ud-replicate

   1 #! /bin/bash
   2
   3 #   Copyright (c) 1999-2001  Jason Gunthorpe <jgg@debian.org>
   4 #   Copyright (c) 2002-2003,2006  Ryan Murray <rmurray@debian.org>
   5 #   Copyright (c) 2004-2005  Joey Schulze <joey@infodrom.org>
   6 #   Copyright (c) 2008 Peter Palfrader <peter@palfrader.org>
   7 #   Copyright (c) 2008 Stephen Gran <sgran@debian.org>
   8 #
   9 #   This program is free software; you can redistribute it and/or modify
  10 #   it under the terms of the GNU General Public License as published by
  11 #   the Free Software Foundation; either version 2 of the License, or
  12 #   (at your option) any later version.
  13 #
  14 #   This program is distributed in the hope that it will be useful,
  15 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 #   GNU General Public License for more details.
  18 #
  19 #   You should have received a copy of the GNU General Public License
  20 #   along with this program; if not, write to the Free Software
  21 #   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22
  23 set -e
  24
  25 # Without effect on the commandline
  26 if [ -z "$TERM" -o "$TERM" = "dumb" ]
  27 then
  28     exec > /dev/null 2>&1
  29     sleep $(( $RANDOM % 120 ))
  30 else
  31     verbose=-v
  32 fi
  33
  34 tempdir=''
  35
  36 cleanup ()
  37 {
  38   rm -f lock
  39   rm -rf $tempdir
  40 }
  41
  42 PATH=/sbin:/usr/sbin:/bin:/usr/bin
  43 export PATH
  44 HOST=`hostname -f`
  45 SYNCHOST=`ud-config synchost`;
  46 LOCALSYNCON=`ud-config localsyncon`;
  47 EMAILAPPEND=`ud-config emailappend`;
  48 cd /tmp/
  49 cd /var/lib/misc || cd /var/state/glibc/ || cd /var/db/
  50 lockfile -r 1 -l 3600 lock
  51 trap cleanup exit
  52
  53 case $HOST in
  54 $LOCALSYNCON)
  55     udhost=
  56     ;;
  57 *)
  58     udhost="sshdist@$SYNCHOST:"
  59     ;;
  60 esac
  61
  62 rsync ${verbose} --delete-after -e 'ssh -i /etc/ssh/ssh_host_rsa_key -o PreferredAuthentications=publickey' -rp "${udhost}/var/cache/userdir-ldap/hosts/$HOST" .
  63
  64 makedb "$HOST/passwd.tdb" -o passwd.db.t
  65 if [ -s "$HOST/shadow.tdb" ]
  66 then
  67     (umask 027 && makedb "$HOST/shadow.tdb" -o shadow.db.t)
  68     chown root.shadow shadow.db.t
  69     chmod 0640 shadow.db.t
  70     mv -f shadow.db.t shadow.db
  71 fi
  72 makedb "$HOST/group.tdb" -o group.db.t
  73 mv -f passwd.db.t passwd.db
  74 mv -f group.db.t group.db
  75 for a in $HOST/ssh-rsa-shadow $HOST/ssh_known_hosts; do
  76         ln -sf $a .
  77 done
  78 ln -sf `pwd -P`/ssh-rsa-shadow /etc/ssh
  79 ln -sf `pwd -P`/ssh_known_hosts /etc/ssh
  80
  81 if [ -e ${HOST}/ssh-keys.tar.gz ]; then
  82   export TMPDIR='/tmp/'
  83   tempdir=$(mktemp -d)
  84   tar -C "$tempdir" -xf ${HOST}/ssh-keys.tar.gz
  85   mkdir -p userkeys
  86   chmod 755 $tempdir
  87   rsync -a --delete-after $tempdir/ userkeys/
  88 fi
  89
  90 CHROOTS=""
  91 if [ -x /usr/bin/dchroot ]; then
  92         CHROOTS=`dchroot --listpaths`
  93 elif [ -x /usr/bin/dchroot-dsa ]; then
  94         CHROOTS=$(dchroot-dsa -i | grep Location | awk '{print $2}')
  95 fi
  96 if [ -n "$CHROOTS" ]; then
  97         for c in $CHROOTS; do
  98                 if [ "$c" = "/" ] || [ "$c" = "" ]; then
  99                         echo "$0 WTF: \$c is '' or '/' here." 2>&1
 100                         exit 1
 101                 fi
 102                 if [ -x "$c/usr/bin/makedb" ]
 103                 then
 104                         mkdir -p "$c/var/lib/misc/$HOST"
 105
 106                         # remove extra stuff from earlier times and so
 107                         find "$c/var/lib/misc/$HOST" -mindepth 1 \
 108                                 ! -name group.tdb -a \
 109                                 ! -name passwd.tdb -a \
 110                                 ! -name ssh_known_hosts \
 111                                 -print0 | xargs --no-run-if-empty -0 rm -f
 112                         rsync -a ${verbose} $HOST/group.tdb $HOST/passwd.tdb $HOST/ssh_known_hosts "$c/var/lib/misc/$HOST"
 113
 114                         # clean up from the times we supposedly did shadow stuff in chroots
 115                         rm -f "$c/var/lib/misc/shadow.db"
 116
 117                         # from failed makedb runs earlier.
 118                         rm -f "$c/var/lib/misc/passwd.db.t" \
 119                               "$c/var/lib/misc/group.db.t"
 120                         # build passwd information
 121                         chroot "$c" makedb "/var/lib/misc/$HOST/passwd.tdb" -o /var/lib/misc/passwd.db.t
 122                         chroot "$c" makedb "/var/lib/misc/$HOST/group.tdb" -o /var/lib/misc/group.db.t
 123                         mv -f "$c/var/lib/misc/passwd.db.t" "$c/var/lib/misc/passwd.db"
 124                         mv -f "$c/var/lib/misc/group.db.t" "$c/var/lib/misc/group.db"
 125
 126                         ln -sf "$HOST/ssh_known_hosts" "$c/var/lib/misc/"
 127                         if [ -d "$c/etc/ssh" ]; then
 128                                 ln -sf ../../var/lib/misc/ssh_known_hosts "$c/etc/ssh"
 129                         elif [ -L "$c/etc/ssh" ] && [ "`readlink \"$c/etc/ssh\"`" = "../../var/lib/misc/ssh_known_hosts" ]; then
 130                                 # clean up past mistakes
 131                                 rm -f "$c/etc/ssh"
 132                         fi
 133                 fi
 134         done
 135 fi
 136
 137 if [ -d "/etc/exim4" -a -e "$HOST/bsmtp" ]; then
 138         if perl -e 'exit !((stat "/etc/exim4/bsmtp")[9] < time()-3600)'; then
 139                 cp "$HOST/bsmtp" /etc/exim4/bsmtp
 140         fi
 141 fi
 142 if [ -d "/etc/postfix" -a -f "$HOST/forward-alias" ]; then
 143         sed -e "s/:/@$EMAILAPPEND/" $HOST/forward-alias > /etc/postfix/debian
 144         /usr/sbin/postmap hash:/etc/postfix/debian < /etc/postfix/debian || true
 145 fi