505ab59fa4
- Give libbind a pkg-config file
- remove restorecon from bind-chroot-admin (not required).
- fix named.caching-nameserver.conf (listen-on-v6 port 53 { ::1 };)
252 lines
7.4 KiB
Bash
252 lines
7.4 KiB
Bash
#!/bin/bash
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#
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# Script to control the bind-chroot ISC BIND named(8) server runtime environment.
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#
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# Usage:
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# [ -e | --enable ] [ -d | --disable ] | [ -s --sync ]
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#
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# -e | --enable: enable the bind-chroot environment
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# -d | --disable: disable the bind-chroot environment
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# -s | --sync: sync files between the bind chroot and / environments,
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# so they are correct for the current state of the bind-chroot
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# (enabled / disabled)
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# $BIND_CHROOT_PREFIX, default /var/named/chroot, is the location of the chroot.
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# $BIND_DIR, default /var/named, is the default un-chrooted bind directory.
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#
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# Copyright(C) 2006 Jason Vas Dias <jvdias@redhat.com>, Red Hat, Inc.
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#
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# This software is provided under the terms of the GNU
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# General Public License (GPL), as published at:
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# http://www.gnu.org/licenses/gpl.html .
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#
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#
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BIND_CHROOT_PREFIX=${BIND_CHROOT_PREFIX:-@BIND_CHROOT_PREFIX@}
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BIND_DIR=${BIND_DIR:-@BIND_DIR@}
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function usage()
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{
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echo 'Usage:
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-e | --enable: enable the bind-chroot environment
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-d | --disable: disable the bind-chroot environment
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-s | --sync: sync files between the bind chroot and / environments,
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so they are correct for the current state of the bind-chroot
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(enabled / disabled)
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$BIND_CHROOT_PREFIX, default /var/named/chroot, is the location of the chroot.
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$BIND_DIR, default /var/named, is the default un-chrooted bind directory.
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';
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}
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function rootdir()
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{
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. /etc/sysconfig/named
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if [ -n "$ROOTDIR" ]; then
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BIND_CHROOT_PREFIX="$ROOTDIR";
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BIND_CHROOT_PREFIX=`echo $BIND_CHROOT_PREFIX | sed 's#//*#/#g;s#/$##'`;
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if [ -L "$BIND_CHROOT_PREFIX" ]; then
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BIND_CHROOT_PREFIX=`/usr/bin/readlink "$BIND_CHROOT_PREFIX"`;
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fi
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return 0;
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fi;
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return 1;
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}
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function check_dirs()
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{
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if [ -z "$BIND_CHROOT_PREFIX" ]; then
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rootdir;
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if [ -z "$BIND_CHROOT_PREFIX" ]; then
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usage;
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exit 1;
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fi;
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fi
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BIND_DIR=`echo $BIND_DIR | sed 's#//*#/#g;s#/$##'`;
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if [ -L "$BIND_DIR" ]; then
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BIND_DIR=`/usr/bin/readlink "$BIND_DIR"`;
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fi
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BIND_CHROOT_PREFIX=`echo $BIND_CHROOT_PREFIX | sed 's#//*#/#g;s#/$##'`;
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if [ -L "$BIND_CHROOT_PREFIX" ]; then
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BIND_CHROOT_PREFIX=`/usr/bin/readlink "$BIND_CHROOT_PREFIX"`;
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fi
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/bin/mkdir -p ${BIND_DIR}/{slaves,data};
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/bin/chown root:named ${BIND_DIR};
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/bin/chown named:named ${BIND_DIR}/{slaves,data};
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/bin/chmod 750 ${BIND_DIR}
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/bin/chmod 770 ${BIND_DIR}/{slaves,data};
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mkdir -p ${BIND_CHROOT_PREFIX}/{etc,dev,var/{run/named,named/{slaves,data}}};
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/bin/chown root:named ${BIND_CHROOT_PREFIX}/{etc,dev,var/{run,named/}};
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/bin/chmod 750 ${BIND_CHROOT_PREFIX}/{,etc,dev,var,var/{run,named/}};
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/bin/chown named:named ${BIND_CHROOT_PREFIX}/var/{run/named,named/{data,slaves}};
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/bin/chmod 770 ${BIND_CHROOT_PREFIX}/var/{run/named,named/{slaves,data}};
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[ ! -e "${BIND_CHROOT_PREFIX}/dev/random" ] && /bin/mknod "${BIND_CHROOT_PREFIX}/dev/random" c 1 8
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[ ! -e "${BIND_CHROOT_PREFIX}/dev/zero" ] && /bin/mknod "${BIND_CHROOT_PREFIX}/dev/zero" c 1 5
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[ ! -e "${BIND_CHROOT_PREFIX}/dev/null" ] && /bin/mknod "${BIND_CHROOT_PREFIX}/dev/null" c 1 3
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[ ! -e "${BIND_CHROOT_PREFIX}/etc/localtime" ] && [ -e /etc/localtime ] && /bin/cp -fp /etc/localtime "${BIND_CHROOT_PREFIX}/etc/localtime";
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chmod 666 "${BIND_CHROOT_PREFIX}"/dev/{random,null,zero};
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if [ -d /selinux ] && [ -e /selinux/enforce ] && [ -x /usr/bin/chcon ]; then
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for dev in random zero null; do
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/usr/bin/chcon --reference=/dev/$dev ${BIND_CHROOT_PREFIX}/dev/$dev;
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done
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fi;
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}
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check_dirs;
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function replace_with_link()
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{ # replaces $dst second arg file with link to $src first arg file
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if [ $# -lt 2 ]; then
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return 1;
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fi;
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src=$1
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dst=$2
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if [ -z "$src" ] || [ -z "$dst" ] || [ "$src" = "$dst" ]; then
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return 1;
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fi
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if [ ! -e "$src" ]; then
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if [ ! -e "$dst" ]; then
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return 1;
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else
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if [ -L "$dst" ]; then
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dstlnk=`/usr/bin/readlink "$dst"`;
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if [ ! -e "$dstlnk" ] ; then
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return 1;
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fi
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rm -f "$dst";
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/bin/cp -fp "$dstlnk" "$dst";
