141 lines
3.4 KiB
Bash
141 lines
3.4 KiB
Bash
#!/bin/sh
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# Gregory Colpart <reg@evolix.fr>
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# chroot script for OpenSSH
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# $Id: chroot-ssh.sh,v 1.12 2010-07-02 17:40:29 gcolpart Exp $
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# tested on Debian Etch and recently on Lenny
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# Exec this script for jail creation:
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# ./chroot-ssh.sh /backup/jails/myserver
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# Note: etc/{sshd_config,group,passwd} files should be present
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# For Etch
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# Start: chroot /backup/jails/myserver /usr/sbin/sshd > /dev/null
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# Reload: kill -HUP `chroot /backup/jails/myserver cat /var/run/sshd.pid`
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# Stop: kill -9 `chroot /backup/jails/myserver cat /var/run/sshd.pid`
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# Restart: Stop + Start
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# For Lenny
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# Start :
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# chroot /backup/jails/myserver mount -t proc proc-chroot /proc/
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# chroot /backup/jails/myserver mount -t devpts devpts-chroot /dev/pts/
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# chroot /backup/jails/myserver /usr/sbin/sshd > /dev/null
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# Reload: kill -HUP `chroot /backup/jails/myserver cat /var/run/sshd.pid`
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# Stop: kill -9 `chroot /backup/jails/myserver cat /var/run/sshd.pid`
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# Restart:
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# kill -9 `chroot /backup/jails/myserver cat /var/run/sshd.pid`
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# chroot /backup/jails/myserver /usr/sbin/sshd > /dev/null
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# After *each* ssh upgrade or libs upgrade:
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# sh chroot-ssh.sh updateall
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# And restart all sshd daemons
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bincopy() {
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chrootdir=$1
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# TODO : better detection of amd64 arch
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cp -f /lib/ld-linux.so.2 $chrootdir/lib/ || cp -f /lib64/ld-linux-x86-64.so.2 $chrootdir/lib64/
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cp /lib/libnss* $chrootdir/lib/
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for dbin in /bin/bash /bin/cat /bin/chown /bin/mknod /bin/rm /bin/sed /bin/sh /bin/uname /bin/mount /usr/bin/rsync /usr/sbin/sshd /usr/lib/openssh/sftp-server; do
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cp -f $dbin $chrootdir/$dbin;
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# (comme dans http://www.gcolpart.com/hacks/chroot-bind.sh)
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for lib in `ldd $dbin | cut -d">" -f2 | cut -d"(" -f1`; do
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cp -p $lib $chrootdir/$lib
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done
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done
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}
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# synopsis
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if [ $# -ne 1 ]; then
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echo "Vous devez indiquer un repertoire."
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echo "Exemple : chroot-ssh.sh /backup/jails/myserver"
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exit 0
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fi
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# are u root?
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if [ `whoami` != "root" ]; then
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echo "Vous devez executer le script en étant root."
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exit 0
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fi
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if [ -e $1 ]; then
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echo "Le repertoire $1 existe deja..."
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fi
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if [ "$1" = "updateall" ]; then
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for i in `ls -1 /backup/jails/*/lib/libnss_compat.so.2`; do
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chrootdir=`echo $i | cut -d"/" -f1,2,3,4`
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echo -n "MaJ $chrootdir ..."
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bincopy $chrootdir
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echo "...OK"
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done
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else
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# where is jail
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chrootdir=$1
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mkdir -p $chrootdir
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chown root:root $chrootdir
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# create jail
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echo -n "1 - Creation de la prison..."
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mkdir -p $chrootdir/{bin,dev,etc/ssh,lib,lib64}
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mkdir -p $chrootdir/lib/tls/i686/cmov/
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mkdir -p $chrootdir/proc
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mkdir -p $chrootdir/root/.ssh
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mkdir -p $chrootdir/usr/lib/i686/cmov/
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mkdir -p $chrootdir/lib/i686/cmov/
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mkdir -p $chrootdir/usr/{bin,lib,sbin}
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mkdir -p $chrootdir/usr/lib/openssh
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mkdir -p $chrootdir/var/log/
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mkdir -p $chrootdir/var/run/sshd
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touch $chrootdir/var/log/{authlog,lastlog,messages,syslog}
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touch $chrootdir/etc/fstab
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echo "...OK"
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echo -n "2 - Copie des donnees..."
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cp /proc/devices $chrootdir/proc
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cp /etc/ssh/{ssh_host_rsa_key,ssh_host_dsa_key} $chrootdir/etc/ssh/
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cp etc/sshd_config $chrootdir/etc/ssh/
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cp etc/passwd $chrootdir/etc/
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cp etc/shadow $chrootdir/etc/
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cp etc/group $chrootdir/etc/
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echo ".......OK"
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echo -n "3 - Copie des binaires..."
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bincopy $chrootdir
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echo "......OK"
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echo -n "4 - Creation des devices..."
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cd $chrootdir/dev/
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cp /dev/MAKEDEV ./
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./MAKEDEV {null,random,urandom,pty}
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mkdir pts
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#mknod ptmx c 5 2
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echo "....OK"
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echo -n "5 - Termine."
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# end
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echo ""
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fi
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