676 lines
20 KiB
Python
676 lines
20 KiB
Python
#
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# CORE
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# Copyright (c)2010-2012 the Boeing Company.
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# See the LICENSE file included in this distribution.
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#
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# author: Jeff Ahrenholz <jeffrey.m.ahrenholz@boeing.com>
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#
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'''
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utility.py: defines miscellaneous utility services.
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'''
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import os
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from core.service import CoreService, addservice
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from core.misc.ipaddr import IPv4Prefix, IPv6Prefix
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from core.misc.utils import *
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from core.constants import *
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class UtilService(CoreService):
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''' Parent class for utility services.
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'''
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_name = "UtilityProcess"
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_group = "Utility"
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_depends = ()
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_dirs = ()
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_configs = ()
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_startindex = 80
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_startup = ()
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_shutdown = ()
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@classmethod
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def generateconfig(cls, node, filename, services):
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return ""
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class IPForwardService(UtilService):
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_name = "IPForward"
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_configs = ("ipforward.sh", )
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_startindex = 5
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_startup = ("sh ipforward.sh", )
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@classmethod
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def generateconfig(cls, node, filename, services):
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if os.uname()[0] == "Linux":
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return cls.generateconfiglinux(node, filename, services)
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elif os.uname()[0] == "FreeBSD":
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return cls.generateconfigbsd(node, filename, services)
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else:
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raise Exception, "unknown platform"
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@classmethod
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def generateconfiglinux(cls, node, filename, services):
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cfg = """\
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#!/bin/sh
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# auto-generated by IPForward service (utility.py)
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%s -w net.ipv4.conf.all.forwarding=1
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%s -w net.ipv6.conf.all.forwarding=1
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%s -w net.ipv4.conf.all.send_redirects=0
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%s -w net.ipv4.conf.all.rp_filter=0
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%s -w net.ipv4.conf.default.rp_filter=0
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""" % (SYSCTL_BIN, SYSCTL_BIN, SYSCTL_BIN, SYSCTL_BIN, SYSCTL_BIN)
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for ifc in node.netifs():
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name = sysctldevname(ifc.name)
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cfg += "%s -w net.ipv4.conf.%s.forwarding=1\n" % (SYSCTL_BIN, name)
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cfg += "%s -w net.ipv4.conf.%s.send_redirects=0\n" % \
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(SYSCTL_BIN, name)
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cfg += "%s -w net.ipv4.conf.%s.rp_filter=0\n" % (SYSCTL_BIN, name)
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return cfg
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@classmethod
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def generateconfigbsd(cls, node, filename, services):
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return """\
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#!/bin/sh
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# auto-generated by IPForward service (utility.py)
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%s -w net.inet.ip.forwarding=1
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%s -w net.inet6.ip6.forwarding=1
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%s -w net.inet.icmp.bmcastecho=1
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%s -w net.inet.icmp.icmplim=0
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""" % (SYSCTL_BIN, SYSCTL_BIN, SYSCTL_BIN, SYSCTL_BIN)
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addservice(IPForwardService)
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class DefaultRouteService(UtilService):
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_name = "DefaultRoute"
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_configs = ("defaultroute.sh",)
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_startup = ("sh defaultroute.sh",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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cfg = "#!/bin/sh\n"
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cfg += "# auto-generated by DefaultRoute service (utility.py)\n"
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for ifc in node.netifs():
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if hasattr(ifc, 'control') and ifc.control == True:
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continue
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cfg += "\n".join(map(cls.addrstr, ifc.addrlist))
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cfg += "\n"
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return cfg
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@staticmethod
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def addrstr(x):
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if x.find(":") >= 0:
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net = IPv6Prefix(x)
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fam = "inet6 ::"
