#!/bin/bash

# Script for building bootable .iso images from downloaded OS X upgrade
# Copyright (C) 2015-2016 Karlson2k (Evgeny Grin)
#
# You can run, copy, modify, publish and do whatever you want with this
# script as long as this message and copyright string above are preserved.
# You are also explicitly allowed to reuse this script under any LGPL or
# GPL license or under any BSD-style license.
#
#
# Latest version:
# https://raw.githubusercontent.com/Karlson2k/k2k-OSX-Tools/master/Create_osx_install_iso/create_osx_install_iso.sh
#
# Version 1.0.5

readonly script_org_name='create_osx_install_iso.sh' || exit 127
unset work_dir script_name tmp_dir OSX_inst_name OSX_inst_inst_dmg_mnt \
OSX_inst_img_rw_mnt OSX_inst_img_rw_dev || exit 127
work_dir="$PWD"
save_IFS="$IFS" || exit 127
export LANG='en_US.UTF-8' || exit 127 # prevent localization of output, not really required

[[ `ps -o comm -p $$ | tail -n1 2>/dev/null` =~ bash$ ]] || {
echo "Script is designed to be run only with bash"
exit 127
}
[[ "$(uname -s)" == Darwin ]] || {
echo "Script can be run only on Mac OS X"
exit 127
}

cleanup() {
trap - SIGHUP SIGTERM SIGQUIT SIGINT SIGSTOP SIGTSTP EXIT
if [[ -n $tmp_dir ]] && [[ -e "$tmp_dir" ]]; then
  if [[ -e "$OSX_inst_img_rw_dev" ]]; then
  echo "Unmounting writable image..."
  hdiutil detach "$OSX_inst_img_rw_dev" -force
  fi
  if [[ -e "$OSX_inst_img_rw_mnt" ]]; then
  echo "Unmounting writable image..."
  hdiutil detach "$OSX_inst_img_rw_mnt" -force
  fi
  if [[ -e "$OSX_inst_inst_dmg_mnt" ]]; then
  echo "Unmounting temporary mounted source image..."
  hdiutil detach "$OSX_inst_inst_dmg_mnt" -force
  fi
  echo "Removing temporary files..."
  rm -fdR "$tmp_dir"
fi
}

trap '{ exit_code="$?"; cleanup; exit $exit_code; }' EXIT

echo_term_ansi_m() {
local n_param=''
if [[ "$1" == "-n" ]]; then
  n_param="$1"
  shift
elif [[ -z "$1" ]]; then shift
fi
local m_code="$1"
shift
if [[ -t 1 ]]; then
  echo $n_param $'\e['"${m_code}m$@"$'\e[0m'
else
  echo $n_param "$@"
fi
}

echo_neutral() {
echo "$@"
}

echo_enh() {
echo_term_ansi_m '1;97' "$@"
}

echo_enh_n() {
echo_term_ansi_m -n '1;97' "$@"
}

echo_positive() {
echo_term_ansi_m '1;92' "$@"
}

echo_positive_n() {
echo_term_ansi_m -n '1;92' "$@"
}

echo_warning() {
echo_term_ansi_m '1;93' "$@"
}

echo_warning_n() {
echo_term_ansi_m -n '1;93' "$@"
}

echo_error() {
echo_term_ansi_m '1;91' "$@" 1>&2
}
echo_error_n() {
echo_term_ansi_m -n '1;91' "$@" 1>&2
}

exit_with_error() {
trap - SIGHUP SIGTERM SIGQUIT SIGINT SIGSTOP SIGTSTP EXIT
if [[ -n $1 ]]; then
  echo_error "Error: $1"
else
  echo_error "Error."
fi
cleanup
  [[ $2 > 0 ]] && exit $2
  exit 1
}

trap '{ exit_with_error "unexpected interrupt at line $LINENO"; exit 255; }' SIGHUP SIGTERM SIGQUIT SIGINT SIGSTOP SIGTSTP

