#
# network.py - network configuration install data
#
# Matt Wilson <ewt@redhat.com>
# Erik Troan <ewt@redhat.com>
# Mike Fulbright <msf@redhat.com>
# Brent Fox <bfox@redhat.com>
#
# Copyright 2001-2003 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import string
import isys
import iutil
import socket
import os
import kudzu
import rhpl
from flags import flags
from rhpl.translate import _, N_
from rhpl.simpleconfig import SimpleConfigFile
import logging
log = logging.getLogger("anaconda")
class IPError(Exception):
pass
class IPMissing(Exception):
pass
def inStrRange(v, s):
if string.find(s, v) == -1:
return 0
else:
return 1
def sanityCheckHostname(hostname):
if len(hostname) < 1:
return None
if len(hostname) > 64:
return _("Hostname must be 64 or less characters in length.")
if not inStrRange(hostname[0], string.ascii_letters):
return _("Hostname must start with a valid character in the range "
"'a-z' or 'A-Z'")
for i in range(1, len(hostname)):
if not inStrRange(hostname[i], string.ascii_letters+string.digits+".-"):
return _("Hostnames can only contain the characters 'a-z', 'A-Z', '-', or '.'")
return None
def networkDeviceCheck(anaconda):
devs = anaconda.id.network.available()
if not devs:
anaconda.dispatch.skipStep("network")
# return if the device is of a type that requires a ptpaddr to be specified
def isPtpDev(devname):
if (devname.startswith("ctc") or devname.startswith("iucv")):
return 1
return 0
# determine whether any active at boot devices are using dhcp
def anyUsingDHCP(devices):
for dev in devices.keys():
bootproto = devices[dev].get("bootproto")
if bootproto and bootproto.lower() == "dhcp":
onboot = devices[dev].get("onboot")
if onboot and onboot != "no":
return 1
return 0
# sanity check an IP string.
def sanityCheckIPString(ip_string):
if ip_string.strip() == "":
raise IPMissing, _("IP address is missing.")
if ip_string.find(':') == -1 and ip_string.find('.') > 0:
family = socket.AF_INET
errstr = _("IPv4 addresses must contain four numbers between 0 and 255, separated by periods.")
elif ip_string.find(':') > 0 and ip_string.find('.') == -1:
family = socket.AF_INET6
errstr = _("'%s' is not a valid IPv6 address.") % ip_string
else:
raise IPError, _("'%s' is an invalid IP address.") % ip_string
try:
socket.inet_pton(family, ip_string)
except socket.error:
raise IPError, errstr
def hasActiveNetDev():
# try to load /tmp/netinfo and see if we can sniff out network info
netinfo = Network()
for dev in netinfo.netdevices.keys():
try:
ip = isys.getIPAddress(dev)
except Exception, e:
log.error("Got an exception trying to get the ip addr of %s: "
"%s" %(dev, e))
continue
if ip == '127.0.0.1' or ip is None:
continue
if isys.getLinkStatus(dev):
return True
return False
class NetworkDevice(SimpleConfigFile):
def __str__(self):
s = ""
s = s + "DEVICE=" + self.info["DEVICE"] + "\n"
keys = self.info.keys()
keys.sort()
keys.remove("DEVICE")
if "DESC" in keys:
keys.remove("DESC")
if "KEY" in keys:
keys.remove("KEY")
# Don't let onboot be turned on unless we have config information
# to go along with it
if self.get('bootproto').lower() != 'dhcp' and not self.get('ipaddr'):
forceOffOnBoot = 1
else:
forceOffOnBoot = 0
onBootWritten = 0
for key in keys:
if key in ("USEIPV4", "USEIPV6"): # XXX: these are per-device, but not written out
continue
if key == 'ONBOOT' and forceOffOnBoot:
s = s + key + "=" + 'no' + "\n"
# make sure we include autoneg in the ethtool line
elif key == 'ETHTOOL_OPTS' and self.info[key].find("autoneg")== -1:
s = s + key + """="autoneg off %s"\n""" % (self.info[key])
elif self.info[key] is not None:
s = s + key + "=" + self.info[key] + "\n"
if key == 'ONBOOT':
onBootWritten = 1
if not onBootWritten:
s = s + 'ONBOOT=no\n'
return s
def __init__(self, dev):
self.info = { "DEVICE" : dev,
"ONBOOT": "no" }
if dev.startswith('ctc'):
self.info["TYPE"] = "CTC"
elif dev.startswith('iucv'):
self.info["TYPE"] = "IUCV"
class Network:
def __init__(self):
self.firstnetdevice = None
self.netdevices = {}
self.gateway = ""
self.primaryNS = ""
self.secondaryNS = ""
self.domains = []
self.isConfigured = 0
self.hostname = "localhost.localdomain"
