fields = ["blank", "ifname", "onboot", "bootproto", "ipaddr",
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"netmask", "gateway"]
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self.defaults = \
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{
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"ifname": {"label": "Interface name:",
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"tooltip": "Interface system identifier",
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"value": "locked"},
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"onboot": {"label": "Enable interface:",
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"tooltip": "",
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"type": modulehelper.WidgetType.RADIO,
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"callback": self.radioSelect},
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"bootproto": {"label": "Configuration via DHCP:",
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"tooltip": "",
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"type": modulehelper.WidgetType.RADIO,
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"choices": ["Static", "DHCP"],
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"callback": self.radioSelect},
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"ipaddr": {"label": "IP address:",
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"tooltip": "Manual IP address (example \
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192.168.1.2)",
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"value": ""},
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"netmask": {"label": "Netmask:",
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"tooltip": "Manual netmask (example \
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255.255.255.0)",
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"value": "255.255.255.0"},
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"gateway": {"label": "Default Gateway:",
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"tooltip": "Manual gateway to access Internet \
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(example 192.168.1.1)",
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"value": ""},
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}
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def fixEtcHosts(self):
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# replace ip for env variable HOSTNAME in /etc/hosts
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if self.netsettings[self.parent.managediface]["addr"] != "":
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managediface_ip = self.netsettings[self.parent.managediface][
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"addr"]
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else:
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managediface_ip = "127.0.0.1"
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found = False
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with open("/etc/hosts") as fh:
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for line in fh:
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if re.match("%s.*%s" % (managediface_ip, socket.gethostname()),
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line):
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found = True
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break
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if not found:
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expr = ".*%s.*" % socket.gethostname()
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replace.replaceInFile("/etc/hosts", expr, "%s %s %s" % (
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managediface_ip, socket.gethostname(),
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socket.gethostname().split(".")[0]))
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def check(self, args):
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"""Validate that all fields have valid values and sanity checks."""
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# Get field information
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responses = dict()
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self.parent.footer.set_text("Checking data...")
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for index, fieldname in enumerate(self.fields):
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if fieldname == "blank" or fieldname == "ifname":
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pass
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elif fieldname == "bootproto":
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rb_group = self.edits[index].rb_group
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if rb_group[0].state:
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responses["bootproto"] = "none"
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else:
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responses["bootproto"] = "dhcp"
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elif fieldname == "onboot":
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rb_group = self.edits[index].rb_group
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if rb_group[0].state:
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responses["onboot"] = "yes"
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else:
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responses["onboot"] = "no"
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else:
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responses[fieldname] = self.edits[index].get_edit_text()
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# Validate each field
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errors = []
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# Check for the duplicate IP provided
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for k, v in self.netsettings.items():
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if (k != self.activeiface and responses["ipaddr"] != ''
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and responses["ipaddr"] == v.get('addr')):
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errors.append("The same IP address {0} is assigned for "
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"interfaces '{1}' and '{2}'.".format(
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responses["ipaddr"], k, self.activeiface))
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break
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if responses["onboot"] == "no":
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numactiveifaces = 0
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for iface in self.netsettings:
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if self.netsettings[iface]['addr'] != "":
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numactiveifaces += 1
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if numactiveifaces < 2 and \
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self.netsettings[self.activeiface]['addr'] != "":
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# Block user because puppet l23network fails if all interfaces
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# are disabled.
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errors.append("Cannot disable all interfaces.")
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elif responses["bootproto"] == "dhcp":
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self.parent.footer.set_text("Scanning for DHCP servers. "
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"Please wait...")
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self.parent.refreshScreen()
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try:
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dhcptimeout = 5
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dhcp_server_data = network.search_external_dhcp(
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self.activeiface, dhcptimeout)
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except network.NetworkException:
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self.log.warning("dhcp_checker failed to check on %s"
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% self.activeiface)
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dhcp_server_data = []
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if len(dhcp_server_data) < 1:
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errors.append("No DHCP servers found. Cannot enable DHCP")
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# Check ipaddr, netmask, gateway only if static
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elif responses["bootproto"] == "none":
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try:
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if netaddr.valid_ipv4(responses["ipaddr"]):
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if not netaddr.IPAddress(responses["ipaddr"]):
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raise f_errors.BadIPException("Not a valid IP address")
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else:
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raise f_errors.BadIPException("Not a valid IP address")
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except (f_errors.BadIPException, Exception):
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errors.append("Not a valid IP address: %s" %
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responses["ipaddr"])
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try:
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if netaddr.valid_ipv4(responses["netmask"]):
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netmask = netaddr.IPAddress(responses["netmask"])
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if netmask.is_netmask is False:
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raise f_errors.BadIPException("Not a valid IP address")
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else:
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raise f_errors.BadIPException("Not a valid IP address")
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except (f_errors.BadIPException, Exception):
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errors.append("Not a valid netmask: %s" % responses["netmask"])
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try:
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if len(responses["gateway"]) > 0:
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# Check if gateway is valid
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if netaddr.valid_ipv4(responses["gateway"]) is False:
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raise f_errors.BadIPException(
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"Gateway IP address is not valid")
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# Check if gateway is in same subnet
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if network.inSameSubnet(responses["ipaddr"],
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responses["gateway"],
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responses["netmask"]) is False:
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raise f_errors.BadIPException(
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"Gateway IP is not in same "
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"subnet as IP address")
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except (f_errors.BadIPException, Exception) as e:
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errors.append(e)
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self.parent.footer.set_text("Scanning for duplicate IP address..")
