tftpboot/scripts/download_clonezilla.sh

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#!/bin/bash
# Purpose {{{
# This script will download Clonezilla Stable installer for both AMD64 and i368
# and make a sample menu.cfg config file.
# }}}
# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly NBARGS="${#}"
[ -z "${DEBUG}" ] && DEBUG=1
## Export DEBUG for sub-script
export DEBUG
# Default value for TFTP's directory
if command -v in.tftpd > /dev/null; then
source /etc/default/tftpd-hpa
else
TFTP_DIRECTORY="/srv/tftp"
fi
CZ_INSTALLER_DIR="${TFTP_DIRECTORY}/installer/clonezilla"
CZ_CONFIG_PXE="${CZ_INSTALLER_DIR}/menu.cfg.example"
# Get latest version from https://clonezilla.org
CZ_VERSION_DEFAULT="$(curl --no-progress-meter https://clonezilla.org/downloads.php | sed --silent 's;.*<b>stable</b>.*<font.*>\(.*\)</font>.*;\1;p')"
## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
# }}}
usage() { # {{{
cat <<- EOF
usage: $PROGNAME [-d|-h|-v]
This script will download Clonezilla Stable for both AMD64 and i368 architectures.
EXAMPLES:
- Download Clonezilla's to default place (${TFTP_DIRECTORY}).
${PROGNAME}
- Download a specific version of Clonezilla (default : ${CZ_VERSION_DEFAULT}).
${PROGNAME} --version "2.7.1"
OPTIONS:
-v,--version
Define the version of Clonezilla to download.
-d,--debug
Enable debug messages.
-h,--help
Print this help message.
EOF
}
# }}}
debug_message() { # {{{
local_message="${1}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG ${PROGNAME}: ${local_message}"
return 0
}
# }}}
error_message() { # {{{
local_error_message="${1}"
local_error_code="${2}"
## Print message
printf '%b\n' "ERROR ${PROGNAME}: ${RED}${local_error_message}${RESET}"
exit "${local_error_code:=66}"
}
# }}}
define_vars() { # {{{
# If cz_version wasn't defined (argument) {{{
if [ -z "${cz_version}" ]; then
## Use default value
cz_version="${CZ_VERSION_DEFAULT}"
fi
# }}}
}
# }}}
is_var_empty() { # {{{
## Return False by default
return_var_empty="1"
## Total number of variables to test
local_total_var="${#}"
loop_count_var_empty="0"
## While it remains a variable to test
while [ "${local_total_var}" -gt "${loop_count_var_empty}" ]; do
debug_message "is_var_empty \
Test var: ${1}."
### Test if this is empty and set return value to True
[ -z "${1}" ] && return_var_empty="0"
### Increase the number of tested variables
loop_count_var_empty=$((loop_count_var_empty+1))
### Shift to the next variable
shift
done
return "${return_var_empty}"
}
# }}}
is_file_absent() { # {{{
local_file_absent="${1}"
## File exists by default
return_is_file_absent="1"
### Check if the file exists
# shellcheck disable=SC2086
if find ${local_file_absent} > /dev/null 2>&1; then
return_is_file_absent="1"
debug_message "is_file_absent \
The file ${RED}${local_file_absent}${COLOR_DEBUG} exists."
else
return_is_file_absent="0"
debug_message "is_file_absent \
The file ${RED}${local_file_absent}${COLOR_DEBUG} doesn't exist."
fi
return "${return_is_file_absent}"
}
# }}}
download_file() { # {{{
local_url="${1}"
local_dest_file="${2}"
debug_message "download_file \
Download ${local_url} to ${RED}${local_dest_file}${COLOR_DEBUG} ."
wget --quiet "${local_url}" --output-document="${local_dest_file}"
## Unset variables
unset local_url
unset local_dest_file
}
# }}}
is_file_empty() { # {{{
local_file="${1}"
## File is empty by default
return_is_file_empty="0"
### Check if the file is empty
if [ ! -s "${local_file}" ]; then
return_is_file_empty="0"
debug_message "is_file_empty \
The file ${RED}${local_file}${COLOR_DEBUG} is empty or doesn't exists."
else
return_is_file_empty="1"
debug_message "is_file_empty \
The file ${RED}${local_file}${COLOR_DEBUG} exists and has a size greater than zero."
