Mini Shell

# systemd-cryptenroll(1) completion                   -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# systemd is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <https://www.gnu.org/licenses/>.

__contains_word() {
    local w word=$1; shift
    for w in "$@"; do
        [[ $w = "$word" ]] && return
    done
}

__get_fido2_devices() {
    local i
    for i in /dev/hidraw*; do
        [ -c "$i" ] && printf '%s\n' "$i"
    done
}

__get_tpm2_devices() {
    local i
    for i in /dev/tpmrm*; do
        [ -c "$i" ] && printf '%s\n' "$i"
    done
}

__get_block_devices() {
    local i
    for i in /dev/*; do
        [ -b "$i" ] && printf '%s\n' "$i"
    done
}

_systemd-cryptenroll() {
    local comps
    local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]} words cword
    local -A OPTS=(
        [STANDALONE]='-h --help --version
                     --password --recovery-key'
        [ARG]='--unlock-key-file
               --pkcs11-token-uri
               --fido2-credential-algorithm
               --fido2-device
               --fido2-with-client-pin
               --fido2-with-user-presence
               --fido2-with-user-verification
               --tpm2-device
               --tpm2-pcrs
               --tpm2-public-key
               --tpm2-public-key-pcrs
               --tpm2-signature
               --tpm2-with-pin
               --wipe-slot'
    )

    _init_completion || return

    if __contains_word "$prev" ${OPTS[ARG]}; then
        case $prev in
            --unlock-key-file|--tpm2-public-key|--tpm2-signature)
                comps=$(compgen -A file -- "$cur")
                compopt -o filenames
                ;;
            --pkcs11-token-uri)
                comps='auto list pkcs11:'
                ;;
            --fido2-credential-algorithm)
                comps='es256 rs256 eddsa'
                ;;
            --fido2-device)
                comps="auto list $(__get_fido2_devices)"
                ;;
            --fido2-with-client-pin|--fido2-with-user-presence|--fido2-with-user-verification|--tpm2-with-pin)
                comps='yes no'
                ;;
            --tpm2-device)
                comps="auto list $(__get_tpm2_devices)"
                ;;
            --wipe-slot)
                comps='all empty password recovery pkcs11 fido2 tpm2'
                ;;
        esac
        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
        return 0
    fi

    if [[ "$cur" = -* ]]; then
        COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
        return 0
    fi

    comps=$(__get_block_devices)
    COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
    return 0
}

complete -F _systemd-cryptenroll systemd-cryptenroll