#!/bin/bash
set -e

[[ -z $1 ]] && echo "usage: ${0##*/} <mount point>" && exit 1
target=$1

[[ ! -f slackstart.conf ]] && echo slackstart.conf missing && exit 1
echo -n sourcing slackstart.conf ...
. ./slackstart.conf && echo done

[[ -z $host ]] && echo define host && exit 1
[[ -z $cidr ]] && echo define cidr && exit 1
[[ -z $gw ]]   && echo define gw && exit 1
[[ -z $dns ]]  && echo define dns && exit 1

[[ -n $pubkeyfile ]]    && echo notice pubkeyfile is defined
[[ -n $pubkeys ]]       && echo notice pubkeys is defined
[[ -n $search_domain ]] && echo notice search_domain is defined

[[ ! -d $target/etc/rc.d/ ]] && echo $target/etc/rc.d/ not found && exit 1
[[ ! -d $target/root/ ]]     && echo $target/root/ not found && exit 1

# network-scripts package may not be installed
# but if it is, just remove the defaults
[[ -f $target/etc/rc.d/rc.inet1 ]]      && rm -f $target/etc/rc.d/rc.inet1
[[ -f $target/etc/rc.d/rc.inet1.conf ]] && rm -f $target/etc/rc.d/rc.inet1.conf
[[ -f $target/etc/rc.d/rc.inet2 ]]      && rm -f $target/etc/rc.d/rc.inet2

echo -n rc.inet1 network setup ...
cat > $target/etc/rc.d/rc.inet1 <<EOF && echo done
#!/bin/bash

[[ $1 = stop ]] && exit 0
echo rc.inet1 PATH is \$PATH

echo -n lo ...
ifconfig lo up && echo done

echo -n eth0 ...
ifconfig eth0 $cidr up && echo done

echo -n default route ...
route add default gw $gw && echo done
EOF
chmod +x $target/etc/rc.d/rc.inet1

echo -n rc.inet2 network setup ...
cat > $target/etc/rc.d/rc.inet2 <<EOF && echo done
#!/bin/bash

echo rc.inet2 PATH is \$PATH

# self-verbose
/etc/rc.d/rc.sshd start
EOF
chmod +x $target/etc/rc.d/rc.inet2

echo -n hostname $host ...
echo $host > $target/etc/HOSTNAME && echo done

[[ ! -f $target/etc/hosts.dist ]] && mv -i $target/etc/hosts $target/etc/hosts.dist
echo -n static name resolution ...
cat > $target/etc/hosts <<EOF && echo done
127.0.0.1       localhost
::1             localhost
${cidr%/*}	$host
EOF

echo -n dynamic name resolution ...
rm -f $target/etc/resolv.conf
for dns_ip in $dns; do
	echo nameserver $dns_ip >> $target/etc/resolv.conf && echo done
done; unset dns_ip
[[ -n $search_domain ]] && echo search $search_domain | tee -a $target/etc/resolv.conf

rm -f $target/root/.ssh/authorized_keys

if [[ -n $pubkeyfile ]]; then
	[[ ! -f $pubkeyfile ]] && echo cannot find pub key file $pubkeyfile && exit 1

	echo -n pushing defined pub key file $pubkeyfile ...
	mkdir -p $target/root/.ssh/
	cat $pubkeyfile >> $target/root/.ssh/authorized_keys && echo done
	chmod 700 $target/root/.ssh/
	chmod 600 $target/root/.ssh/authorized_keys
fi

if [[ -n $pubkeys ]]; then
	echo -n pushing defined pub keys ...
	mkdir -p $target/root/.ssh/
	echo "$pubkeys" >> $target/root/.ssh/authorized_keys && echo done
	chmod 700 $target/root/.ssh/
	chmod 600 $target/root/.ssh/authorized_keys
fi

echo all done