# if we specify a hostname and are using dhcp, do an override
# originally used by the gui but overloaded now
# we also test in places if the hostname is localhost.localdomain
# to see if its been override. Need some consolidation in future.
self.overrideDHCPhostname = 0
if flags.rootpath:
self.isConfigured = 1
try:
f = open("/tmp/netinfo", "r")
except:
pass
else:
lines = f.readlines()
f.close()
info = {}
self.isConfigured = 1
for line in lines:
netinf = string.splitfields(line, '=')
if len(netinf) >= 2:
info [netinf[0]] = string.strip(netinf[1])
self.netdevices [info["DEVICE"]] = NetworkDevice(info["DEVICE"])
self.firstnetdevice = info["DEVICE"]
for key in ("IPADDR", "NETMASK", "BOOTPROTO", "ONBOOT", "MTU",
"NETTYPE", "SUBCHANNELS", "PORTNAME", "CTCPROT",
"PEERID", "ESSID", "KEY", "IPV6ADDR", "IPV6_AUTOCONF"):
if info.has_key(key):
self.netdevices [info["DEVICE"]].set((key, info[key]))
self.netdevices [info["DEVICE"]].set(('useIPv4', flags.useIPv4))
self.netdevices [info["DEVICE"]].set(('useIPv6', flags.useIPv6))
if info.has_key("GATEWAY"):
self.gateway = info["GATEWAY"]
if info.has_key("DOMAIN"):
self.domains.append(info["DOMAIN"])
if info.has_key("HOSTNAME"):
self.hostname = info["HOSTNAME"]
if not info.has_key("BOOTPROTO"):
if not info.has_key("IPADDR"):
self.netdevices [info["DEVICE"]].set(('useIPv4', False))
if not (info.has_key("IPV6ADDR") and info.has_key("IPV6_AUTOCONF")):
self.netdevices [info["DEVICE"]].set(('useIPv6', False))
try:
f = open("/etc/resolv.conf", "r")
except:
pass
else:
lines = f.readlines()
f.close()
for line in lines:
resolv = string.split(line)
if resolv and resolv[0] == 'nameserver':
if self.primaryNS == "":
self.primaryNS = resolv[1]
elif self.secondaryNS == "":
self.secondaryNS = resolv[1]
# now initialize remaining devices
# XXX we just throw return away, the method initialize a
# object member so we dont need to
available_devices = self.available()
if len(available_devices) > 0:
# set first device to start up onboot
oneactive = 0
for dev in available_devices.keys():
try:
if available_devices[dev].get("onboot") == "yes":
oneactive = 1
break
except:
continue
if not oneactive:
self.netdevices[self.firstnetdevice].set(("onboot", "yes"))
# assign description to each device based on kudzu information
probedevs = kudzu.probe(kudzu.CLASS_NETWORK, kudzu.BUS_UNSPEC, kudzu.PROBE_LOADED)
for netdev in probedevs:
device = netdev.device
if device in self.netdevices.keys():
desc = netdev.desc
if desc is not None and len(desc) > 0:
self.netdevices[device].set(("desc", desc))
# hwaddr for qeth doesn't make sense (#135023)
if netdev.driver == "qeth":
continue
# add hwaddr
hwaddr = isys.getMacAddress(device)
if hwaddr and hwaddr != "00:00:00:00:00:00" and hwaddr != "ff:ff:ff:ff:ff:ff":
self.netdevices[device].set(("hwaddr", hwaddr))
def getDevice(self, device):
return self.netdevices[device]
def getFirstDeviceName(self):
return self.firstnetdevice
def available(self):
ksdevice = None
if flags.cmdline.has_key("ksdevice"):
ksdevice = flags.cmdline["ksdevice"]
f = open("/proc/net/dev")
lines = f.readlines()
f.close()