# trap 'echo "Line number: $LINENO"; read -p "\"Enter\" to continue" ' DEBUG

stage_start() {
echo_enh_n "$@... "
}

stage_start_nl() {
stage_start "$@"
echo ''
}

stage_end_ok() {
if [[ -z "$@" ]]; then
  echo_positive "OK"
else
  echo_positive "$@"
fi
}

stage_end_warn() {
if [[ -z "$@" ]]; then
  echo_warning "OK, but with warnings"
else
  echo_warning "$@"
fi
}

is_answer_valid() {
local answ="$1"
shift
while [[ -n $1 ]]; do
  [[ "$answ" == "$1" ]] && return 0
  shift
done
return 1
}

script_name="$(basename "${BASH_SOURCE[0]}" 2>/dev/null)"
[[ -n "$script_name" ]] || script_name="${0##*/}" # fallback
[[ -n "$script_name" ]] || script_name="${script_org_name}" # second fallback

script_version="$(sed -n -e '\|^# Version| {s|^# Version \(.*$\)|\1|p; q;}' "${BASH_SOURCE[0]}" 2>/dev/null)" || unset script_version
[[ -n "$script_version" ]] || script_version="Unknown"

print_help() {
echo "\
Script for creating .iso images from downloaded OS X upgrade application.
Usage:"
echo_enh_n " $script_name"; echo " [options]

Valid options are:
  -a, --app[lication] <OS X Install app>
  Path and name of OS X upgrade application.
  Path can be omitted if application is located at
  default path.
  -i, --iso <path with name for .iso>
  Path with optional name for output .iso
  -m, --method <D>
  Use method number D to create installation image:
  Method 1 create image that most close to Apple's image,
  but potentially less compatible with some BIOSes/EFI.
  Method 2 create more BIOS/EFI-friendly images, but
  require more disk space for conversion.
  Method 3 can produce bootable images without super
  user rights.
  -n, --nosudo
  Do not use sudo command
  -v, --verify
  Do not skip verifications (slow down image creation)
  -h, --help Print this message and exit
  -V, --version
  Print version information and exit"

}

print_version() {
echo "${script_org_name} version $script_version"
}

exit_with_cmd_err() {
echo_error "$@"
print_help 1>&2
exit 32
}

unset cmd_par_app cmd_par_iso test_name ver_opt cr_method || exit_with_error "Can't unset variable"
allow_sudo='yes' && ver_opt='--noverify' || exit_with_error "Can't set variable"
while [[ -n "$1" ]]; do
case "$1" in
  -a | --app | --application ) cmd_par_app="$2"
  [[ -n "$cmd_par_app" ]] && [[ "$cmd_par_app" != "--iso" ]] || exit_with_cmd_err "No Application name given for $1"
  shift 2 ;;
  -i | --iso ) cmd_par_iso="$2"
  [[ -n "$cmd_par_iso" ]] && [[ "$cmd_par_iso" != "--app" ]] || exit_with_cmd_err "No .iso name given for $1"
  shift 2 ;;
  -m | --method ) [[ -z "$2" ]] && exit_with_cmd_err "Method not specified for $1"
  cr_method="method${2}"
  shift 2 ;;
  -m* ) cr_method="method${1#-m}"; shift ;;
  --method* ) cr_method="method${1#--method}"; shift ;;
  -n | --nosudo ) allow_sudo='no'; shift ;;
  -v | --verify ) unset ver_opt; shift ;;
  -h | --h | --help ) print_help; exit 0 ;;
  -V | --version ) print_version; exit 0 ;;
  *) exit_with_cmd_err "Unknown option \"$1\""
esac
done

[[ "${cr_method-notset}" == "notset" ]] || [[ "$cr_method" =~ ^"method"[1-3]$ ]] || exit_with_cmd_err "Unknown creation method specified: ${cr_method#method}"

check_intall_app() {
[[ -n "$1" ]] || return 3
[[ -d "$1" ]] || return 2
[[ -e "$1/Contents/SharedSupport/InstallESD.dmg" ]] || return 1
return 0
}