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else:
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net = IPv4Prefix(x)
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fam = "inet 0.0.0.0"
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if net.maxaddr() == net.minaddr():
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return ""
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else:
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if os.uname()[0] == "Linux":
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rtcmd = "ip route add default via"
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elif os.uname()[0] == "FreeBSD":
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rtcmd = "route add -%s" % fam
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else:
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raise Exception, "unknown platform"
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return "%s %s" % (rtcmd, net.minaddr())
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addservice(DefaultRouteService)
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class DefaultMulticastRouteService(UtilService):
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_name = "DefaultMulticastRoute"
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_configs = ("defaultmroute.sh",)
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_startup = ("sh defaultmroute.sh",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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cfg = "#!/bin/sh\n"
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cfg += "# auto-generated by DefaultMulticastRoute service (utility.py)\n"
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cfg += "# the first interface is chosen below; please change it "
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cfg += "as needed\n"
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for ifc in node.netifs():
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if hasattr(ifc, 'control') and ifc.control == True:
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continue
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if os.uname()[0] == "Linux":
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rtcmd = "ip route add 224.0.0.0/4 dev"
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elif os.uname()[0] == "FreeBSD":
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rtcmd = "route add 224.0.0.0/4 -iface"
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else:
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raise Exception, "unknown platform"
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cfg += "%s %s\n" % (rtcmd, ifc.name)
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cfg += "\n"
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break
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return cfg
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addservice(DefaultMulticastRouteService)
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class StaticRouteService(UtilService):
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_name = "StaticRoute"
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_configs = ("staticroute.sh",)
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_startup = ("sh staticroute.sh",)
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_custom_needed = True
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@classmethod
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def generateconfig(cls, node, filename, services):
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cfg = "#!/bin/sh\n"
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cfg += "# auto-generated by StaticRoute service (utility.py)\n#\n"
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cfg += "# NOTE: this service must be customized to be of any use\n"
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cfg += "# Below are samples that you can uncomment and edit.\n#\n"
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for ifc in node.netifs():
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if hasattr(ifc, 'control') and ifc.control == True:
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continue
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cfg += "\n".join(map(cls.routestr, ifc.addrlist))
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cfg += "\n"
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return cfg
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@staticmethod
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def routestr(x):
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if x.find(":") >= 0:
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net = IPv6Prefix(x)
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fam = "inet6"
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dst = "3ffe:4::/64"
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else:
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net = IPv4Prefix(x)
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fam = "inet"
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dst = "10.9.8.0/24"
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if net.maxaddr() == net.minaddr():
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return ""
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else:
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if os.uname()[0] == "Linux":
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rtcmd = "#/sbin/ip route add %s via" % dst
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elif os.uname()[0] == "FreeBSD":
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rtcmd = "#/sbin/route add -%s %s" % (fam, dst)
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else:
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raise Exception, "unknown platform"
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return "%s %s" % (rtcmd, net.minaddr())
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addservice(StaticRouteService)
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class SshService(UtilService):
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_name = "SSH"
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if os.uname()[0] == "FreeBSD":
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_configs = ("startsshd.sh", "sshd_config",)
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_dirs = ()
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else:
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_configs = ("startsshd.sh", "/etc/ssh/sshd_config",)
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_dirs = ("/etc/ssh", "/var/run/sshd",)
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_startup = ("sh startsshd.sh",)
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_shutdown = ("killall sshd",)
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_validate = ()
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@classmethod
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def generateconfig(cls, node, filename, services):
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''' Use a startup script for launching sshd in order to wait for host
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key generation.
