Fincer
/
openntpd-openbsd
mirror of https://github.com/Fincer/openntpd-openbsd
1
0
Fork 0
Code Issues 0 Projects 0 Releases 61 Wiki Activity
Source code pulled from OpenBSD for OpenNTPD. The place to contribute to this code is via the OpenBSD CVS tree.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
6299 Commits
49 Branches
284 MiB
 
 
 
 
 
 
Tree: 938c939dfe
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '938c939dfe'
${ noResults }
openntpd-openbsd/src/etc/netstart

321 lines
9.2 KiB
Raw Blame History

#!/bin/sh -
#
# $OpenBSD: netstart,v 1.138 2013/03/20 15:26:28 todd Exp $
# Strip comments (and leading/trailing whitespace if IFS is set)
# from a file and spew to stdout
stripcom() {
local _l
[[ -f $1 ]] || return
while read _l; do
[[ -n ${_l%%#*} ]] && echo $_l
done<$1
}
# Start the $1 interface
ifstart() {
if=$1
# Interface names must be alphanumeric only. We check to avoid
# configuring backup or temp files, and to catch the "*" case.
[[ $if != +([[:alpha:]])+([[:digit:]]) ]] && return
file=/etc/hostname.$if
if ! [ -f $file ]; then
echo "netstart: $file: No such file or directory"
return
fi
# Not using stat(1), we can't rely on having /usr yet
set -A stat -- `ls -nL $file`
if [ "${stat[0]#???????} ${stat[2]} ${stat[3]}" != "--- 0 0" ]; then
echo "WARNING: $file is insecure, fixing permissions"
chmod -LR o-rwx $file
chown -LR root.wheel $file
fi
# Check for ifconfig'able interface.
(ifconfig $if || ifconfig $if create) >/dev/null 2>&1 || return
# Now parse the hostname.* file
while :; do
if [ "$cmd2" ]; then
# We are carrying over from the 'read dt dtaddr'
# last time.
set -- $cmd2
af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" cmd2=
# Make sure and get any remaining args in ext2,
# like the read below
i=1
while [ $i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
ext2="$@"
else
# Read the next line or exit the while loop.
read af name mask bcaddr ext1 ext2 || break
fi
# $af can be "dhcp", "up", "rtsol", an address family,
# commands, or a comment.
case "$af" in
"#"*|"") # skip comments and empty lines
continue
;;
"!"*) # parse commands
cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
;;
"dhcp")
[ "$name" = "NONE" ] && name=
[ "$mask" = "NONE" ] && mask=
[ "$bcaddr" = "NONE" ] && bcaddr=
cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 down"
cmd="$cmd;dhclient $if"
dhcpif="$dhcpif $if"
;;
"rtsol")
rtsolif="$rtsolif $if"
cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
;;
*)
read dt dtaddr
if [ "$name" = "alias" ]; then
# perform a 'shift' of sorts
alias=$name
name=$mask
mask=$bcaddr
bcaddr=$ext1
ext1=$ext2
ext2=
else
alias=
fi
cmd="ifconfig $if $af $alias $name"
case "$dt" in
dest)
cmd="$cmd $dtaddr"
;;
*)
cmd2="$dt $dtaddr"
;;
esac
case $af in
inet)
if [ ! -n "$name" ]; then
echo "/etc/hostname.$if: inet alone is invalid"
return
fi
[ "$mask" ] && cmd="$cmd netmask $mask"
if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
cmd="$cmd broadcast $bcaddr"
fi
[ "$alias" ] && rtcmd=";route -qn add -host $name 127.0.0.1"
;;
inet6)
if [ ! -n "$name" ]; then
echo "/etc/hostname.$if: inet6 alone is invalid"
return
fi
[ "$mask" ] && cmd="$cmd prefixlen $mask"
cmd="$cmd $bcaddr"
;;
*)
cmd="$cmd $mask $bcaddr"
;;
esac
cmd="$cmd $ext1 $ext2$rtcmd" rtcmd=
;;
esac
eval "$cmd"
done < /etc/hostname.$if
}
# Start multiple:
# start "$1" interfaces in order or all interfaces if empty
# don't start "$2" interfaces
ifmstart() {
for sif in ${1:-ALL}; do
for hn in /etc/hostname.*; do
# Strip off /etc/hostname. prefix
if=${hn#/etc/hostname.}
test "$if" = "*" && continue
# Skip unwanted ifs
s=""
for xf in $2; do
test "$xf" = "${if%%[0-9]*}" && s="1" && break
done
test "$s" = "1" && continue
# Start wanted ifs
test "$sif" = "ALL" -o \
"$sif" = "${if%%[0-9]*}" \
&& ifstart $if
done
done
}
# Re-read /etc/rc.conf
. /etc/rc.conf
# If we were invoked with a list of interface names, just reconfigure these
# interfaces (or bridges) and return.
if [[ $1 == autoboot ]]; then
shift
fi
if [ $# -gt 0 ]; then
while [ $# -gt 0 ]; do
ifstart $1
shift
done
return
fi
# Otherwise, process with the complete network initialization.
# /etc/myname contains my symbolic name
if [ -f /etc/myname ]; then
hostname=`stripcom /etc/myname`
hostname $hostname
else
hostname=`hostname`
fi
# Set the address for the loopback interface. Bringing the interface up,
# automatically invokes the IPv6 address ::1.
ifconfig lo0 inet 127.0.0.1/8
if ifconfig lo0 inet6 >/dev/null 2>&1; then