if [[ -z "$cmd_par_app" ]]; then
stage_start "Looking for downloaded OS upgrades"
unset test_name || exit_with_error
IFS=$'\n'
dirlist=(`ls -1d "/Applications/Install OS X "*".app/" | sed -n -e 's|^\(/Applications/Install OS X .*\.app\)/$|\1|p' `) || exit_with_error "Can't find downloaded OS X upgrade"
IFS="$save_IFS"
[[ ${#dirlist[@]} -eq 0 ]] && exit_with_error "Can't find downloaded OS X upgrade"
stage_end_ok "found"
if [[ ${#dirlist[@]} -gt 1 ]]; then
  echo "Several OS upgrades were found."
  echo "Which one OS upgrade do you want to use?"
  valid_answers=()
  unset test_name || exit_with_error
  for ((i=0;i<${#dirlist[@]};i++)); do
  test_name="${dirlist[$i]#/Applications/Install }"
  echo "$((i+1))) ${test_name%.app}"
  valid_answers[$i]="$((i+1))"
  done
  read -n 1 -p "[1-$i, q for quit]: " answer
  echo ''
  until is_answer_valid $answer ${valid_answers[@]} 'q'; do
  echo "'$answer' is incorrect response"
  read -n 1 -p "Select ""$(seq -s ', ' -t '\b\b' 1 $i)"" or q for quit: " answer
  echo ''
  done
  [[ "$answer" == "q" ]] && { echo_warning "Aborted."; exit 2; }
  OSX_inst_app="${dirlist[$((answer-1))]}"
else
  OSX_inst_app="${dirlist[0]}"
fi
echo_enh "Using \"$OSX_inst_app\"."
else
stage_start "Checking for specified OS upgrade"
unset OSX_inst_app || exit_with_error
if check_intall_app "${cmd_par_app%/}"; then
  # direct location with path
  if [[ "${cmd_par_app:0:1}" == "/" ]]; then
  OSX_inst_app="${cmd_par_app%/}" # absolute path
  else
  OSX_inst_app="$(pwd)/${cmd_par_app%/}" # relative path
  test_name="$(cd "$OSX_inst_app/" 2>/dev/null && pwd)" || unset test_name || exit_with_error
  [[ -n "$test_name" ]] && OSX_inst_app="$test_name" # use absolute path if possible
  fi
elif [[ "${cmd_par_app%%/*}" == "${cmd_par_app%/}" ]]; then
  # check /Applications
  test_name="${cmd_par_app%/}"
  test_name="${test_name%.app}.app"
  if check_intall_app "/Applications/${test_name}"; then
  OSX_inst_app="/Applications/${test_name}"
  elif check_intall_app "/Applications/Install ${test_name}"; then
  OSX_inst_app="/Applications/Install ${test_name}"
  elif check_intall_app "/Applications/Install OS X ${test_name}"; then
  OSX_inst_app="/Applications/Install OS X ${test_name}"
  fi
fi
[[ -n "$OSX_inst_app" ]] || exit_with_error "\"$cmd_par_app\" is not valid OS X Install application"
stage_end_ok "found"
echo_enh "Using \"$OSX_inst_app\"."
fi

stage_start "Detecting OS X name for installation"
unset test_name OSX_inst_prt_name || exit_with_error
test_name=$(sed -n -e '\|<key>CFBundleDisplayName</key>| { N; s|^.*<string>\(.\{1,\}\)</string>.*$|\1|p; q; }' \
  "$OSX_inst_app/Contents/Info.plist" 2>/dev/null) || unset test_name
if [[ -n "$test_name" ]]; then
OSX_inst_name="${test_name#Install }"
OSX_inst_prt_name="Install $OSX_inst_name"
stage_end_ok "$OSX_inst_name"
else
OSX_inst_name=$(echo "$OSX_inst_app"|sed -n -e's|^.*Install \(OS X .\{1,\}\)\.app.*$|\1|p' 2>/dev/null) || unset OSX_inst_name || exit_with_error
[[ -z "$OSX_inst_name" ]] && OSX_inst_name="OS X"
OSX_inst_prt_name="Install $OSX_inst_name"
stage_end_warn "guessed \"$OSX_inst_name\""
fi

stage_start "Creating temporary directory"
tmp_dir="$(mktemp -d -t osx_iso_tmpdir)" || exit_with_error "Can't create tmp directory"
# mkdir "tmp-tmp"
# tmp_dir=$(cd tmp-tmp && pwd) || exit_with_error "Can't create tmp directory"
stage_end_ok "succeed"

stage_start_nl "Mounting InstallESD.dmg"
OSX_inst_inst_dmg="$OSX_inst_app"'/Contents/SharedSupport/InstallESD.dmg'
OSX_inst_inst_dmg_mnt="$tmp_dir/InstallESD_dmg_mnt"
hdiutil attach "$OSX_inst_inst_dmg" -kernel -readonly -nobrowse ${ver_opt+-noverify} -mountpoint "$OSX_inst_inst_dmg_mnt" || exit_with_error "Can't mount installation image"
OSX_inst_base_dmg="$OSX_inst_inst_dmg_mnt/BaseSystem.dmg" || exit_with_error
stage_end_ok "Mounting succeed"