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fi;
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/bin/mv "$dst" "$src";
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fi
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fi
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if [ -e "$dst" ]; then
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if [ ! -L "$dst" ]; then
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if [ ! -s "$dst" ]; then
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/bin/rm -f "$dst";
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else
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if [ "$src" -nt "$dst" ] || [ ! "$dst" -nt "$src" ] ; then
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/bin/mv "$dst" "$dst".`/bin/date +'%Y-%m-%d_%H-%M-%S.%N'`;
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else # [ "$dst" -nt "$src" ]
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/bin/mv "$src" "$src".`/bin/date +'%Y-%m-%d_%H-%M-%S.%N'`;
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/bin/mv "$dst" "$src";
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fi;
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fi;
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else
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dstlnk=`/usr/bin/readlink "$dst"`
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if [ "$dstlnk" != $src ]; then
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/bin/rm -f $dst;
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if [ "$dstlnk" != "$dst" ] && [ -s $dstlnk ]; then
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if [ "$dstlnk" -nt "$src" ] || [ ! "$dstlnk" -nt "$src" ] ; then
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/bin/cp -fp "$dstlnk" "$dst".`/bin/date +'%Y-%m-%d_%H-%M-%S.%N'`;
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else
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/bin/mv "$src" "$src".`/bin/date +'%Y-%m-%d_%H-%M-%S.%N'`;
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/bin/cp -fp "$dstlnk" "$src";
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fi;
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fi;
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else
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return 0;
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fi;
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fi;
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fi;
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/bin/ln -sf "$src" "$dst";
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return $?;
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}
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function replace_with_file()
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{
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if [ $# -lt 2 ]; then
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return 1;
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fi;
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src=$1;
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dst=$2;
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if [ -z "$src" ] || [ -z "$dst" ] || [ "$src" = "$dst" ]; then
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return 1;
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fi
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if [ ! -e "$src" ]; then
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if [ -e "$dst" ]; then
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/bin/rm -f $dst;
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fi;
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return 1;
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fi;
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if [ -e "$dst" ]; then
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if [ ! -L "$dst" ]; then
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/bin/mv "$dst" "$dst".`/bin/date +'%Y-%m-%d_%H-%M-%S.%N'`;
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else
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/bin/rm -f "$dst";
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fi;
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fi;
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/bin/mv -f "$src" "$dst";
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}
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function enable_bind_chroot()
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{
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if /bin/egrep -q '^ROOTDIR=' /etc/sysconfig/named; then
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/bin/sed -i -e 's#^ROOTDIR=.*$#ROOTDIR='${BIND_CHROOT_PREFIX}'#' /etc/sysconfig/named ;
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else
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echo 'ROOTDIR='${BIND_CHROOT_PREFIX} >> /etc/sysconfig/named;
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fi
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}
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function disable_bind_chroot()
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{
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/bin/sed -i -e '/^ROOTDIR=/d' /etc/sysconfig/named;
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}
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function sync_files()
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{
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shopt -q nullglob;
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ng=$?
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shopt -s nullglob;
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pfx=''
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if rootdir ; then # chroot is enabled
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/usr/bin/find /{etc/{named.*,rndc.*},${BIND_DIR#/}{/*,/data/*,/slaves/*}} -maxdepth 0 -type f |
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while read f;
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do
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replace_with_link ${BIND_CHROOT_PREFIX}/$f $f;
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done;
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pfx=${BIND_CHROOT_PREFIX}
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else # chroot is disabled
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/usr/bin/find /var/named/chroot/{etc/{named.*,rndc.*},var/named{/*,/data/*,/slaves/*}} -maxdepth 0 |
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while read f;
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do
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if [ ! -d "$f" ]; then
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replace_with_file $f ${f#$BIND_CHROOT_PREFIX};
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fi;
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done
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fi;
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if [ $ng -eq 1 ]; then
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shopt -u nullglob;
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fi;
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chown root:named ${pfx}/var/named/* >/dev/null 2>&1;
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chmod 750 ${pfx}/var/named >/dev/null 2>&1;
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chmod 640 ${pfx}/var/named/* >/dev/null 2>&1;
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chown named:named ${pfx}/var/named/{data{,/*},slaves{,*/}} >/dev/null 2>&1;
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chmod 770 ${pfx}/var/named/{data,slaves} >/dev/null 2>&1;
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chmod 640 ${pfx}/var/named/{data/*,slaves/*} >/dev/null 2>&1;
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}
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case $1 in
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-e|--enable)
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enable_bind_chroot;
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sync_files;
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/sbin/service named condrestart
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exit $?;
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;;
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-d|--disable)
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disable_bind_chroot;
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sync_files;
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/sbin/service named condrestart
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/bin/umount ${BIND_CHROOT_PREFIX}/proc >/dev/null 2>&1 || :;
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/bin/umount ${BIND_CHROOT_PREFIX}/var/run/dbus >/dev/null 2>&1 || :;
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exit $?;
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;;
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-s|--sync)
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sync_files;
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exit $?;
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;;
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-q)
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;;
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*)
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usage;
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exit 1;
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esac |