#! /bin/sh -e

# Chroot preparation:
#   locale-gen en_GB.UTF-8
#   apt-get --no-install-recommends install keychain xauth x11-xserver-utils
#   adduser --disabled-password cjwatson
#   addgroup --system admin
#   adduser cjwatson admin
#   visudo # add '%admin ALL=NOPASSWD: ALL'

if [ -e "$1/proc/cmdline" ]; then exit; fi

ensure_dir_mine () {
	sudo mkdir -p "$1"
	sudo chown cjwatson:cjwatson "$1"
}

sudo mount --bind /proc "$1/proc"
sudo mount --bind /sys "$1/sys"
sudo mount --bind /dev "$1/dev"
sudo mount --bind /dev/pts "$1/dev/pts"
mkdir -p "$1/tmp/.X11-unix" "$1/tmp/.ICE-unix"
sudo mount --bind /tmp/.X11-unix "$1/tmp/.X11-unix"
sudo mount --bind /tmp/.ICE-unix "$1/tmp/.ICE-unix"
if [ "$SSH_AUTH_SOCK" ]; then
	ensure_dir_mine "$1$(dirname "$SSH_AUTH_SOCK")"
	sudo mount --bind "$(dirname "$SSH_AUTH_SOCK")" "$1$(dirname "$SSH_AUTH_SOCK")"
fi
if [ -d /home/cjwatson/.ssh/control ]; then
	ensure_dir_mine "$1/home/cjwatson/.ssh"
	ensure_dir_mine "$1/home/cjwatson/.ssh/control"
	sudo mount --bind /home/cjwatson/.ssh/control "$1/home/cjwatson/.ssh/control"
fi
if [ "$GPG_AGENT_INFO" ]; then
	ensure_dir_mine "$1$(dirname "$GPG_AGENT_INFO")"
	sudo mount --bind "$(dirname "$GPG_AGENT_INFO")" "$1$(dirname "$GPG_AGENT_INFO")"
fi
if [ -d /home/cjwatson/.keychain ]; then
	ensure_dir_mine "$1/home/cjwatson/.keychain"
	sudo mount --bind /home/cjwatson/.keychain "$1/home/cjwatson/.keychain"
fi
xauth list | sudo chroot "$1" su cjwatson -c 'xargs -l1 xauth add' || true
rm -f "$1/home/cjwatson/.ICEauthority"
iceauth list | sudo chroot "$1" su cjwatson -c 'xargs -l1 iceauth add'
sudo cp -a /etc/resolv.conf "$1/etc/"
if [ -d /home/cjwatson/src ]; then
	ensure_dir_mine "$1/home/cjwatson/src"
	sudo mount --bind /home/cjwatson/src "$1/home/cjwatson/src"
fi