stage_start "Calculating required image size"
unset OSX_inst_inst_dmg_used_size OSX_inst_base_dmg_real_size OSX_inst_base_dmg_size || exit_with_error "Can't unset variables"
OSX_inst_inst_dmg_used_size=$(hdiutil imageinfo "$OSX_inst_inst_dmg" -plist | \
sed -En -e '\|<key>Total Non-Empty Bytes</key>| { N; s|^.*<integer>(.+)</integer>.*$|\1|p; q; }') || unset OSX_inst_inst_dmg_used_size
OSX_inst_base_dmg_real_size=$(hdiutil imageinfo "$OSX_inst_base_dmg" -plist | \
sed -En -e '\|<key>Total Bytes</key>| { N; s|^.*<integer>(.+)</integer>.*$|\1|p; q; }') || unset OSX_inst_base_dmg_real_size
OSX_inst_base_dmg_size=$(stat -f %z "$OSX_inst_base_dmg") || unset OSX_inst_base_dmg_size
((OSX_inst_base_dmg_size=(OSX_inst_base_dmg_size/512)*512)) # round to sector bound
if !((OSX_inst_inst_dmg_used_size)) || !((OSX_inst_base_dmg_real_size)) || !((OSX_inst_base_dmg_size)); then
((OSX_inst_img_rw_size=10*1024*1024*1024))
stage_end_warn "Can't calculate, will use $OSX_inst_img_rw_size ($((OSX_inst_img_rw_size/(1024*1024))) MiB)"
else
((OSX_inst_img_rw_size=OSX_inst_base_dmg_real_size+(OSX_inst_inst_dmg_used_size-OSX_inst_base_dmg_size) ))
((OSX_inst_img_rw_size+=OSX_inst_img_rw_size/10)) # add 10% for overhead, no need to be precise
((OSX_inst_img_rw_size=(OSX_inst_img_rw_size/512 + 1)*512)) # round to sector bound
stage_end_ok "$OSX_inst_img_rw_size ($((OSX_inst_img_rw_size/(1024*1024))) MiB)"
fi

stage_start "Checking for available disk space"
unset tmp_dir_free_space || exit_with_error
tmp_dir_free_space="$(df -bi "$tmp_dir" | \
sed -nE -e 's|^.+[[:space:]]+[0-9]+[[:space:]]+[0-9]+[[:space:]]+([0-9]+)[[:space:]]+[0-9]{1,3}%[[:space:]]+[0-9]+[[:space:]]+[0-9]+[[:space:]]+[0-9]{1,3}%[[:space:]]+/.*$|\1|p' )" || unset tmp_dir_free_space
if [[ "${tmp_dir_free_space-notset}" == "notset" ]] || ( [[ -n "$tmp_dir_free_space" ]] && !((tmp_dir_free_space)) ); then
tmp_dir_free_space='0'
stage_end_warn "Can't determinate"
else
((tmp_dir_free_space*=512))
if ((tmp_dir_free_space < OSX_inst_img_rw_size)); then
  stage_end_warn "$tmp_dir_free_space ($((tmp_dir_free_space/(1024*1024))) MiB), image creation may fail"
else
  stage_end_ok "$tmp_dir_free_space ($((tmp_dir_free_space/(1024*1024))) MiB)"
fi
fi

stage_start "Checking for super user rights"
unset have_su_rights use_sudo sudo_prf || exit_with_error "Can't unset variables"
if [[ `id -u` != '0' ]]; then
have_su_rights='no'
else
have_su_rights='yes'
fi
if [[ "$have_su_rights" == "yes" ]] || [[ "$allow_sudo" != "yes" ]]; then
use_sudo='no'
sudo_prf=''
else
use_sudo='yes'
sudo_prf='sudo'
fi
if [[ "$have_su_rights" == "yes" ]]; then
stage_end_ok 'Owned'
else
stage_end_warn "Not owned"
fi

