240 lines
6.2 KiB
Bash
Executable File
240 lines
6.2 KiB
Bash
Executable File
#!/bin/bash
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# Purpose {{{
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# This script will download Debian netboot installer for both AMD64 and i368
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# 1. Debian Stable (Bullseye)
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# 2. Debian oldStable (Buster)
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# 4. Debian Unstable (Sid)
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# and make a sample menu.cfg config file.
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# }}}
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# Vars {{{
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readonly PROGNAME=$(basename "${0}")
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readonly NBARGS="${#}"
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[ -z "${DEBUG}" ] && DEBUG=1
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## Export DEBUG for sub-script
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export DEBUG
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# Default value for TFTP's directory
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if command -v in.tftpd > /dev/null; then
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source /etc/default/tftpd-hpa
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else
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TFTP_DIRECTORY="/srv/tftp"
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fi
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# Where to store Debian's installers
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DEBIAN_INSTALLER_DIR="${TFTP_DIRECTORY}/installer/debian"
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# tftp sample config file
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DEBIAN_CONFIG_PXE="${DEBIAN_INSTALLER_DIR}/menu.cfg.example"
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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usage() { # {{{
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cat <<- EOF
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usage: $PROGNAME [-d|-h]
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This script will download "all" Debian's netboot installer for
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tftp server for both AMD64 and i368 architectures.
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EXAMPLES :
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- Download Debian's installers to default place (${TFTP_DIRECTORY})
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${PROGNAME}
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OPTIONS :
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-d,--debug
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Enable debug messages.
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-h,--help
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Print this help message.
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EOF
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}
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# }}}
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debug_message() { # {{{
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local_message="${1}"
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## Print message if DEBUG is enable (=0)
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_message}"
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return 0
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}
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# }}}
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error_message() { # {{{
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local_error_message="${1}"
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local_error_code="${2}"
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## Print message
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printf '%b\n' "ERROR − ${PROGNAME} : ${RED}${local_error_message}${RESET}"
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exit "${local_error_code:=66}"
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}
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# }}}
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download_file() { # {{{
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local_url="${1}"
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local_dest_file="${2}"
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debug_message "download_file − \
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Download ${local_url} to ${RED}${local_dest_file}${COLOR_DEBUG} ."
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wget --quiet "${local_url}" --output-document="${local_dest_file}"
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## Unset variables
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unset local_url
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unset local_dest_file
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}
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# }}}
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is_file_empty() { # {{{
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local_file="${1}"
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## File is empty by default
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return_is_file_empty="0"
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### Check if the file is empty
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if [ ! -s "${local_file}" ]; then
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return_is_file_empty="0"
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debug_message "is_file_empty − \
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The file ${RED}${local_file}${COLOR_DEBUG} is empty or doesn't exists."
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else
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return_is_file_empty="1"
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debug_message "is_file_empty − \
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The file ${RED}${local_file}${COLOR_DEBUG} exists and has a size greater than zero."
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fi
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## Unset variables
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unset local_file
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return "${return_is_file_empty}"
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}
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# }}}
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main() { # {{{
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# Create directories and config file
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debug_message "Main − \
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Create ${DEBIAN_INSTALLER_DIR} tree."
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mkdir --parents -- "${DEBIAN_INSTALLER_DIR}" \
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|| error_message "Can't create ${DEBIAN_INSTALLER_DIR} directory." "1"
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debug_message "Main − \
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(re)Create ${DEBIAN_CONFIG_PXE} sample config file."
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true > "${DEBIAN_CONFIG_PXE}"
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# Parse all Debian's distribution
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for DISTRO in bullseye buster sid; do # For "all" Debian's version
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## Then parse architecture
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for ARCH in amd64 i386; do # For all classic architecture
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debug_message "Main FOR loop − \
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Manage ${RED}${DISTRO}${COLOR_DEBUG} release with ${RED}${ARCH}${COLOR_DEBUG} architecture."
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### Create destination directory
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mkdir --parents -- ${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH} \
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|| error_message "Can't create ${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH} tree." "1"
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### Download linux file
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download_file "http://deb.debian.org/debian/dists/${DISTRO}/main/installer-${ARCH}/current/images/netboot/debian-installer/${ARCH}/linux" \
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"${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/linux"
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is_file_empty "${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/linux" \
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&& error_message "${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/linux is empty !" "2"
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### Download initrd.gz
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download_file "http://deb.debian.org/debian/dists/${DISTRO}/main/installer-${ARCH}/current/images/netboot/debian-installer/${ARCH}/initrd.gz" \
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"${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/initrd.gz"
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is_file_empty "${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/initrd.gz" \
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&& error_message "${DEBIAN_INSTALLER_DIR}/${DISTRO}/${ARCH}/initrd.gz is empty !" "2"
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### Config file
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debug_message "Main FOR loop − \
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Add tftp config sample."
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/bin/cat >> "${DEBIAN_CONFIG_PXE}" << EOF
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label ${DISTRO}${ARCH}
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menu label Debian GNU/Linux ${DISTRO} ^${ARCH} bits
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kernel installer/debian/${DISTRO}/${ARCH}/linux
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append vga=normal initrd=installer/debian/${DISTRO}/${ARCH}/initrd.gz -- quiet
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EOF
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done
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# Config file
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/bin/cat >> "${DEBIAN_CONFIG_PXE}" << EOF
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label separator
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menu label ---
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EOF
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done
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# Config file
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/bin/cat >> "${DEBIAN_CONFIG_PXE}" << EOF
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label mainmenu
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menu label ^Back...
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menu exit
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EOF
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}
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# }}}
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# Manage arguments # {{{
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# This code can't be in a function due to argument management
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if [ ! "${NBARGS}" -eq "0" ]; then
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manage_arg="0"
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## If the first argument is not an option
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if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
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then
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## Print help message and exit
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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fi
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# Parse all options (start with a "-") one by one
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while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
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case "${1}" in
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-d|--debug ) ## debug
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DEBUG=0
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;;
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-h|--help ) ## help
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usage
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## Exit after help informations
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exit 0
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;;
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* ) ## unknow option
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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;;
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esac
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debug_message "Arguments management − \
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${RED}${1}${COLOR_DEBUG} option managed."
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## Move to the next argument
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shift
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manage_arg=$((manage_arg+1))
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done
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debug_message "Arguments management − \
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${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
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else
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debug_message "Arguments management − \
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No arguments/options to manage."
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fi
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# }}}
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main
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exit 0
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