316e599449
Split each domain again after striping any trailing dot. Reported by: dumbbell Obtained from: openresolv (53416cf1b4)
792 lines
17 KiB
Bash
792 lines
17 KiB
Bash
#!/bin/sh
|
|
# Copyright (c) 2007-2016 Roy Marples
|
|
# All rights reserved
|
|
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above
|
|
# copyright notice, this list of conditions and the following
|
|
# disclaimer in the documentation and/or other materials provided
|
|
# with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
RESOLVCONF="$0"
|
|
SYSCONFDIR=@SYSCONFDIR@
|
|
LIBEXECDIR=@LIBEXECDIR@
|
|
VARDIR=@VARDIR@
|
|
|
|
# Disregard dhcpcd setting
|
|
unset interface_order state_dir
|
|
|
|
# If you change this, change the test in VFLAG and libc.in as well
|
|
local_nameservers="127.* 0.0.0.0 255.255.255.255 ::1"
|
|
|
|
dynamic_order="tap[0-9]* tun[0-9]* vpn vpn[0-9]* ppp[0-9]* ippp[0-9]*"
|
|
interface_order="lo lo[0-9]*"
|
|
name_server_blacklist="0.0.0.0"
|
|
|
|
# Support original resolvconf configuration layout
|
|
# as well as the openresolv config file
|
|
if [ -f "$SYSCONFDIR"/resolvconf.conf ]; then
|
|
. "$SYSCONFDIR"/resolvconf.conf
|
|
[ -n "$state_dir" ] && VARDIR="$state_dir"
|
|
elif [ -d "$SYSCONFDIR/resolvconf" ]; then
|
|
SYSCONFDIR="$SYSCONFDIR/resolvconf"
|
|
if [ -f "$SYSCONFDIR"/interface-order ]; then
|
|
interface_order="$(cat "$SYSCONFDIR"/interface-order)"
|
|
fi
|
|
fi
|
|
IFACEDIR="$VARDIR/interfaces"
|
|
METRICDIR="$VARDIR/metrics"
|
|
PRIVATEDIR="$VARDIR/private"
|
|
EXCLUSIVEDIR="$VARDIR/exclusive"
|
|
LOCKDIR="$VARDIR/lock"
|
|
_PWD="$PWD"
|
|
|
|
warn()
|
|
{
|
|
echo "$*" >&2
|
|
}
|
|
|
|
error_exit()
|
|
{
|
|
echo "$*" >&2
|
|
exit 1
|
|
}
|
|
|
|
usage()
|
|
{
|
|
cat <<-EOF
|
|
Usage: ${RESOLVCONF##*/} [options]
|
|
|
|
Inform the system about any DNS updates.
|
|
|
|
Options:
|
|
-a \$INTERFACE Add DNS information to the specified interface
|
|
(DNS supplied via stdin in resolv.conf format)
|
|
-m metric Give the added DNS information a metric
|
|
-p Mark the interface as private
|
|
-x Mark the interface as exclusive
|
|
-d \$INTERFACE Delete DNS information from the specified interface
|
|
-f Ignore non existant interfaces
|
|
-I Init the state dir
|
|
-u Run updates from our current DNS information
|
|
-l [\$PATTERN] Show DNS information, optionally from interfaces
|
|
that match the specified pattern
|
|
-i [\$PATTERN] Show interfaces that have supplied DNS information
|
|
optionally from interfaces that match the specified
|
|
pattern
|
|
-v [\$PATTERN] echo NEWDOMAIN, NEWSEARCH and NEWNS variables to
|
|
the console
|
|
-h Show this help cruft
|
|
EOF
|
|
[ -z "$1" ] && exit 0
|
|
echo
|
|
error_exit "$*"
|
|
}
|
|
|
|
echo_resolv()
|
|
{
|
|
local line= OIFS="$IFS"
|
|
|
|
[ -n "$1" -a -f "$IFACEDIR/$1" ] || return 1
|
|
echo "# resolv.conf from $1"