stage_start "Choosing creation method"
if [[ -n "$cr_method" ]]; then
stage_end_ok "Method ${cr_method#method}, specified on command line"
if [[ "$cr_method" != "method3" ]] && [[ "$have_su_rights" != "yes" ]] && [[ "$allow_sudo" != "yes" ]]; then
  echo_warning "Resulting image probably will be unbootable as method ${cr_method#method} require super user rights and sudo was disabled by command line"
fi
elif [[ "$have_su_rights" != 'yes' ]]; then
cr_method="method3"
stage_end_ok "Method 3 as safest without super user right"
elif ((tmp_dir_free_space < OSX_inst_img_rw_size*3)); then
cr_method="method1"
stage_end_ok "Method 1 due to limited disk space"
else
cr_method="method2"
stage_end_ok "Method 2"
fi

unset img_bootable || exit_with_error
if [[ "$cr_method" == "method1" ]] || [[ "$cr_method" == "method2" ]]; then
if [[ "$cr_method" == "method1" ]]; then
  stage_start_nl "Converting BaseSystem.dmg to writable image"
  OSX_inst_img_rw="$tmp_dir/OS_X_Install.sparsebundle"
  hdiutil convert "$OSX_inst_base_dmg" -format UDSB -o "$OSX_inst_img_rw" -pmap || exit_with_error "Can't convert to writable image"
  stage_end_ok "Converting succeed"
elif [[ "$cr_method" == "method2" ]]; then
  stage_start_nl "Creating installation image from BaseSystem.dmg"
  OSX_inst_img_dmg_tmp="$tmp_dir/OS_X_Install.dmg" || exit_with_error
  hdiutil create "${OSX_inst_img_dmg_tmp}" -srcdevice "$OSX_inst_base_dmg" -layout ISOCD || exit_with_error "Can't create writable image"
  stage_end_ok "Creating succeed"

  stage_start_nl "Converting installation image to writeable format"
  OSX_inst_img_rw="$tmp_dir/OS_X_Install.sparsebundle"
  hdiutil convert "$OSX_inst_img_dmg_tmp" -format UDSB -o "$OSX_inst_img_rw" -pmap || exit_with_error "Can't convert to writable image"
  rm -f "$OSX_inst_img_dmg_tmp"
  stage_end_ok "Converting succeed"
fi

stage_start "Resizing writable image"
hdiutil resize -size "$OSX_inst_img_rw_size" "$OSX_inst_img_rw" -nofinalgap || exit_with_error "Can't resize writable image"
stage_end_ok "Resizing succeed"

stage_start_nl "Mounting writable image"
OSX_inst_img_rw_mnt="$tmp_dir/OS_X_Install_img_rw_mnt"
hdiutil attach "$OSX_inst_img_rw" -readwrite -nobrowse -mountpoint "$OSX_inst_img_rw_mnt" ${ver_opt+-noverify} || exit_with_error "Can't mount writable image"
stage_end_ok "Mounting succeed"
elif [[ "$cr_method" == "method3" ]]; then
stage_start_nl "Creating blank writable image"
OSX_inst_img_rw="$tmp_dir/OS_X_Install.sparsebundle"
OSX_inst_img_rw_tmp_name="$OSX_inst_prt_name" || exit_with_error
hdiutil create -size "$OSX_inst_img_rw_size" "$OSX_inst_img_rw" -type SPARSEBUNDLE -fs HFS+ -layout ISOCD -volname "$OSX_inst_img_rw_tmp_name" || exit_with_error "Can't create writable image"
stage_end_ok "Creating succeed"

stage_start_nl "Mounting writable image"
OSX_inst_img_rw_mnt="$tmp_dir/OS_X_Install_img_rw_mnt"
hdiutil attach "$OSX_inst_img_rw" -readwrite -nobrowse -mountpoint "$OSX_inst_img_rw_mnt" ${ver_opt+-noverify} || exit_with_error "Can't mount writable image"
stage_end_ok "Mounting succeed"

stage_start "Detecting mounted image device node"
OSX_inst_img_rw_dev=`diskutil info -plist "$OSX_inst_img_rw_mnt" | sed -n -e '\|<key>DeviceIdentifier</key>| { N; s|^.*<string>\(.\{1,\}\)</string>.*$|/dev/\1|p; q; }'` && \
  [[ -n "$OSX_inst_img_rw_dev" ]] || exit_with_error "Can't find device node"
stage_end_ok "$OSX_inst_img_rw_dev"