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'''
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if os.uname()[0] == "FreeBSD":
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sshcfgdir = node.nodedir
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sshstatedir = node.nodedir
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sshlibdir = "/usr/libexec"
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else:
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sshcfgdir = cls._dirs[0]
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sshstatedir = cls._dirs[1]
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sshlibdir = "/usr/lib/openssh"
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if filename == "startsshd.sh":
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return """\
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#!/bin/sh
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# auto-generated by SSH service (utility.py)
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ssh-keygen -q -t rsa -N "" -f %s/ssh_host_rsa_key
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chmod 655 %s
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# wait until RSA host key has been generated to launch sshd
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/usr/sbin/sshd -f %s/sshd_config
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""" % (sshcfgdir, sshstatedir, sshcfgdir)
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else:
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return """\
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# auto-generated by SSH service (utility.py)
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Port 22
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Protocol 2
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HostKey %s/ssh_host_rsa_key
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UsePrivilegeSeparation yes
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PidFile %s/sshd.pid
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KeyRegenerationInterval 3600
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ServerKeyBits 768
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SyslogFacility AUTH
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LogLevel INFO
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LoginGraceTime 120
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PermitRootLogin yes
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StrictModes yes
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RSAAuthentication yes
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PubkeyAuthentication yes
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IgnoreRhosts yes
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RhostsRSAAuthentication no
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HostbasedAuthentication no
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PermitEmptyPasswords no
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ChallengeResponseAuthentication no
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X11Forwarding yes
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X11DisplayOffset 10
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PrintMotd no
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PrintLastLog yes
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TCPKeepAlive yes
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AcceptEnv LANG LC_*
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Subsystem sftp %s/sftp-server
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UsePAM yes
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UseDNS no
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""" % (sshcfgdir, sshstatedir, sshlibdir)
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addservice(SshService)
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class DhcpService(UtilService):
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_name = "DHCP"
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_configs = ("/etc/dhcp/dhcpd.conf",)
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_dirs = ("/etc/dhcp",)
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_startup = ("dhcpd",)
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_shutdown = ("killall dhcpd",)
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_validate = ("pidof dhcpd",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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''' Generate a dhcpd config file using the network address of
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each interface.
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'''
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cfg = """\
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# auto-generated by DHCP service (utility.py)
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# NOTE: move these option lines into the desired pool { } block(s) below
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#option domain-name "test.com";
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#option domain-name-servers 10.0.0.1;
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#option routers 10.0.0.1;
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log-facility local6;
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default-lease-time 600;
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max-lease-time 7200;
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ddns-update-style none;
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"""
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for ifc in node.netifs():
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if hasattr(ifc, 'control') and ifc.control == True:
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continue
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cfg += "\n".join(map(cls.subnetentry, ifc.addrlist))
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cfg += "\n"
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return cfg
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@staticmethod
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def subnetentry(x):
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''' Generate a subnet declaration block given an IPv4 prefix string
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for inclusion in the dhcpd3 config file.
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'''
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if x.find(":") >= 0:
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return ""
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else:
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addr = x.split("/")[0]
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net = IPv4Prefix(x)
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# divide the address space in half
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rangelow = net.addr(net.numaddr() / 2)
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rangehigh = net.maxaddr()
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return """
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subnet %s netmask %s {
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pool {
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range %s %s;
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default-lease-time 600;
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option routers %s;
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}
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}
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""" % (net.prefixstr(), net.netmaskstr(), rangelow, rangehigh, addr)
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addservice(DhcpService)
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class DhcpClientService(UtilService):
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''' Use a DHCP client for all interfaces for addressing.
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'''
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_name = "DHCPClient"
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_configs = ("startdhcpclient.sh",)
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_startup = ("sh startdhcpclient.sh",)
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_shutdown = ("killall dhclient",)
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_validate = ("pidof dhclient",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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''' Generate a script to invoke dhclient on all interfaces.
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'''
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cfg = "#!/bin/sh\n"
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cfg += "# auto-generated by DHCPClient service (utility.py)\n"
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cfg += "# uncomment this mkdir line and symlink line to enable client-"
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cfg += "side DNS\n# resolution based on the DHCP server response.\n"
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cfg += "#mkdir -p /var/run/resolvconf/interface\n"
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for ifc in node.netifs():
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if hasattr(ifc, 'control') and ifc.control == True:
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continue
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cfg += "#ln -s /var/run/resolvconf/interface/%s.dhclient" % ifc.name
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cfg += " /var/run/resolvconf/resolv.conf\n"
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cfg += "/sbin/dhclient -nw -pf /var/run/dhclient-%s.pid" % ifc.name
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cfg += " -lf /var/run/dhclient-%s.lease %s\n" % (ifc.name, ifc.name)
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return cfg
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addservice(DhcpClientService)
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class FtpService(UtilService):
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''' Start a vsftpd server.