# skip first two lines, they are header
lines = lines[2:]
for line in lines:
dev = string.strip(line[0:6])
if dev != "lo" and dev[0:3] != "sit" and not self.netdevices.has_key(dev):
if self.firstnetdevice is None:
self.firstnetdevice = dev
self.netdevices[dev] = NetworkDevice(dev)
try:
hwaddr = isys.getMacAddress(dev)
if rhpl.getArch() != "s390" and hwaddr and hwaddr != "00:00:00:00:00:00" and hwaddr != "ff:ff:ff:ff:ff:ff":
self.netdevices[dev].set(("hwaddr", hwaddr))
except Exception, e:
log.error("exception getting mac addr: %s" %(e,))
if ksdevice and self.netdevices.has_key(ksdevice):
self.firstnetdevice = ksdevice
return self.netdevices
def setHostname(self, hn):
self.hostname = hn
def setDNS(self, ns):
dns = ns.split(',')
if len(dns) >= 1:
self.primaryNS = dns[0]
if len(dns) >= 2:
self.secondaryNS = dns[1]
def setGateway(self, gw):
self.gateway = gw
def lookupHostname(self):
# can't look things up if they don't exist!
if not self.hostname or self.hostname == "localhost.localdomain":
return None
if not self.primaryNS:
return
myns = self.primaryNS
if not self.isConfigured:
for dev in self.netdevices.values():
if (dev.get('bootproto').lower() == "dhcp" and
dev.get('onboot') == "yes"):
ret = isys.dhcpNetDevice(dev)
if ret is None:
continue
myns = ret
self.isConfigured = 1
break
elif (dev.get('ipaddr') and dev.get('netmask') and
self.gateway is not None and dev.get('onboot') == "yes"):
try:
isys.configNetDevice(dev, self.gateway)
self.isConfigured = 1
break
except SystemError:
log.error("failed to configure network device %s when "
"looking up host name", dev.get('device'))
if self.isConfigured and not flags.rootpath:
f = open("/etc/resolv.conf", "w")
f.write("nameserver %s\n" % myns)
f.close()
isys.resetResolv()
isys.setResolvRetry(1)
if not self.isConfigured:
log.warning("no network devices were available to look up host name")
return None
try:
(family, socktype, proto, canonname, sockaddr) = \
socket.getaddrinfo(self.hostname, None, socket.AF_INET)[0]
(ip, port) = sockaddr
except:
try:
(family, socktype, proto, canonname, sockaddr) = \
socket.getaddrinfo(self.hostname, None, socket.AF_INET6)[0]
(ip, port, flowinfo, scopeid) = sockaddr
except:
return None
return ip
def nameservers(self):
return (self.primaryNS, self.secondaryNS)
def dnsString(self):
str = ""
for ns in self.nameservers():
if not ns:
continue
if str: str = str + ","
str = str + ns
return str
def writeKS(self, f):
devNames = self.netdevices.keys()
devNames.sort()
if len(devNames) == 0:
return
for devName in devNames:
dev = self.netdevices[devName]
if dev.get('bootproto').lower() == 'dhcp' or dev.get('ipaddr'):
f.write("network --device %s" % dev.get('device'))
if dev.get('MTU') and dev.get('MTU') != 0:
f.write(" --mtu=%s" % dev.get('MTU'))
onboot = dev.get("onboot")
if onboot and onboot == "no":
f.write(" --onboot no")
if dev.get('bootproto').lower() == 'dhcp':
f.write(" --bootproto dhcp")
if dev.get('dhcpclass'):
f.write(" --class %s" % dev.get('dhcpclass'))
if self.overrideDHCPhostname:
if (self.hostname and
self.hostname != "localhost.localdomain"):
f.write(" --hostname %s" % self.hostname)
else:
