#!/bin/bash

# create a new minimal fedora install
# suitable for use on a router box.

# Where we are building the system
# Warning: everything under this directory will
# be removed.
BUILDDIR=/extra_disk/wansys

# Where the complete collection of Fedora Core 1
# RPMs resides.
# Copy these from the Fedora Core 1 install CDs.
FEDORADIR=/extra_disk/fedora-rpms

# Some setup parameters
HOSTNAME=wan-router
GATEWAY=192.168.1.1
IPADDR=192.168.1.2
NAMESERVER1=192.168.1.1
NAMESERVER2=192.168.2.1
DOMAIN=some-company.com

# Initialize rpm db
rpm --root $BUILDDIR --dbpath /var/lib/rpm \
  --initdb || exit 1

# The rpm directory has to be available under the
# build directory.
ln -s $FEDORADIR $BUILDDIR || exit 1

# Need  /etc/fstab for some of the rpm installs.
mkdir $BUILDDIR/etc
cat >>$BUILDDIR/etc/fstab <<EOF
LABEL=/                 /                      \
ext3    noatime,commit=60  1 1
none                    /dev/pts               \
devpts  gid=5,mode=620  0 0
none                    /proc                  \
proc    defaults        0 0
none                    /dev/shm               \
tmpfs   defaults        0 0
/tmp                    /tmp                   \
tmpfs   defaults        0 0
/var/impermanent        /var/impermanent       \
tmpfs   defaults        0 0
EOF

# Need a /dev/null for some of the early
# rpm installs
mkdir $BUILDDIR/dev || exit 1
mknod -m 444 $BUILDDIR/dev/null c 1 3 || exit 1

# Similarly, we need /proc.
mkdir ${BUILDDIR}/proc
mount --bind /proc ${BUILDDIR}/proc

cd $FEDORADIR || exit 1
# Install base packages depended on by
# everything else.
rpm --root $BUILDDIR/ --excludedocs --dbpath \
/var/lib/rpm --replacepkgs -i \
rpmdb-fedora-1-0.20031103.i386.rpm \
bash-2.05b-31.i386.rpm \
glibc-2.3.2-101.i686.rpm \
mktemp-1.5.1-1.i386.rpm \
glibc-common-2.3.2-101.i386.rpm \
basesystem-8.0-2.noarch.rpm \
libgcc-3.3.2-1.i386.rpm \
libtermcap-2.0.8-36.i386.rpm \
tzdata-2003d-1.noarch.rpm \
setup-2.5.27-1.1.noarch.rpm \
filesystem-2.2.1-5.i386.rpm \
termcap-11.0.1-17.noarch.rpm || exit 1

# Install from our list of packages.
cat >/tmp/pkglist.$$ <<EOF
glibc-common-2.3.2-101.i386.rpm
filesystem-2.2.1-5.i386.rpm
libgcc-3.3.2-1.i386.rpm
e2fsprogs-1.34-1.i386.rpm
popt-1.8.1-0.30.i386.rpm
glib2-2.2.3-1.1.i386.rpm
mount-2.11y-29.i386.rpm
...many more rpms, edited for space...
EOF
rpm --root $BUILDDIR --excludedocs --dbpath \
/var/lib/rpm -i --replacepkgs  --aid \
`cat /tmp/pkglist.$$`
rm -f /tmp/pkglist.$$

# Get rid of the fedora rpm database - we don't \
# need it now that we've resolved dependencies \
# during the install.
rpm --root $BUILDDIR --dbpath /var/lib/rpm \
-e rpmdb-fedora

# Nuke some things we won't need, while preserving \
# other files.
cat >/tmp/config-keep.txt.$$ <<EOF
usr/share/locale/en
usr/share/locale/locale.alias
usr/share/terminfo/a/ansi
usr/share/terminfo/l/linux
usr/share/terminfo/v/vt100
usr/share/terminfo/v/vt102
usr/share/terminfo/x/xterm
usr/share/zoneinfo/America
usr/share/zoneinfo/Etc
usr/share/zoneinfo/posix
usr/share/zoneinfo/Universal
usr/share/zoneinfo/UCT
usr/share/zoneinfo/UTC
usr/share/zoneinfo/zone.tab
usr/share/zoneinfo/Zulu
usr/lib/locale/en_US
usr/lib/locale/en_US.utf8
EOF

tar -C $BUILDDIR -T /tmp/config-keep.txt.$$ -z -c \
-f $SAVEDIR/config-keep.tgz
rm -rf $BUILDDIR/usr/share/locale/*
rm -rf $BUILDDIR/usr/lib/locale/*
rm -rf $BUILDDIR/usr/share/terminfo/*
rm -rf $BUILDDIR/usr/share/zoneinfo/*
tar -C $BUILDDIR -z -x -f $SAVEDIR/config-keep.tgz
rm -f /tmp/config-keep.txt.$$

# Rebuild locales
/usr/sbin/chroot $BUILDDIR \
/usr/sbin/build-locale-archive

# Set up networking config files
echo "Configuring networking"
cat >$BUILDDIR/etc/sysconfig/network <<EOF
NETWORKING=yes
HOSTNAME=$HOSTNAME
EOF

cat >\
$BUILDDIR/etc/sysconfig/network-scripts/ifcfg-eth0\
<<EOF
ONBOOT=yes
USERCTL=no
PEERDNS=yes
GATEWAY=$GATEWAY
TYPE=Ethernet
IPADDR=$IPADDR
DEVICE=eth0
BOOTPROTO=none
NETMASK=255.255.255.0
EOF

cat >$BUILDDIR/etc/resolv.conf <<EOF
search $DOMAIN
nameserver $NAMESERVER1
nameserver $NAMESERVER2
EOF

cat >$BUILDDIR/etc/hosts <<EOF
127.0.0.1 localhost localhost.localdomain
$IPADDR $HOSTNAME $HOSTNAME.$DOMAIN.com
EOF

# Enable laptop mode
cat >$BUILDDIR/etc/sysctl.conf <<EOF
vm.laptop_mode = 1
vm.bdflush = 30 500 0 0 60000 60000 60 20 0
EOF

# Clean out some docs and support files that
# aren't properly excluded by
# rpm --excludedocs
rm -rf $BUILDDIR/usr/share/doc/*
rm -rf $BUILDDIR/usr/share/info/*
rm -rf $BUILDDIR/usr/share/vim
rm -rf $BUILDDIR/usr/share/snmp
rm -rf $BUILDDIR/usr/share/i18n
rm -rf $BUILDDIR/usr/lib/gconv/*

# Run kudzu
/usr/sbin/chroot $BUILDDIR kudzu -q
# Now turn off kudzu at boot
/usr/sbin/chroot $BUILDDIR /sbin/chkconfig kudzu off

# Remove link to fedora-rpms dir
rm -f $BUILDDIR/fedora-rpms

# Remove nightly rpm database log builder cron job
rm -f $BUILDDIR/etc/cron.daily/rpm