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'''
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_name = "FTP"
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_configs = ("vsftpd.conf",)
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_dirs = ("/var/run/vsftpd/empty", "/var/ftp",)
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_startup = ("vsftpd ./vsftpd.conf",)
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_shutdown = ("killall vsftpd",)
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_validate = ("pidof vsftpd",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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''' Generate a vsftpd.conf configuration file.
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'''
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return """\
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# vsftpd.conf auto-generated by FTP service (utility.py)
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listen=YES
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anonymous_enable=YES
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local_enable=YES
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dirmessage_enable=YES
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use_localtime=YES
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xferlog_enable=YES
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connect_from_port_20=YES
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xferlog_file=/var/log/vsftpd.log
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ftpd_banner=Welcome to the CORE FTP service
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secure_chroot_dir=/var/run/vsftpd/empty
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anon_root=/var/ftp
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"""
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addservice(FtpService)
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class HttpService(UtilService):
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''' Start an apache server.
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'''
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_name = "HTTP"
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_configs = ("/etc/apache2/apache2.conf", "/etc/apache2/envvars",
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"/var/www/index.html",)
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_dirs = ("/etc/apache2", "/var/run/apache2", "/var/log/apache2",
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"/run/lock", "/var/lock/apache2", "/var/www", )
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_startup = ("chown www-data /var/lock/apache2", "apache2ctl start",)
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_shutdown = ("apache2ctl stop",)
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_validate = ("pidof apache2",)
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@classmethod
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def generateconfig(cls, node, filename, services):
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''' Generate an apache2.conf configuration file.
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'''
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if filename == cls._configs[0]:
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return cls.generateapache2conf(node, filename, services)
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elif filename == cls._configs[1]:
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return cls.generateenvvars(node, filename, services)
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elif filename == cls._configs[2]:
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return cls.generatehtml(node, filename, services)
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else:
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return ""
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@classmethod
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def generateapache2conf(cls, node, filename, services):
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return """\
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# apache2.conf generated by utility.py:HttpService
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LockFile ${APACHE_LOCK_DIR}/accept.lock
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PidFile ${APACHE_PID_FILE}
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Timeout 300
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KeepAlive On
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MaxKeepAliveRequests 100
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KeepAliveTimeout 5
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<IfModule mpm_prefork_module>
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StartServers 5
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MinSpareServers 5
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MaxSpareServers 10
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MaxClients 150
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MaxRequestsPerChild 0
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</IfModule>
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<IfModule mpm_worker_module>
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StartServers 2
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MinSpareThreads 25
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MaxSpareThreads 75
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ThreadLimit 64
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ThreadsPerChild 25
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MaxClients 150
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MaxRequestsPerChild 0
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</IfModule>
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<IfModule mpm_event_module>
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StartServers 2
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MinSpareThreads 25
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MaxSpareThreads 75
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ThreadLimit 64
