#!/bin/bash

set -e
set -o xtrace

# CONTEXT: HOST prior to IMAGE BUILD as SCRIPT USER
# PURPOSE: creates the SSH key on the host if it doesn't exist.  Then this copies the keys over to a staging area where
# they will be duplicated in the guest VM.
# This process allows the host to log into the guest but more importantly the guest phones home to get the trove
# source

source $_LIB/die

[ -n "$TMP_HOOKS_PATH" ] || die "Temp hook path not set"

[ -n "${HOST_USERNAME}" ] || die "HOST_USERNAME needs to be set to the user for the current user on the host"

if [ `whoami` = "root" ]; then
    die "This should not be run as root"
fi

# copy files over the "staging" area for the guest image (they'll later be put in the correct location by the guest user
# not these keys should not be overridden otherwise a) you won't be able to ssh in and b) the guest won't be able to
# rsync the files
if [ -e ${SSH_DIR}/authorized_keys ]; then
   sudo -Hiu ${HOST_USERNAME} dd if=${SSH_DIR}/authorized_keys of=${TMP_HOOKS_PATH}/ssh-authorized-keys
   sudo -Hiu ${HOST_USERNAME} dd if=${SSH_DIR}/id_rsa of=${TMP_HOOKS_PATH}/id_rsa
   sudo -Hiu ${HOST_USERNAME} dd if=${SSH_DIR}/id_rsa.pub of=${TMP_HOOKS_PATH}/id_rsa.pub
else
    die "SSH Authorized Keys file must exist along with pub and private key"
fi