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if len(responses["ipaddr"]) > 0:
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if self.netsettings[self.activeiface]['link'].upper() != "UP":
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try:
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network.upIface(self.activeiface)
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except f_errors.NetworkException as e:
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errors.append("Cannot activate {0} to check for "
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"duplicate IP.".format(self.activeiface))
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# Bind arping to requested IP if it's already assigned
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assigned_ips = [v.get('addr') for v in
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self.netsettings.itervalues()]
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arping_bind = responses["ipaddr"] in assigned_ips
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if network.duplicateIPExists(responses["ipaddr"],
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self.activeiface, arping_bind):
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errors.append("Duplicate host found with IP {0}.".format(
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responses["ipaddr"]))
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if len(errors) > 0:
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self.log.error("Errors: %s %s" % (len(errors), errors))
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modulehelper.ModuleHelper.display_failed_check_dialog(self, errors)
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return False
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else:
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self.parent.footer.set_text("No errors found.")
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return responses
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def clear_gateways_except(self, iface):
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def include_interface(name):
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return name != iface and \
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self.netsettings[name].get('addr') and \
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self.netsettings[name].get('netmask')
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return [{'type': "resource",
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'class': "l23network::l3::ifconfig",
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'name': name,
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'params': {'ipaddr': network.addr_in_cidr_notation(
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self.netsettings[name]['addr'],
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self.netsettings[name]['netmask'])}}
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for name in self.netsettings if include_interface(name)]
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def apply(self, args):
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responses = self.check(args)
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if responses is False:
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self.log.error("Check failed. Not applying")
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self.parent.footer.set_text("Check failed. Not applying.")
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self.log.error("%s" % (responses))
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return False
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self.parent.footer.set_text("Applying changes... (May take up to 20s)")
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# Build puppet resources to apply l23network puppet module to enable
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# network changes
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puppetclasses = []
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# FIXME(mattymo): install_bondtool param does not work (LP#1541028)
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# The following 4 lines should be removed when fixed.
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disable_bond = {
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'type': "literal",
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'name': 'K_mod <| title == "bonding" |> {ensure => absent} '}
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puppetclasses.append(disable_bond)
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# If there is a gateway configured in /etc/sysconfig/network, unset it
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expr = '^GATEWAY=.*'
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replace.replaceInFile("/etc/sysconfig/network", expr, "")
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# Initialize l23network class for NetworkManager fixes
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l23network = {'type': "resource",
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'class': "class",
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'name': "l23network",
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'params': {'install_bondtool': False}}
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puppetclasses.append(l23network)
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# Prepare l23network interface configuration
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l3ifconfig = {'type': "resource",
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'class': "l23network::l3::ifconfig",
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'name': self.activeiface}
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additionalclasses = []
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if responses["onboot"].lower() == "no":
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params = {"ipaddr": "none",
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"gateway": ""}
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elif responses["bootproto"] == "dhcp":
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additionalclasses = self.clear_gateways_except(self.activeiface)
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params = {"ipaddr": "dhcp"}
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else:
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cidr = network.addr_in_cidr_notation(responses["ipaddr"],
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responses["netmask"])
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params = {"ipaddr": cidr,
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"check_by_ping": "none"}
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if len(responses["gateway"]) > 1:
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params["gateway"] = responses["gateway"]
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additionalclasses = self.clear_gateways_except(
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self.activeiface)
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puppetclasses.extend(additionalclasses)
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l3ifconfig['params'] = params
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puppetclasses.append(l3ifconfig)
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self.log.info("Puppet data: %s" % (puppetclasses))
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try:
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self.parent.refreshScreen()
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result = puppet.puppetApply(puppetclasses)
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if not result:
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raise Exception("Puppet apply failed")
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modulehelper.ModuleHelper.getNetwork(self)
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gateway = self.get_default_gateway_linux()
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if gateway is None:
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gateway = ""
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self.fixEtcHosts()
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if responses['bootproto'] == 'dhcp':
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self.parent.dns_might_have_changed = True
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except Exception as e:
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self.log.error(e)
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self.parent.footer.set_text("Error applying changes. Check logs "
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"for details.")