|
|
# Our variable maker works of the fact each resolv.conf per interface
|
|
# is separated by blank lines.
|
|
# So we remove them when echoing them.
|
|
while read -r line; do
|
|
IFS="$OIFS"
|
|
if [ -n "$line" ]; then
|
|
# We need to set IFS here to preserve any whitespace
|
|
IFS=''
|
|
printf "%s\n" "$line"
|
|
fi
|
|
done < "$IFACEDIR/$1"
|
|
echo
|
|
IFS="$OIFS"
|
|
}
|
|
|
|
# Strip any trailing dot from each name as a FQDN does not belong
|
|
# in resolv.conf(5)
|
|
# If you think otherwise, capture a DNS trace and you'll see libc
|
|
# will strip it regardless.
|
|
# This also solves setting up duplicate zones in our subscribers.
|
|
strip_trailing_dots()
|
|
{
|
|
local n= d=
|
|
|
|
for n; do
|
|
printf "$d%s" "${n%.}"
|
|
d=" "
|
|
done
|
|
printf "\n"
|
|
}
|
|
|
|
# Parse resolv.conf's and make variables
|
|
# for domain name servers, search name servers and global nameservers
|
|
parse_resolv()
|
|
{
|
|
local line= ns= ds= search= d= n= newns=
|
|
local new=true iface= private=false p= domain= l= islocal=
|
|
|
|
newns=
|
|
|
|
while read -r line; do
|
|
case "$line" in
|
|
"# resolv.conf from "*)
|
|
if ${new}; then
|
|
iface="${line#\# resolv.conf from *}"
|
|
new=false
|
|
if [ -e "$PRIVATEDIR/$iface" ]; then
|
|
private=true
|
|
else
|
|
# Allow expansion
|
|
cd "$IFACEDIR"
|
|
private=false
|
|
for p in $private_interfaces; do
|
|
case "$iface" in
|
|
"$p"|"$p":*) private=true; break;;
|
|
esac
|
|
done
|
|
fi
|
|
fi
|
|
;;
|
|
"nameserver "*)
|
|
islocal=false
|
|
for l in $local_nameservers; do
|
|
case "${line#* }" in
|
|
$l)
|
|
islocal=true
|
|
echo "LOCALNAMESERVERS=\"\$LOCALNAMESERVERS ${line#* }\""
|
|
break
|
|
;;
|
|
esac
|
|
done
|
|
$islocal || ns="$ns${line#* } "
|
|
;;
|
|
"domain "*)
|
|
search="$(strip_trailing_dots ${line#* })"
|
|
if [ -z "$domain" ]; then
|
|
domain="$search"
|
|
echo "DOMAIN=\"$domain\""
|
|
fi
|
|
;;
|
|
"search "*)
|
|
search="$(strip_trailing_dots ${line#* })"
|
|
;;
|
|
*)
|
|
[ -n "$line" ] && continue
|
|
if [ -n "$ns" -a -n "$search" ]; then
|
|
newns=
|
|
for n in $ns; do
|
|
newns="$newns${newns:+,}$n"
|
|
done
|
|
ds=
|
|
for d in $search; do
|
|
ds="$ds${ds:+ }$d:$newns"
|
|
done
|
|
echo "DOMAINS=\"\$DOMAINS $ds\""
|
|
fi
|
|
echo "SEARCH=\"\$SEARCH $search\""
|
|
if ! $private; then
|
|
echo "NAMESERVERS=\"\$NAMESERVERS $ns\""
|
|
fi
|
|
ns=
|
|
search=
|
|
new=true
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
uniqify()
|
|
{
|
|
local result=
|
|
while [ -n "$1" ]; do
|
|
case " $result " in
|
|
*" $1 "*);;
|
|
*) result="$result $1";;
|
|
esac
|
|
shift
|
|
done
|
|
echo "${result# *}"
|
|
}
|
|
|
|
dirname()
|
|
{
|
|
local dir= OIFS="$IFS"
|
|
local IFS=/
|
|
set -- $@
|
|
IFS="$OIFS"
|
|
if [ -n "$1" ]; then
|
|
printf %s .
