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Update Debian resolvconf script for dnscrypt-proxy integration.

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This commit is contained in:
Simon Kelley
2013-05-28 14:49:54 +01:00
parent 76dd75de77
commit 48493329d6
2 changed files with 34 additions and 13 deletions
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39
debian/resolvconf vendored
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@@ -1,16 +1,14 @@
#!/bin/bash
#!/bin/sh
#
# Script to update the resolver list for dnsmasq
#
# N.B. Resolvconf may run us even if dnsmasq is not running.
# If dnsmasq is installed then we go ahead and update
# the resolver list in case dnsmasq is started later.
# N.B. Resolvconf may run us even if dnsmasq is not (yet) running.
# If dnsmasq is installed then we go ahead and update the resolver list
# in case dnsmasq is started later.
#
# Assumption: On entry, PWD contains the resolv.conf-type files
# Assumption: On entry, PWD contains the resolv.conf-type files.
#
# Requires bash because it uses a non-POSIX printf extension.
#
# Licensed under the GNU GPL. See /usr/share/common-licenses/GPL.
# This file is part of the dnsmasq package.
#
set -e
@@ -18,6 +16,8 @@ set -e
RUN_DIR="/var/run/dnsmasq"
RSLVRLIST_FILE="${RUN_DIR}/resolv.conf"
TMP_FILE="${RSLVRLIST_FILE}_new.$$"
MY_RECORD_NAME="lo.dnsmasq"
DNSCRYPT_RECORD_NAME="lo.dnscrypt"
[ -x /usr/sbin/dnsmasq ] || exit 0
[ -x /lib/resolvconf/list-records ] || exit 1
@@ -27,7 +27,7 @@ PATH=/bin:/sbin
report_err() { echo "$0: Error: $*" >&2 ; }
# Stores arguments (minus duplicates) in RSLT, separated by spaces
# Doesn't work properly if an argument itself contain whitespace
# Doesn't work properly if an argument itself contains whitespace
uniquify()
{
RSLT=""
@@ -45,7 +45,22 @@ if [ ! -d "$RUN_DIR" ] && ! mkdir --parents --mode=0755 "$RUN_DIR" ; then
exit 1
fi
RSLVCNFFILES="$(/lib/resolvconf/list-records | sed -e '/^lo.dnsmasq$/d')"
RSLVCNFFILES=""
for F in $(/lib/resolvconf/list-records) ; do
case "$F" in
"$MY_RECORD_NAME")
# Omit
;;
"$DNSCRYPT_RECORD_NAME")
# Dnscrypt, I only have eyes for you
RSLVCNFFILES="$DNSCRYPT_RECORD_NAME"
break
;;
*)
RSLVCNFFILES="${RSLVCNFFILES:+$RSLVCNFFILES }$F"
;;
esac
done
NMSRVRS=""
if [ "$RSLVCNFFILES" ] ; then
@@ -56,8 +71,8 @@ fi
# Dnsmasq uses the mtime of $RSLVRLIST_FILE, with a resolution of one second,
# to detect changes in the file. This means that if a resolvconf update occurs
# within one second of the previous one then dnsmasq may fail to notice the
# more recent change. To work around this problem we sleep here to ensure
# that the new mtime is different.
# more recent change. To work around this problem we sleep one second here
# if necessary in order to ensure that the new mtime is different.
if [ -f "$RSLVRLIST_FILE" ] && [ "$(ls -go --time-style='+%s' "$RSLVRLIST_FILE" | { read p h s t n ; echo "$t" ; })" = "$(date +%s)" ] ; then
sleep 1
fi