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ThreadsPerChild 25
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MaxClients 150
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MaxRequestsPerChild 0
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</IfModule>
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User ${APACHE_RUN_USER}
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Group ${APACHE_RUN_GROUP}
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AccessFileName .htaccess
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<Files ~ "^\.ht">
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Order allow,deny
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Deny from all
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Satisfy all
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</Files>
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DefaultType None
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HostnameLookups Off
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ErrorLog ${APACHE_LOG_DIR}/error.log
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LogLevel warn
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#Include mods-enabled/*.load
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#Include mods-enabled/*.conf
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LoadModule alias_module /usr/lib/apache2/modules/mod_alias.so
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LoadModule auth_basic_module /usr/lib/apache2/modules/mod_auth_basic.so
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LoadModule authz_default_module /usr/lib/apache2/modules/mod_authz_default.so
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LoadModule authz_host_module /usr/lib/apache2/modules/mod_authz_host.so
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LoadModule authz_user_module /usr/lib/apache2/modules/mod_authz_user.so
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LoadModule autoindex_module /usr/lib/apache2/modules/mod_autoindex.so
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LoadModule dir_module /usr/lib/apache2/modules/mod_dir.so
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LoadModule env_module /usr/lib/apache2/modules/mod_env.so
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NameVirtualHost *:80
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Listen 80
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<IfModule mod_ssl.c>
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Listen 443
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</IfModule>
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<IfModule mod_gnutls.c>
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Listen 443
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</IfModule>
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LogFormat "%v:%p %h %l %u %t \\"%r\\" %>s %O \\"%{Referer}i\\" \\"%{User-Agent}i\\"" vhost_combined
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LogFormat "%h %l %u %t \\"%r\\" %>s %O \\"%{Referer}i\\" \\"%{User-Agent}i\\"" combined
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LogFormat "%h %l %u %t \\"%r\\" %>s %O" common
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LogFormat "%{Referer}i -> %U" referer
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LogFormat "%{User-agent}i" agent
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ServerTokens OS
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ServerSignature On
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TraceEnable Off
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<VirtualHost *:80>
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ServerAdmin webmaster@localhost
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DocumentRoot /var/www
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<Directory />
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Options FollowSymLinks
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AllowOverride None
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</Directory>
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<Directory /var/www/>
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Options Indexes FollowSymLinks MultiViews
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AllowOverride None
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Order allow,deny
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allow from all
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</Directory>
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ErrorLog ${APACHE_LOG_DIR}/error.log
|
|
LogLevel warn
|
|
CustomLog ${APACHE_LOG_DIR}/access.log combined
|
|
</VirtualHost>
|
|
|
|
"""
|
|
|
|
@classmethod
|
|
def generateenvvars(cls, node, filename, services):
|
|
return """\
|
|
# this file is used by apache2ctl - generated by utility.py:HttpService
|
|
# these settings come from a default Ubuntu apache2 installation
|
|
export APACHE_RUN_USER=www-data
|
|
export APACHE_RUN_GROUP=www-data
|
|
export APACHE_PID_FILE=/var/run/apache2.pid
|
|
export APACHE_RUN_DIR=/var/run/apache2
|
|
export APACHE_LOCK_DIR=/var/lock/apache2
|
|
export APACHE_LOG_DIR=/var/log/apache2
|
|
export LANG=C
|
|
export LANG
|
|
"""
|
|
|
|
@classmethod
|
|
def generatehtml(cls, node, filename, services):
|
|
body = """\
|
|
<!-- generated by utility.py:HttpService -->
|
|
<h1>%s web server</h1>
|
|
<p>This is the default web page for this server.</p>
|
|
<p>The web server software is running but no content has been added, yet.</p>
|
|
""" % node.name
|
|
for ifc in node.netifs():
|
|
if hasattr(ifc, 'control') and ifc.control == True:
|
|
continue
|
|
body += "<li>%s - %s</li>\n" % (ifc.name, ifc.addrlist)
|
|
return "<html><body>%s</body></html>" % body
|
|
|
|
addservice(HttpService)
|
|
|
|
class PcapService(UtilService):
|
|
''' Pcap service for logging packets.
|
|
'''
|
|
_name = "pcap"
|
|
_configs = ("pcap.sh", )
|
|
_dirs = ()
|
|
_startindex = 1
|
|
_startup = ("sh pcap.sh start",)
|
|
_shutdown = ("sh pcap.sh stop",)
|
|
_validate = ("pidof tcpdump",)
|
|
_meta = "logs network traffic to pcap packet capture files"
|
|
|
|
@classmethod
|
|
def generateconfig(cls, node, filename, services):
|
|
''' Generate a startpcap.sh traffic logging script.