|
|
else
|
|
shift
|
|
fi
|
|
while [ -n "$2" ]; do
|
|
printf "/%s" "$1"
|
|
shift
|
|
done
|
|
printf "\n"
|
|
}
|
|
|
|
config_mkdirs()
|
|
{
|
|
local e=0 f d
|
|
for f; do
|
|
[ -n "$f" ] || continue
|
|
d="$(dirname "$f")"
|
|
if [ ! -d "$d" ]; then
|
|
if type install >/dev/null 2>&1; then
|
|
install -d "$d" || e=$?
|
|
else
|
|
mkdir "$d" || e=$?
|
|
fi
|
|
fi
|
|
done
|
|
return $e
|
|
}
|
|
|
|
list_resolv()
|
|
{
|
|
[ -d "$IFACEDIR" ] || return 0
|
|
|
|
local report=false list= retval=0 cmd="$1" excl=
|
|
shift
|
|
|
|
case "$IF_EXCLUSIVE" in
|
|
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
|
|
if [ -d "$EXCLUSIVEDIR" ]; then
|
|
cd "$EXCLUSIVEDIR"
|
|
for i in *; do
|
|
if [ -f "$i" ]; then
|
|
list="${i#* }"
|
|
break
|
|
fi
|
|
done
|
|
fi
|
|
excl=true
|
|
;;
|
|
*)
|
|
excl=false
|
|
;;
|
|
esac
|
|
|
|
# If we have an interface ordering list, then use that.
|
|
# It works by just using pathname expansion in the interface directory.
|
|
if [ -n "$1" ]; then
|
|
list="$*"
|
|
$force || report=true
|
|
elif ! $excl; then
|
|
cd "$IFACEDIR"
|
|
for i in $interface_order; do
|
|
[ -f "$i" ] && list="$list $i"
|
|
for ii in "$i":* "$i".*; do
|
|
[ -f "$ii" ] && list="$list $ii"
|
|
done
|
|
done
|
|
for i in $dynamic_order; do
|
|
if [ -e "$i" -a ! -e "$METRICDIR/"*" $i" ]; then
|
|
list="$list $i"
|
|
fi
|
|
for ii in "$i":* "$i".*; do
|
|
if [ -f "$ii" -a ! -e "$METRICDIR/"*" $ii" ]; then
|
|
list="$list $ii"
|
|
fi
|
|
done
|
|
done
|
|
if [ -d "$METRICDIR" ]; then
|
|
cd "$METRICDIR"
|
|
for i in *; do
|
|
[ -f "$i" ] && list="$list ${i#* }"
|
|
done
|
|
fi
|
|
list="$list *"
|
|
fi
|
|
|
|
cd "$IFACEDIR"
|
|
retval=1
|
|
for i in $(uniqify $list); do
|
|
# Only list interfaces which we really have
|
|
if ! [ -f "$i" ]; then
|
|
if $report; then
|
|
echo "No resolv.conf for interface $i" >&2
|
|
retval=2
|
|
fi
|
|
continue
|
|
fi
|
|
|
|
if [ "$cmd" = i -o "$cmd" = "-i" ]; then
|
|
printf %s "$i "
|
|
else
|
|
echo_resolv "$i"
|
|
fi
|
|
[ $? = 0 -a "$retval" = 1 ] && retval=0
|
|
done
|
|
[ "$cmd" = i -o "$cmd" = "-i" ] && echo
|
|
return $retval
|
|
}
|
|
|
|
list_remove() {
|
|
local list= e= l= result= found= retval=0
|
|
|
|
[ -z "$2" ] && return 0
|
|
eval list=\"\$$1\"
|
|
shift
|
|
|
|
set -f
|
|
for e; do
|
|
found=false
|
|
for l in $list; do
|
|
case "$e" in
|
|
$l) found=true;;
|
|
esac
|
|
$found && break
|
|
done
|
|
if $found; then
|
|
retval=$(($retval + 1))
|
|
else
|
|
result="$result $e"
|
|
fi
|
|
done
|
|
set +f
|
|
echo "${result# *}"
|
|
return $retval
|
|
}
|
|
|
|
echo_prepend()
|
|
{
|
|
echo "# Generated by resolvconf"
|
|
if [ -n "$search_domains" ]; then
|
|