f.write(" --bootproto static --ip %s --netmask %s" %
(dev.get('ipaddr'), dev.get('netmask')))
if self.gateway is not None:
f.write(" --gateway %s" % (self.gateway,))
if self.dnsString():
f.write(" --nameserver %s" % (self.dnsString(),))
if (self.hostname and
self.hostname != "localhost.localdomain"):
f.write(" --hostname %s" % self.hostname)
f.write("\n");
def write(self, instPath):
# make sure the directory exists
if not os.path.isdir("%s/etc/sysconfig/network-scripts" %(instPath,)):
iutil.mkdirChain("%s/etc/sysconfig/network-scripts" %(instPath,))
# /etc/sysconfig/network-scripts/ifcfg-*
for dev in self.netdevices.values():
device = dev.get("device")
fn = "%s/etc/sysconfig/network-scripts/ifcfg-%s" % (instPath,
device)
f = open(fn, "w")
os.chmod(fn, 0644)
if len(dev.get("DESC")) > 0:
f.write("# %s\n" % (dev.get("DESC"),))
f.write(str(dev))
# write out the hostname as DHCP_HOSTNAME if given (#81613)
if (dev.get('bootproto').lower() == 'dhcp' and self.hostname and
self.overrideDHCPhostname):
f.write("DHCP_HOSTNAME=%s\n" %(self.hostname,))
if dev.get('dhcpclass'):
f.write("DHCP_CLASSID=%s\n" % dev.get('dhcpclass'))
if dev.get('MTU') and dev.get('MTU') != 0:
f.write("MTU=%s\n" % dev.get('MTU'))
f.close()
if dev.get("key"):
fn = "%s/etc/sysconfig/network-scripts/keys-%s" % (instPath,
device)
f = open(fn, "w")
os.chmod(fn, 0600)
f.write("KEY=%s\n" % dev.get('key'))
f.close()
# /etc/sysconfig/network
f = open(instPath + "/etc/sysconfig/network", "w")
f.write("NETWORKING=yes\n")
f.write("HOSTNAME=")
# use instclass hostname if set(kickstart) to override
if self.hostname:
f.write(self.hostname + "\n")
else:
f.write("localhost.localdomain\n")
if self.gateway:
f.write("GATEWAY=%s\n" % (self.gateway,))
f.close()
# /etc/hosts
f = open(instPath + "/etc/hosts", "w")
localline = ""
log.info("self.hostname = %s", self.hostname)
ip = self.lookupHostname()
# If the hostname is not resolvable, tie it to 127.0.0.1
if not ip and self.hostname != "localhost.localdomain":
localline += self.hostname + " "
l = string.split(self.hostname, ".")
if len(l) > 1:
localline += l[0] + " "
localline += "localhost.localdomain localhost\n"
f.write("# Do not remove the following line, or various programs\n")
f.write("# that require network functionality will fail.\n")
f.write("127.0.0.1\t\t" + localline)
f.write("::1\t\tlocalhost6.localdomain6 localhost6\n")
if ip:
nameline = "%s\t\t%s" % (ip, self.hostname)
n = string.split(self.hostname, ".")
if len(n) > 1:
nameline = nameline + " " + n[0]
f.write("%s\n" %(nameline,))
# If the hostname was not looked up, but typed in by the user,
# domain might not be computed, so do it now.
if self.domains == ["localdomain"] or not self.domains:
if '.' in self.hostname:
# chop off everything before the leading '.'
domain = self.hostname[(string.find(self.hostname, '.') + 1):]
self.domains = [domain]
# /etc/resolv.conf
f = open(instPath + "/etc/resolv.conf", "w")
if self.domains != ['localdomain'] and self.domains:
f.write("search %s\n" % (string.joinfields(self.domains, ' '),))
for ns in self.nameservers():
if ns:
f.write("nameserver %s\n" % (ns,))
f.close()