|
|
'''
|
|
cfg = """
|
|
#!/bin/sh
|
|
# set tcpdump options here (see 'man tcpdump' for help)
|
|
# (-s snap length, -C limit pcap file length, -n disable name resolution)
|
|
DUMPOPTS="-s 12288 -C 10 -n"
|
|
|
|
if [ "x$1" = "xstart" ]; then
|
|
|
|
"""
|
|
for ifc in node.netifs():
|
|
if hasattr(ifc, 'control') and ifc.control == True:
|
|
cfg += '# '
|
|
redir = "< /dev/null"
|
|
cfg += "tcpdump ${DUMPOPTS} -w %s.%s.pcap -i %s %s &\n" % \
|
|
(node.name, ifc.name, ifc.name, redir)
|
|
cfg += """
|
|
|
|
elif [ "x$1" = "xstop" ]; then
|
|
mkdir -p ${SESSION_DIR}/pcap
|
|
mv *.pcap ${SESSION_DIR}/pcap
|
|
fi;
|
|
"""
|
|
return cfg
|
|
|
|
addservice(PcapService)
|
|
|
|
class RadvdService(UtilService):
|
|
_name = "radvd"
|
|
_configs = ("/etc/radvd/radvd.conf",)
|
|
_dirs = ("/etc/radvd",)
|
|
_startup = ("radvd -C /etc/radvd/radvd.conf -m logfile -l /var/log/radvd.log",)
|
|
_shutdown = ("pkill radvd",)
|
|
_validate = ("pidof radvd",)
|
|
|
|
@classmethod
|
|
def generateconfig(cls, node, filename, services):
|
|
''' Generate a RADVD router advertisement daemon config file
|
|
using the network address of each interface.
|
|
'''
|
|
cfg = "# auto-generated by RADVD service (utility.py)\n"
|
|
for ifc in node.netifs():
|
|
if hasattr(ifc, 'control') and ifc.control == True:
|
|
continue
|
|
prefixes = map(cls.subnetentry, ifc.addrlist)
|
|
if len(prefixes) < 1:
|
|
continue
|
|
cfg += """\
|
|
interface %s
|
|
{
|
|
AdvSendAdvert on;
|
|
MinRtrAdvInterval 3;
|
|
MaxRtrAdvInterval 10;
|
|
AdvDefaultPreference low;
|
|
AdvHomeAgentFlag off;
|
|
""" % ifc.name
|
|
for prefix in prefixes:
|
|
if prefix == "":
|
|
continue
|
|
cfg += """\
|
|
prefix %s
|
|
{
|
|
AdvOnLink on;
|
|
AdvAutonomous on;
|
|
AdvRouterAddr on;
|
|
};
|
|
""" % prefix
|
|
cfg += "};\n"
|
|
return cfg
|
|
|
|
@staticmethod
|
|
def subnetentry(x):
|
|
''' Generate a subnet declaration block given an IPv6 prefix string
|
|
for inclusion in the RADVD config file.
|
|
'''
|
|
if x.find(":") >= 0:
|
|
net = IPv6Prefix(x)
|
|
return str(net)
|
|
else:
|
|
return ""
|
|
|
|
addservice(RadvdService)
|
|
|
|
class AtdService(UtilService):
|
|
''' Atd service for scheduling at jobs
|
|
'''
|
|
_name = "atd"
|
|
_configs = ("startatd.sh",)
|
|
_dirs = ("/var/spool/cron/atjobs", "/var/spool/cron/atspool")
|
|
_startup = ("sh startatd.sh", )
|
|
_shutdown = ("pkill atd", )
|
|
|
|
@classmethod
|
|
def generateconfig(cls, node, filename, services):
|
|
return """
|
|
#!/bin/sh
|
|
echo 00001 > /var/spool/cron/atjobs/.SEQ
|
|
chown -R daemon /var/spool/cron/*
|
|
chmod -R 700 /var/spool/cron/*
|
|
atd
|
|
"""
|
|
|
|
addservice(AtdService)
|
|
|
|
class UserDefinedService(UtilService):
|
|
''' Dummy service allowing customization of anything.
|
|
'''
|
|
_name = "UserDefined"
|
|
_startindex = 50
|
|
_meta = "Customize this service to do anything upon startup."
|
|
|
|
addservice(UserDefinedService)
|