#!/bin/sh

##
# Wilfredo Sanchez <wsanchez@wsanchez.net>
#
# Set up a backup server.
##

. "$(dirname "$0")/common.sh";

##
# Do The Right Thing
##

#
# Required directories
#

for directory in   \
  "${backup_root}" \
  "${backup_home}" \
; do
  if [ ! -d "${directory}" ]; then
    echo "Creating directory: ${directory}";
    install -d -m 755 "${directory}";
  fi;
done;

#
# Ensure SSH skeleton config is OK
#

for directory in      \
  "${backup_home}"    \
  "${ssh_config_dir}" \
; do
  sudo install -d -o root -m 755 "${directory}";
done;
if [ ! -f "${authorized_keys_file}" ]; then
  sudo install -m 644 /dev/null "${authorized_keys_file}";
else
  chown root "${authorized_keys_file}";
  chmod 644 "${authorized_keys_file}";
fi;

#
# Verify that backup user's home directory is where we expect it to be.
#
if ! backup_home="$(eval "cd ~"${backup_user}" 2>/dev/null && pwd -P")" || [ "${wd}/home" != "${backup_home}" ]; then
  error "This backup system requires a \"${backup_user}\" user with a home directory at \"${wd}/home\".";
  if [ -n "${backup_home:-}" ]; then
    error "Incorrect home directory: ${backup_home}";
  else
    error "No \"${backup_user}\" user found.";
  fi;
  exit 1;
fi;

#
# Verify that any configured clients are set up correctly.
#
for client in $(list_clients); do
  # SSH keys
  if [ ! -f "$(ssh_client_private_key_file "${client}")" ]; then
    error "WARNING: Missing SSH private key file for client: ${client}";
  fi;
  if [ ! -f "$(ssh_client_public_key_file "${client}")" ]; then
    error "WARNING: Missing SSH public key file for client: ${client}";
  fi;
  if [ ! -d "$(client_backup_root "${client}")" ]; then
    error "WARNING: Missing backup root for client: ${client}";
  fi;
done;