stage_start_nl "Restoring BaseSystem.dmg to writable image"
asr restore --source "$OSX_inst_base_dmg" --target "$OSX_inst_img_rw_dev" --erase --noprompt $ver_opt --buffers 1 --buffersize 64m || exit_with_error "Can't restore BaseSystem.dmg to writable image"
unset OSX_inst_img_rw_mnt || exit_with_error # OSX_inst_img_rw_mnt is no valid anymore as image was remounted to different mountpoint
img_bootable='yes'
stage_end_ok "Restoring succeed"

stage_start "Detecting re-mounted image volume name"
unset OSX_inst_img_rw_volname || exit_with_error
OSX_inst_img_rw_volname=`diskutil info -plist "$OSX_inst_img_rw_dev" | sed -n -e '\|<key>VolumeName</key>| { N; s|^.*<string>\(.\{1,\}\)</string>.*$|\1|p; q; }'` || unset OSX_inst_img_rw_folname
if [[ -z "$OSX_inst_img_rw_volname" ]]; then
  stage_end_warn "can't detect"
else
  osascript -e "Tell application \"Finder\" to close the window \"$OSX_inst_img_rw_volname\"" &>/dev/null
  stage_end_ok "$OSX_inst_img_rw_volname"
fi

stage_start_nl "Remounting writable image to predefined mointpoint"
hdiutil detach "$OSX_inst_img_rw_dev" -force || exit_with_error "Can't unmount image"
unset OSX_inst_img_rw_dev
OSX_inst_img_rw_mnt="$tmp_dir/OS_X_Install_img_rw_mnt"
hdiutil attach "$OSX_inst_img_rw" -readwrite -nobrowse -mountpoint "$OSX_inst_img_rw_mnt" ${ver_opt+-noverify} || exit_with_error "Can't mount writable image"
stage_end_ok "Remounting succeed"
else
exit_with_error "Unknown creation method"
fi

stage_start "Detecting OS X version on image"
unset OSX_inst_ver || exit_with_error "Can't unset variable"
OSX_inst_img_rw_ver_file="$OSX_inst_img_rw_mnt/System/Library/CoreServices/SystemVersion.plist" || exit_with_error "Can't set variable"
OSX_inst_ver=`sed -n -e '\|<key>ProductUserVisibleVersion</key>| { N; s|^.*<string>\(.\{1,\}\)</string>.*$|\1|p; q; }' "$OSX_inst_img_rw_ver_file"` || unset OSX_inst_ver
if [[ -z "$OSX_inst_ver" ]]; then
stage_end_warn "not detected"
else
stage_end_ok "$OSX_inst_ver"
fi

[[ "$OSX_inst_ver" == "10.11" ]] || [[ "$OSX_inst_ver" =~ 10.11.[1-4] ]] || \
echo_warning "Warning! This script is tested only with images of OS X versions 10.11 and 10.11.1-10.11.4. Use with your own risk!"

stage_start_nl "Renaming partition on writeable image"
if ! diskutil rename "$OSX_inst_img_rw_mnt" "$OSX_inst_prt_name"; then
stage_end_warn "Partition was not renamed"
else
unset OSX_inst_img_rw_volname
stage_end_ok "Renamed to \"$OSX_inst_prt_name\""
fi

stage_start "Copying BaseSystem.dmg to writeable image"
#rsync -aIWEh --cache --progress "$OSX_inst_base_dmg" "$OSX_inst_img_rw_mnt/" || exit_with_error "Copying BaseSystem.dmg failed"
cp -p "$OSX_inst_base_dmg" "$OSX_inst_img_rw_mnt/" || exit_with_error "Copying BaseSystem.dmg failed"
cp -p "${OSX_inst_base_dmg%.dmg}.chunklist" "$OSX_inst_img_rw_mnt/" || exit_with_error "Copying BaseSystem.chunklist failed"
stage_end_ok

stage_start "Replacing Packages symlink with real files"
rm -f "$OSX_inst_img_rw_mnt/System/Installation/Packages" || exit_with_error "Deleting Packages symlink failed"
cp -pPR "$OSX_inst_inst_dmg_mnt/Packages" "$OSX_inst_img_rw_mnt/System/Installation/" || exit_with_error "Copying Packages failed"
stage_end_ok