# IPv6 configurations.
ip6kernel=YES
# Disallow link-local unicast dest without outgoing scope identifiers.
route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
# Disallow site-local unicast dest without outgoing scope identifiers.
# If you configure site-locals without scope id (it is permissible
# config for routers that are not on scope boundary), you may want
# to comment the line out.
route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
# Disallow "internal" addresses to appear on the wire.
route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
# Disallow packets to malicious IPv4 compatible prefix.
route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
# Disallow packets to malicious 6to4 prefix.
route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
# Disallow packets without scope identifier.
route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject > /dev/null
route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject > /dev/null
# Completely disallow packets to IPv4 compatible prefix.
# This may conflict with RFC1933 under following circumstances:
# (1) An IPv6-only KAME node tries to originate packets to IPv4
# compatible destination. The KAME node has no IPv4 compatible
# support. Under RFC1933, it should transmit native IPv6
# packets toward IPv4 compatible destination, hoping it would
# reach a router that forwards the packet toward auto-tunnel
# interface.
# (2) An IPv6-only node originates a packet to an IPv4 compatible
# destination. A KAME node is acting as an IPv6 router, and
# asked to forward it.
# Due to rare use of IPv4 compatible addresses, and security issues
# with it, we disable it by default.
route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
rtsolif=""
else
ip6kernel=NO
fi
# Configure all the non-loopback interfaces which we know about, but
# do not start interfaces which must be delayed. Refer to hostname.if(5)
ifmstart "" "trunk svlan vlan carp gif gre pfsync pppoe tun bridge"
# The trunk interfaces need to come up first in this list.
# The (s)vlan interfaces need to come up after trunk.
# Configure all the carp interfaces which we know about before default route.
ifmstart "trunk svlan vlan carp"
if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
fw=`sysctl -n net.inet6.ip6.forwarding`
ra=`sysctl -n net.inet6.ip6.accept_rtadv`
if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
echo "IPv6 autoconf:$rtsolif"
rtsol $rtsolif
else
echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
fi
fi
# Look for default routes in /etc/mygate.
[[ -z $dhcpif ]] && stripcom /etc/mygate | while read gw; do
[[ $gw == @(*:*) ]] && continue
route -qn delete default > /dev/null 2>&1
route -qn add -host default $gw && break
done
[[ -z $rtsolif ]] && stripcom /etc/mygate | while read gw; do
[[ $gw == !(*:*) ]] && continue
route -qn delete -inet6 default > /dev/null 2>&1
route -qn add -host -inet6 default $gw && break
done
# Multicast routing.
#
# The routing to the 224.0.0.0/4 net is setup according to these rules:
# multicast_host multicast_router route comment
# NO NO -reject no multicast
# NO YES none installed daemon will run
# YES/interface NO -interface YES=def. iface
# Any other combination -reject config error
route -qn delete 224.0.0.0/4 > /dev/null 2>&1
case "$multicast_host:$multicast_router" in
NO:NO)
route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
;;
NO:YES)
;;
*:NO)
maddr=`if [ "$multicast_host" = "YES" ]; then
ed -s '!route -qn show -inet' <<EOF
/^default/p
EOF
else
ed -s "!ifconfig $multicast_host" <<EOF
/^ inet /p
EOF
fi 2> /dev/null`
if [ "X${maddr}" != "X" ]; then
set $maddr
route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
else
route -qn add -net 224.0.0.0/4 -interface \
127.0.0.1 -reject > /dev/null
fi
;;
*:*)
echo 'config error, multicasting disabled until rc.conf is fixed'
route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
;;
esac
# Configure PPPoE, GIF, GRE and TUN interfaces, delayed because they require
# routes to be set. TUN might depend on PPPoE, and GIF or GRE may depend on
# either of them.
ifmstart "pppoe tun gif gre bridge"
# reject 127/8 other than 127.0.0.1
route -qn add -net 127 127.0.0.1 -reject > /dev/null
if [ "$ip6kernel" = "YES" ]; then
# this is to make sure DAD is completed before going further.
count=0
while [ $((count++)) -lt 10 -a "x"`sysctl -n net.inet6.ip6.dad_pending` != "x0" ]; do
sleep 1
done
fi