echo "search $search_domains"
|
|
fi
|
|
for n in $name_servers; do
|
|
echo "nameserver $n"
|
|
done
|
|
echo
|
|
}
|
|
|
|
echo_append()
|
|
{
|
|
echo "# Generated by resolvconf"
|
|
if [ -n "$search_domains_append" ]; then
|
|
echo "search $search_domains_append"
|
|
fi
|
|
for n in $name_servers_append; do
|
|
echo "nameserver $n"
|
|
done
|
|
echo
|
|
}
|
|
|
|
replace()
|
|
{
|
|
local r= k= f= v= val= sub=
|
|
|
|
while read -r keyword value; do
|
|
for r in $replace; do
|
|
k="${r%%/*}"
|
|
r="${r#*/}"
|
|
f="${r%%/*}"
|
|
r="${r#*/}"
|
|
v="${r%%/*}"
|
|
case "$keyword" in
|
|
$k)
|
|
case "$value" in
|
|
$f) value="$v";;
|
|
esac
|
|
;;
|
|
esac
|
|
done
|
|
val=
|
|
for sub in $value; do
|
|
for r in $replace_sub; do
|
|
k="${r%%/*}"
|
|
r="${r#*/}"
|
|
f="${r%%/*}"
|
|
r="${r#*/}"
|
|
v="${r%%/*}"
|
|
case "$keyword" in
|
|
$k)
|
|
case "$sub" in
|
|
$f) sub="$v";;
|
|
esac
|
|
;;
|
|
esac
|
|
done
|
|
val="$val${val:+ }$sub"
|
|
done
|
|
printf "%s %s\n" "$keyword" "$val"
|
|
done
|
|
}
|
|
|
|
make_vars()
|
|
{
|
|
local newdomains= d= dn= newns= ns=
|
|
|
|
# Clear variables
|
|
DOMAIN=
|
|
DOMAINS=
|
|
SEARCH=
|
|
NAMESERVERS=
|
|
LOCALNAMESERVERS=
|
|
|
|
if [ -n "$name_servers" -o -n "$search_domains" ]; then
|
|
eval "$(echo_prepend | parse_resolv)"
|
|
fi
|
|
if [ -z "$VFLAG" ]; then
|
|
IF_EXCLUSIVE=1
|
|
list_resolv -i "$@" >/dev/null || IF_EXCLUSIVE=0
|
|
eval "$(list_resolv -l "$@" | replace | parse_resolv)"
|
|
fi
|
|
if [ -n "$name_servers_append" -o -n "$search_domains_append" ]; then
|
|
eval "$(echo_append | parse_resolv)"
|
|
fi
|
|
|
|
# Ensure that we only list each domain once
|
|
for d in $DOMAINS; do
|
|
dn="${d%%:*}"
|
|
list_remove domain_blacklist "$dn" >/dev/null || continue
|
|
case " $newdomains" in
|
|
*" ${dn}:"*) continue;;
|
|
esac
|
|
newns=
|
|
for nd in $DOMAINS; do
|
|
if [ "$dn" = "${nd%%:*}" ]; then
|
|
ns="${nd#*:}"
|
|
while [ -n "$ns" ]; do
|
|
case ",$newns," in
|
|
*,${ns%%,*},*) ;;
|
|
*) list_remove name_server_blacklist \
|
|
"${ns%%,*}" >/dev/null \
|
|
&& newns="$newns${newns:+,}${ns%%,*}";;
|
|
esac
|
|
[ "$ns" = "${ns#*,}" ] && break
|
|
ns="${ns#*,}"
|
|
done
|
|
fi
|
|
done
|
|
if [ -n "$newns" ]; then
|
|
newdomains="$newdomains${newdomains:+ }$dn:$newns"
|
|
fi
|
|
done
|
|
DOMAIN="$(list_remove domain_blacklist $DOMAIN)"
|
|
SEARCH="$(uniqify $SEARCH)"
|
|
SEARCH="$(list_remove domain_blacklist $SEARCH)"
|
|
NAMESERVERS="$(uniqify $NAMESERVERS)"
|
|
NAMESERVERS="$(list_remove name_server_blacklist $NAMESERVERS)"
|
|
LOCALNAMESERVERS="$(uniqify $LOCALNAMESERVERS)"
|
|
LOCALNAMESERVERS="$(list_remove name_server_blacklist $LOCALNAMESERVERS)"
|
|
echo "DOMAIN='$DOMAIN'"