stage_start "Configuring image as bootable"
OSX_inst_img_rw_CoreSrv="$OSX_inst_img_rw_mnt/System/Library/CoreServices" || exit_with_error
if bless --folder "$OSX_inst_img_rw_CoreSrv" \
--file "$OSX_inst_img_rw_CoreSrv/boot.efi" --openfolder "$OSX_inst_img_rw_mnt" --label "Install $OSX_inst_name"; then
stage_end_ok
else
stage_end_warn "Failed, image may not be bootable"
fi

stage_start_nl "Unmounting InstallESD.dmg"
hdiutil detach "$OSX_inst_inst_dmg_mnt" -force || exit_with_error "Can't unmount InstallESD.dmg"
unset OSX_inst_img_rw_dev
stage_end_ok "Unmointing succeed"

stage_start_nl "Unmounting writable images"
hdiutil detach "$OSX_inst_img_rw_mnt" -force || exit_with_error "Can't unmount writable image"
unset OSX_inst_img_rw_dev
stage_end_ok "Unmointing succeed"

insert_version_into_name() {
local name="$1"
local version="$2"
[[ -z "$name" ]] && return 1
[[ -z "$version" ]] && { echo "$name"; return 0; }
local result
local ins_aft
if [[ "$name" =~ (^|[[:space:]])"OS X"($|[[:space:]]) ]]; then
  ins_aft="OS X"
elif [[ "$name" =~ (^|[[:space:]])"MacOS X"($|[[:space:]]) ]]; then
  ins_aft="MacOS X"
fi
if [[ -n "$ins_aft" ]]; then
  result=$(echo -n "$name" | sed -n -e 's|^\(.*[[:<:]]'"$ins_aft"'[[:>:]]\).*$|\1|p') || return 2
  [[ -z "$result" ]] && return 2
  result+=" $version" # allow any regex/special symbols in $version
  result+=$(echo -n "$name" | sed -n -e 's|^.*[[:<:]]'"$ins_aft"'[[:>:]]\(.*\)$|\1|p') || return 2
else
  result="$name (OS X $version)"
fi
[[ -z "$result" ]] && return 1
echo "$result"
return 0
}

stage_start "Checking for output directory and image name"
unset iso_name out_dir test_name || exit_with_error
if [[ -z "$cmd_par_iso" ]]; then
iso_name="$(insert_version_into_name "$OSX_inst_name" "$OSX_inst_ver")" || exit_with_error "Script internal error"
iso_name="Install_${iso_name// /_}.iso"
if [[ -z "$work_dir" ]] || [[ ! -w "$work_dir/" ]]; then
  [[ -n "$HOME" ]] && out_dir="$HOME/Desktop" # use Desktop as fallback
  if [[ -z "$out_dir" ]] || [[ ! -w "$out_dir/" ]]; then
  # use script location directory as fallback
  script_path="$(dirname "${BASH_SOURCE[0]}" 2>/dev/null)"
  [[ -n "$script_path" ]] || script_path="${0%/*}"
  [[ -n "$script_path" ]] && out_dir="$(cd "$script_path"2 2>/dev/null && pwd)"
  fi
  [[ -n "$out_dir" ]] && [[ -w "$out_dir/" ]] || out_dir="${0%/*}"
  [[ -n "$out_dir" ]] && [[ -w "$out_dir/" ]] || exit_with_error "Can't find writable output directory"
  stage_end_warn "Directory \"$work_dir\" seems to be unwritable, \"$out_dir/$iso_name\" will be used for output"
else
  out_dir="$work_dir"
  stage_end_ok "$work_dir/$iso_name"
fi
else
test_name="${cmd_par_iso}"
[[ "${test_name:0:1}" == "/" ]] || test_name="$work_dir/$test_name"
if [[ -d "$test_name" ]] || [[ "${test_name%/}" != "${test_name}" ]]; then
  # cmd_par_iso is output directory without filename
  out_dir="${cmd_par_iso%/}"
else
  iso_name="${cmd_par_iso##*/}"
  if [[ "$iso_name" == "$cmd_par_iso" ]]; then
  out_dir="$work_dir"
  else
  out_dir="${cmd_par_iso%/*}"
  fi
fi

if [[ -z "$iso_name" ]]; then
  iso_name="$(insert_version_into_name "$OSX_inst_name" "$OSX_inst_ver")" || exit_with_error "Script internal error"
  iso_name="Install_${OSX_inst_name// /_}.iso"
fi
iso_name="${iso_name%.iso}.iso"

