set_shared_user_password.sh

#!/bin/bash

# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Script to set the password for the shared user account.  Stores the
# MD5crypt'd password to a file, for use by customize_rootfs.sh.

# --- BEGIN COMMON.SH BOILERPLATE ---
# Load common CrOS utilities.  Inside the chroot this file is installed in
# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
# location.
find_common_sh() {
  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
  local path

  SCRIPT_ROOT=
  for path in "${common_paths[@]}"; do
    if [ -r "${path}/common.sh" ]; then
      SCRIPT_ROOT=${path}
      break
    fi
  done
}

find_common_sh
. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
# --- END COMMON.SH BOILERPLATE ---

# Script must be run inside the chroot
restart_in_chroot_if_needed "$@"

FLAGS_HELP="USAGE: $0 [flags]"

# TODO(petkov): This flag and setting of src/scripts/shared_user_passwd.txt can
# go away once the transition dust settles.
DEFINE_boolean move_to_etc ${FLAGS_FALSE} \
  "Move src/scripts/shared_user_passwd.txt to /etc."

# Parse command line
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"

# Die on any errors.
set -e

CRYPTED_PASSWD_FILE="${SCRIPTS_DIR}/shared_user_passwd.txt"
SHARED_USER_PASSWD_FILE="/etc/shared_user_passwd.txt"

if [ ${FLAGS_move_to_etc} -eq ${FLAGS_TRUE} ]; then
  if [ -r "${CRYPTED_PASSWD_FILE}" ]; then
    cat "${CRYPTED_PASSWD_FILE}" | sudo_clobber "${SHARED_USER_PASSWD_FILE}"
    echo "Copied ${CRYPTED_PASSWD_FILE} to ${SHARED_USER_PASSWD_FILE}."
  fi
  exit 0
fi

# Get password
read -p "Enter password for shared user account: " PASSWORD

CRYPTED_PASSWD="$(echo "$PASSWORD" | openssl passwd -1 -stdin)"
PASSWORD="gone now"

echo "${CRYPTED_PASSWD}" > "${CRYPTED_PASSWD_FILE}"
echo "${CRYPTED_PASSWD}" | sudo_clobber "${SHARED_USER_PASSWD_FILE}"
echo "Password set in ${CRYPTED_PASSWD_FILE} and ${SHARED_USER_PASSWD_FILE}"