|
|
echo "SEARCH='$SEARCH'"
|
|
echo "NAMESERVERS='$NAMESERVERS'"
|
|
echo "LOCALNAMESERVERS='$LOCALNAMESERVERS'"
|
|
echo "DOMAINS='$newdomains'"
|
|
}
|
|
|
|
force=false
|
|
VFLAG=
|
|
while getopts a:Dd:fhIilm:puvVx OPT; do
|
|
case "$OPT" in
|
|
f) force=true;;
|
|
h) usage;;
|
|
m) IF_METRIC="$OPTARG";;
|
|
p) IF_PRIVATE=1;;
|
|
V)
|
|
VFLAG=1
|
|
if [ "$local_nameservers" = \
|
|
"127.* 0.0.0.0 255.255.255.255 ::1" ]
|
|
then
|
|
local_nameservers=
|
|
fi
|
|
;;
|
|
x) IF_EXCLUSIVE=1;;
|
|
'?') ;;
|
|
*) cmd="$OPT"; iface="$OPTARG";;
|
|
esac
|
|
done
|
|
shift $(($OPTIND - 1))
|
|
args="$iface${iface:+ }$*"
|
|
|
|
# -I inits the state dir
|
|
if [ "$cmd" = I ]; then
|
|
if [ -d "$VARDIR" ]; then
|
|
rm -rf "$VARDIR"/*
|
|
fi
|
|
exit $?
|
|
fi
|
|
|
|
# -D ensures that the listed config file base dirs exist
|
|
if [ "$cmd" = D ]; then
|
|
config_mkdirs "$@"
|
|
exit $?
|
|
fi
|
|
|
|
# -l lists our resolv files, optionally for a specific interface
|
|
if [ "$cmd" = l -o "$cmd" = i ]; then
|
|
list_resolv "$cmd" "$args"
|
|
exit $?
|
|
fi
|
|
|
|
# Not normally needed, but subscribers should be able to run independently
|
|
if [ "$cmd" = v -o -n "$VFLAG" ]; then
|
|
make_vars "$iface"
|
|
exit $?
|
|
fi
|
|
|
|
# Test that we have valid options
|
|
if [ "$cmd" = a -o "$cmd" = d ]; then
|
|
if [ -z "$iface" ]; then
|
|
usage "Interface not specified"
|
|
fi
|
|
elif [ "$cmd" != u ]; then
|
|
[ -n "$cmd" -a "$cmd" != h ] && usage "Unknown option $cmd"
|
|
usage
|
|
fi
|
|
|
|
if [ "$cmd" = a ]; then
|
|
for x in '/' \\ ' ' '*'; do
|
|
case "$iface" in
|
|
*[$x]*) error_exit "$x not allowed in interface name";;
|
|
esac
|
|
done
|
|
for x in '.' '-' '~'; do
|
|
case "$iface" in
|
|
[$x]*) error_exit \
|
|
"$x not allowed at start of interface name";;
|
|
esac
|
|
done
|
|
[ "$cmd" = a -a -t 0 ] && error_exit "No file given via stdin"
|
|
fi
|
|
|
|
if [ ! -d "$VARDIR" ]; then
|
|
if [ -L "$VARDIR" ]; then
|
|
dir="$(readlink "$VARDIR")"
|
|
# link maybe relative
|
|
cd "${VARDIR%/*}"
|
|
if ! mkdir -m 0755 -p "$dir"; then
|
|
error_exit "Failed to create needed" \
|
|
"directory $dir"
|
|
fi
|
|
else
|
|
if ! mkdir -m 0755 -p "$VARDIR"; then
|
|
error_exit "Failed to create needed" \
|
|
"directory $VARDIR"
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
if [ ! -d "$IFACEDIR" ]; then
|
|
mkdir -m 0755 -p "$IFACEDIR" || \
|
|
error_exit "Failed to create needed directory $IFACEDIR"
|
|
if [ "$cmd" = d ]; then
|
|
# Provide the same error messages as below
|
|
if ! ${force}; then
|
|
cd "$IFACEDIR"
|
|
for i in $args; do
|
|
warn "No resolv.conf for interface $i"
|
|
done
|
|
fi
|
|
${force}
|
|
exit $?
