/usr/share/doc/samhain/examples/chroot.sh is in samhain 3.1.0-5ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #! /bin/sh
# NOTE: tested on Debian Linux
#
# NO WARRANTY - may or may not work on your system
#
# Copyright Rainer Wichmann (2003)
#
# License Information:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
CHROOT=$1
SYSTEM=`uname -s`
if test "x$SYSTEM" = xLinux; then
:
else
echo "This script will fail on systems other than Linux,"
echo "mainly because of the mknod commands to create devices"
echo "in the chroot jail."
exit 1
fi
if test "x$CHROOT" = x; then
echo "Usage: chroot.sh chroot_dir"
echo "Purpose: prepare a chroot jail for yule"
echo
echo "NOTE: tested on Debian Linux"
echo "NO WARRANTY - may or may not work on your system"
exit 1
fi
#
# Link configuration file
#
echo " Link configuration file:"
echo " ln -s ${CHROOT}/etc/yulerc /etc/yulerc"
ln -s -f ${CHROOT}/etc/yulerc /etc/yulerc
echo
#
# Create passwd file
#
echo " Create passwd file"
echo " grep root /etc/passwd > ${CHROOT}/etc/passwd"
echo " grep daemon /etc/passwd >> ${CHROOT}/etc/passwd"
echo " grep yule /etc/passwd >> ${CHROOT}/etc/passwd"
grep root /etc/passwd > ${CHROOT}/etc/passwd
grep daemon /etc/passwd >> ${CHROOT}/etc/passwd
grep yule /etc/passwd >> ${CHROOT}/etc/passwd
echo
#
# Create group file
#
echo " Create group file"
echo " grep root /etc/group > ${CHROOT}/etc/group"
echo " grep daemon /etc/group >> ${CHROOT}/etc/group"
echo " grep yule /etc/group >> ${CHROOT}/etc/group"
grep root /etc/group > ${CHROOT}/etc/group
grep daemon /etc/group >> ${CHROOT}/etc/group
grep yule /etc/group >> ${CHROOT}/etc/group
echo
#
# Create devices
#
echo " Create devices"
echo " mkdir ${CHROOT}/dev"
echo " mknod -m 444 ${CHROOT}/dev/urandom c 1 9"
echo " mknod -m 666 ${CHROOT}/dev/random c 1 8"
echo " mknod -m 666 ${CHROOT}/dev/null c 1 3"
echo " mknod -m 666 ${CHROOT}/dev/null c 1 5"
mkdir ${CHROOT}/dev
mknod -m 444 ${CHROOT}/dev/urandom c 1 9
mknod -m 666 ${CHROOT}/dev/random c 1 8
mknod -m 666 ${CHROOT}/dev/null c 1 3
mknod -m 666 ${CHROOT}/dev/zero c 1 5
echo
#
# DNS
#
echo " Copy files for DNS"
echo " cp -p /etc/nsswitch.conf ${CHROOT}/etc/"
echo " cp -p /etc/hosts ${CHROOT}/etc/"
echo " cp -p /etc/host.conf ${CHROOT}/etc/"
echo " cp -p /etc/resolv.conf ${CHROOT}/etc/"
echo " cp -p /etc/services ${CHROOT}/etc/"
echo " cp -p /etc/protocols ${CHROOT}/etc/"
cp -p /etc/nsswitch.conf ${CHROOT}/etc/
cp -p /etc/hosts ${CHROOT}/etc/
cp -p /etc/host.conf ${CHROOT}/etc/
cp -p /etc/resolv.conf ${CHROOT}/etc/
cp -p /etc/services ${CHROOT}/etc/
cp -p /etc/protocols ${CHROOT}/etc/
echo "----------------------------------------------------"
echo
echo " You may want to review ${CHROOT}/etc/passwd"
echo " to replace passwords with a *, and to fix the"
echo " path to the home directory of the yule user."
echo
echo " If using a signed configuration file, you need"
echo " a working copy of GnuPG inside the chroot jail."
echo
echo "----------------------------------------------------"
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