fi
## Unset variables
unset local_file
return "${return_is_file_empty}"
}
# }}}
main() { # {{{
# Define all vars
define_vars
# If cz_version is empty {{{
# Exit with error
is_var_empty "${cz_version}" \
&& error_message "Clonezilla version variable is empty" 6
# }}}
# Create directories and config file
debug_message "Main \
Create ${CZ_INSTALLER_DIR} tree."
mkdir --parents -- "${CZ_INSTALLER_DIR}" \
|| error_message "Can't create ${CZ_INSTALLER_DIR}/ directory." 1
true > "${CZ_CONFIG_PXE}"
for ARCH in amd64 i686; do # For available classic architectures
#CZ_URL="https://osdn.jp/dl/clonezilla/clonezilla-live-${cz_version}-${ARCH}.zip"
CZ_URL="https://sourceforge.net/projects/clonezilla/files/clonezilla_live_stable/${cz_version}/clonezilla-live-${cz_version}-${ARCH}.zip/download"
CZ_TEMP_FILE="/tmp/clonezilla-live-${cz_version}-${ARCH}.zip"
## If this version is not already present on the system
if is_file_absent "${CZ_INSTALLER_DIR}/${ARCH}/${cz_version}"; then
### Recreate directory and go
rm --recursive --force -- "${CZ_INSTALLER_DIR}/${ARCH}"
mkdir --parents -- "${CZ_INSTALLER_DIR}/${ARCH}" \
|| error_message "Can't create ${CZ_INSTALLER_DIR}/${ARCH}/ directory." 1
pushd "${CZ_INSTALLER_DIR}/${ARCH}" > /dev/null \
|| error_message "Can't move to ${CZ_INSTALLER_DIR}/${ARCH} temp directory." 2
### Download and extract only PXE files {{{
download_file "${CZ_URL}" "${CZ_TEMP_FILE}"
is_file_empty "${CZ_TEMP_FILE}" \
&& error_message "${CZ_TEMP_FILE} is empty." 3
debug_message "FOR loop ${ARCH} \
Uncompress PXE files from ${CZ_TEMP_FILE} ."
2022-01-28 20:16:35 +01:00
unzip -qq -j "${CZ_TEMP_FILE}" live/vmlinuz live/initrd.img live/filesystem.squashfs -d . \
|| error_message "Can't properly extract ${CZ_TEMP_FILE} archive."
### }}}
### Remove temp file
2022-01-28 20:16:35 +01:00
rm --force -- "${CZ_TEMP_FILE}" \
|| error_message "Can't remove ${CZ_TEMP_FILE} temp file."
### Add flag file to know that this version is available
true > "${CZ_INSTALLER_DIR}/${ARCH}/${cz_version}"
popd > /dev/null \
|| error_message "Can't move back from ${CZ_INSTALLER_DIR}/${ARCH}/ directory." 2
fi
## Add informations to sample config file
/bin/cat >> "${CZ_CONFIG_PXE}" << EOF
label live${ARCH}
menu label Clonezilla Live ^${ARCH}
kernel installer/clonezilla/${ARCH}/vmlinuz
APPEND initrd=installer/clonezilla/${ARCH}/initrd.img boot=live username=user union=overlay config components quiet noswap edd=on nomodeset nodmraid locales= keyboard-layouts= ocs_live_run="ocs-live-general" ocs_live_extra_param="" ocs_live_batch=no net.ifnames=0 nosplash noprompt fetch=tftp://129.20.203.27/installer/clonezilla/${ARCH}/filesystem.squashfs
EOF
done
# Add separator and menu to sample config file
/bin/cat >> "${CZ_CONFIG_PXE}" << EOF
label separator
menu label -----
label mainmenu
menu label ^Back..
menu exit
EOF
}
# }}}
# Manage arguments # {{{
# This code can't be in a function due to argument management
if [ ! "${NBARGS}" -eq "0" ]; then
manage_arg="0"
## If the first argument is not an option
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
then
## Print help message and exit
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
fi
# Parse all options (start with a "-") one by one
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
case "${1}" in
-v|--version ) ## Define cz_version
## Move to the next argument
shift
## Define var
readonly cz_version="${1}"
;;
-d|--debug ) ## debug
DEBUG=0
;;
-h|--help ) ## help
usage
## Exit after help informations
exit 0
;;
* ) ## unknow option
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
;;
esac
debug_message "Arguments management \
${RED}${1}${COLOR_DEBUG} option managed."
## Move to the next argument
shift
manage_arg=$((manage_arg+1))
done
debug_message "Arguments management \
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
else
debug_message "Arguments management \
No arguments/options to manage."
fi
# }}}
main
exit 0