|
|
fi
|
|
fi
|
|
|
|
# An interface was added, changed, deleted or a general update was called.
|
|
# Due to exclusivity we need to ensure that this is an atomic operation.
|
|
# Our subscribers *may* need this as well if the init system is sub par.
|
|
# As such we spinlock at this point as best we can.
|
|
# We don't use flock(1) because it's not widely available and normally resides
|
|
# in /usr which we do our very best to operate without.
|
|
[ -w "$VARDIR" ] || error_exit "Cannot write to $LOCKDIR"
|
|
: ${lock_timeout:=10}
|
|
while true; do
|
|
if mkdir "$LOCKDIR" 2>/dev/null; then
|
|
trap 'rm -rf "$LOCKDIR";' EXIT
|
|
trap 'rm -rf "$LOCKDIR"; exit 1' INT QUIT ABRT SEGV ALRM TERM
|
|
echo $$ >"$LOCKDIR/pid"
|
|
break
|
|
fi
|
|
pid=$(cat "$LOCKDIR/pid")
|
|
if ! kill -0 "$pid"; then
|
|
warn "clearing stale lock pid $pid"
|
|
rm -rf "$LOCKDIR"
|
|
continue
|
|
fi
|
|
lock_timeout=$(($lock_timeout - 1))
|
|
if [ "$lock_timeout" -le 0 ]; then
|
|
error_exit "timed out waiting for lock from pid $pid"
|
|
fi
|
|
sleep 1
|
|
done
|
|
|
|
case "$cmd" in
|
|
a)
|
|
# Read resolv.conf from stdin
|
|
resolv="$(cat)"
|
|
changed=false
|
|
changedfile=false
|
|
# If what we are given matches what we have, then do nothing
|
|
if [ -e "$IFACEDIR/$iface" ]; then
|
|
if [ "$(echo "$resolv")" != \
|
|
"$(cat "$IFACEDIR/$iface")" ]
|
|
then
|
|
changed=true
|
|
changedfile=true
|
|
fi
|
|
else
|
|
changed=true
|
|
changedfile=true
|
|
fi
|
|
|
|
# Set metric and private before creating the interface resolv.conf file
|
|
# to ensure that it will have the correct flags
|
|
[ ! -d "$METRICDIR" ] && mkdir "$METRICDIR"
|
|
oldmetric="$METRICDIR/"*" $iface"
|
|
newmetric=
|
|
if [ -n "$IF_METRIC" ]; then
|
|
# Pad metric to 6 characters, so 5 is less than 10
|
|
while [ ${#IF_METRIC} -le 6 ]; do
|
|
IF_METRIC="0$IF_METRIC"
|
|
done
|
|
newmetric="$METRICDIR/$IF_METRIC $iface"
|
|
fi
|
|
rm -f "$METRICDIR/"*" $iface"
|
|
[ "$oldmetric" != "$newmetric" -a \
|
|
"$oldmetric" != "$METRICDIR/* $iface" ] &&
|
|
changed=true
|
|
[ -n "$newmetric" ] && echo " " >"$newmetric"
|
|
|
|
case "$IF_PRIVATE" in
|
|
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
|
|
if [ ! -d "$PRIVATEDIR" ]; then
|
|
[ -e "$PRIVATEDIR" ] && rm "$PRIVATEDIR"
|
|
mkdir "$PRIVATEDIR"
|
|
fi
|
|
[ -e "$PRIVATEDIR/$iface" ] || changed=true
|
|
[ -d "$PRIVATEDIR" ] && echo " " >"$PRIVATEDIR/$iface"
|
|
;;
|
|
*)
|
|
if [ -e "$PRIVATEDIR/$iface" ]; then
|
|