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modulehelper.ModuleHelper.getNetwork(self)
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self.setNetworkDetails()
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return False
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self.parent.footer.set_text("Changes successfully applied.")
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modulehelper.ModuleHelper.getNetwork(self)
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self.setNetworkDetails()
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return True
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def getNetwork(self):
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modulehelper.ModuleHelper.getNetwork(self)
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def getDHCP(self, iface):
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return modulehelper.ModuleHelper.getDHCP(iface)
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def get_default_gateway_linux(self):
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return modulehelper.ModuleHelper.get_default_gateway_linux()
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def radioSelectIface(self, current, state, user_data=None):
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"""Update network details and display information."""
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# This makes no sense, but urwid returns the previous object.
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# The previous object has True state, which is wrong.
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# Somewhere in current.group a RadioButton is set to True.
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# Our quest is to find it.
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for rb in current.group:
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if rb.get_label() == current.get_label():
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continue
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if rb.base_widget.state is True:
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self.activeiface = rb.base_widget.get_label()
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break
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modulehelper.ModuleHelper.getNetwork(self)
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self.setNetworkDetails()
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def radioSelect(self, current, state, user_data=None):
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"""Update network details and display information."""
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# This makes no sense, but urwid returns the previous object.
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# The previous object has True state, which is wrong.
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# Somewhere in current.group a RadioButton is set to True.
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# Our quest is to find it.
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for rb in current.group:
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if rb.get_label() == current.get_label():
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continue
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if rb.base_widget.state is True:
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self.extdhcp = (rb.base_widget.get_label() == "Yes")
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break
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def setNetworkDetails(self):
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self.net_text1.set_text("Interface: %-13s Link: %s" % (
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self.activeiface,
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self.netsettings[self.activeiface]['link'].upper()))
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self.net_text2.set_text("IP: %-15s MAC: %s" % (
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self.netsettings[self.activeiface]['addr'],
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self.netsettings[self.activeiface]['mac']))
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self.net_text3.set_text("Netmask: %-15s Gateway: %s" % (
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self.netsettings[self.activeiface]['netmask'],
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self.gateway))
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# Set text fields to current netsettings
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for index, fieldname in enumerate(self.fields):
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if fieldname == "ifname":
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self.edits[index].base_widget.set_edit_text(self.activeiface)
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elif fieldname == "bootproto":
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rb_group = self.edits[index].rb_group
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for rb in rb_group:
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if self.netsettings[self.activeiface]["bootproto"].lower()\
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== "dhcp":
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rb_group[1].set_state(True)
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rb_group[0].set_state(False)
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else:
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rb_group[1].set_state(False)
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rb_group[0].set_state(True)
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elif fieldname == "onboot":
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rb_group = self.edits[index].rb_group
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for rb in rb_group:
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if self.netsettings[self.activeiface]["onboot"].lower()\
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== "yes":
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rb_group[0].set_state(True)
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rb_group[1].set_state(False)
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else:
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# onboot should only be no if the interface is also down
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if self.netsettings[self.activeiface]['addr'] == "":
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rb_group[0].set_state(False)
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rb_group[1].set_state(True)
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else:
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rb_group[0].set_state(True)
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rb_group[1].set_state(False)
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elif fieldname == "ipaddr":
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self.edits[index].set_edit_text(self.netsettings[
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self.activeiface]['addr'])
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elif fieldname == "netmask":
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self.edits[index].set_edit_text(self.netsettings[
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self.activeiface]['netmask'])
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elif fieldname == "gateway":
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# Gateway is for this iface only if gateway is matches subnet
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if network.inSameSubnet(
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self.netsettings[self.activeiface]['addr'],
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self.gateway,
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self.netsettings[self.activeiface]['netmask']):
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self.edits[index].set_edit_text(self.gateway)
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else:
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self.edits[index].set_edit_text("")
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def refresh(self):
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modulehelper.ModuleHelper.getNetwork(self)
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self.setNetworkDetails()
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def cancel(self, button):
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modulehelper.ModuleHelper.cancel(self, button)
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self.setNetworkDetails()
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def screenUI(self):
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return modulehelper.ModuleHelper.screenUI(self, self.header_content,
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self.fields,
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self.defaults,
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show_all_buttons=True)
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