[[ "${out_dir:0:1}" == "/" ]] || [[ -z "$out_dir" ]] || out_dir="$work_dir/${out_dir}" # relative path
[[ -d "$out_dir/" ]] || mkdir "$out_dir/" || exit_with_error "Can't create specified output directory."
unset test_name || exit_with_error
test_name="$(cd "$out_dir/" 2>/dev/null && pwd)"
[[ -n "$test_name" ]] && out_dir="$test_name" # replace with absolute path if possible
stage_end_ok "specified on command line: \"$out_dir/$iso_name\""
fi

stage_start_nl "Converting writeable image to .iso"
unset iso_created || exit_with_error
OSX_inst_result_image_ro="$out_dir/$iso_name" || exit_with_error
OSX_inst_result_flag="$tmp_dir/output_image_is_ready" || exit_with_error
rm -f "$OSX_inst_result_flag" || exit_with_error
[[ -e "$OSX_inst_result_image_ro" ]] && exit_with_error "\"$OSX_inst_result_image_ro\" already exist"
makehybrid_errout="$tmp_dir/hdiutil_makehybrid_erroutput" || exit_with_error
{ { hdiutil makehybrid -o "$OSX_inst_result_image_ro" "$OSX_inst_img_rw" -hfs -udf -default-volume-name "$OSX_inst_prt_name" 2>&1 1>&3 && \
touch "$OSX_inst_result_flag"; } | tee "$makehybrid_errout"; } 3>&1 1>&2 # output stderr to stderr and save it to file at the same time
if ! [[ -e "$OSX_inst_result_flag" ]]; then
if fgrep -Fiqs -e 'Operation not permitted' "$makehybrid_errout" && [[ "$have_su_rights" != "yes" ]]; then
  echo_warning "Creation of optimal .iso image failed without super user rights."
  if [[ "$allow_sudo" == "yes" ]]; then
  rm -f "$OSX_inst_result_image_ro"
  echo_warning "Next command will be executed with sudo, you may be asked for password."
  $sudo_prf hdiutil makehybrid -o "$OSX_inst_result_image_ro" "$OSX_inst_img_rw" -hfs -udf -default-volume-name "$OSX_inst_prt_name" && touch "$OSX_inst_result_flag"
  else
  echo_warning "Usage os sudo was disabled by command parameter"
  fi
fi
fi
if [[ -e "$OSX_inst_result_flag" ]]; then
img_bootable='yes'
stage_end_ok "Converting succeed"
else
rm -f "$OSX_inst_result_image_ro"
stage_end_warn "Creation of optimal .iso was failed, will try to use workarounds to build usable .iso"
[[ "$img_bootable" != 'yes' ]] && echo_warning "Resulting image may not be bootable"

stage_start "Shrinking image"
if hdiutil resize -sectors min "$OSX_inst_img_rw" -nofinalgap; then
  stage_end_ok "succeed"
else
  stage_end_warn "failed, image remains larger than required"
fi

stage_start_nl "Converting image to .iso-like format"
OSX_inst_result_tmp_image="${OSX_inst_result_image_ro%.iso}.cdr" || exit_with_error
[[ -e "$OSX_inst_result_tmp_image" ]] && OSX_inst_result_tmp_image="$tmp_dir/tmp_cdr_img.cdr"
hdiutil convert "$OSX_inst_img_rw" -format UDTO -o "$OSX_inst_result_tmp_image" && \
  mv -vn "$OSX_inst_result_tmp_image" "$OSX_inst_result_image_ro" && iso_created='yes'
if [[ "$iso_created" != "yes" ]]; then
  rm -f "$OSX_inst_result_tmp_image"
  rm -f "$OSX_inst_result_image_ro"
  exit_with_error "Image converting failed"
fi
stage_end_ok "Converting succeed"
fi

echo_enh "
Resulting .iso location:"
echo "$OSX_inst_result_image_ro
"
[[ "$img_bootable" != 'yes' ]] && echo_warning "Resulting .iso may not be bootable"