rm -f "$PRIVATEDIR/$iface"
|
|
changed=true
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
oldexcl=
|
|
for x in "$EXCLUSIVEDIR/"*" $iface"; do
|
|
if [ -f "$x" ]; then
|
|
oldexcl="$x"
|
|
break
|
|
fi
|
|
done
|
|
case "$IF_EXCLUSIVE" in
|
|
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
|
|
if [ ! -d "$EXCLUSIVEDIR" ]; then
|
|
[ -e "$EXCLUSIVEDIR" ] && rm "$EXCLUSIVEDIR"
|
|
mkdir "$EXCLUSIVEDIR"
|
|
fi
|
|
cd "$EXCLUSIVEDIR"
|
|
for x in *; do
|
|
[ -f "$x" ] && break
|
|
done
|
|
if [ "${x#* }" != "$iface" ]; then
|
|
if [ "$x" = "${x% *}" ]; then
|
|
x=10000000
|
|
else
|
|
x="${x% *}"
|
|
fi
|
|
if [ "$x" = "0000000" ]; then
|
|
warn "exclusive underflow"
|
|
else
|
|
x=$(($x - 1))
|
|
fi
|
|
if [ -d "$EXCLUSIVEDIR" ]; then
|
|
echo " " >"$EXCLUSIVEDIR/$x $iface"
|
|
fi
|
|
changed=true
|
|
fi
|
|
;;
|
|
*)
|
|
if [ -f "$oldexcl" ]; then
|
|
rm -f "$oldexcl"
|
|
changed=true
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
if $changedfile; then
|
|
printf "%s\n" "$resolv" >"$IFACEDIR/$iface" || exit $?
|
|
elif ! $changed; then
|
|
exit 0
|
|
fi
|
|
unset changed changedfile oldmetric newmetric x oldexcl
|
|
;;
|
|
|
|
d)
|
|
# Delete any existing information about the interface
|
|
cd "$IFACEDIR"
|
|
changed=false
|
|
for i in $args; do
|
|
if [ -e "$i" ]; then
|
|
changed=true
|
|
elif ! ${force}; then
|
|
warn "No resolv.conf for interface $i"
|
|
fi
|
|
rm -f "$i" "$METRICDIR/"*" $i" \
|
|
"$PRIVATEDIR/$i" \
|
|
"$EXCLUSIVEDIR/"*" $i" || exit $?
|
|
done
|
|
if ! ${changed}; then
|
|
# Set the return code based on the forced flag
|
|
${force}
|
|
exit $?
|
|
fi
|
|
unset changed i
|
|
;;
|
|
esac
|
|
|
|
case "${resolvconf:-YES}" in
|
|
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
|
|
*) exit 0;;
|
|
esac
|
|
|
|
eval "$(make_vars)"
|
|
export RESOLVCONF DOMAINS SEARCH NAMESERVERS LOCALNAMESERVERS
|
|
: ${list_resolv:=list_resolv -l}
|
|
retval=0
|
|
|
|
# Run scripts in the same directory resolvconf is run from
|
|
# in case any scripts accidently dump files in the wrong place.
|
|
cd "$_PWD"
|
|
for script in "$LIBEXECDIR"/*; do
|
|
if [ -f "$script" ]; then
|
|
eval script_enabled="\$${script##*/}"
|
|
case "${script_enabled:-YES}" in
|
|
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
|
|
*) continue;;
|
|
esac
|
|
if [ -x "$script" ]; then
|
|
"$script" "$cmd" "$iface"
|
|
else
|
|
(set -- "$cmd" "$iface"; . "$script")
|
|
fi
|
|
retval=$(($retval + $?))
|
|
fi
|
|
done
|
|
exit $retval
|