shell-completion/bash/systemd-resolve

   1 # systemd-resolve(1) completion                             -*- shell-script -*-
   2 # SPDX-License-Identifier: LGPL-2.1+
   3 #
   4 # This file is part of systemd.
   5 #
   6 # Copyright 2016 Zbigniew Jędrzejewski-Szmek
   7 #
   8 # systemd is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU Lesser General Public License as published by
  10 # the Free Software Foundation; either version 2.1 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # systemd is distributed in the hope that it will be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 # General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU Lesser General Public License
  19 # along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20
  21 __contains_word () {
  22         local w word=$1; shift
  23         for w in "$@"; do
  24                 [[ $w = "$word" ]] && return
  25         done
  26 }
  27
  28 __get_interfaces(){
  29         { cd /sys/class/net && echo *; } | \
  30         while read -d' ' -r name; do
  31                 [[ "$name" != "lo" ]] && echo "$name"
  32         done
  33 }
  34
  35 _systemd-resolve() {
  36         local i comps
  37         local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
  38         local -A OPTS=(
  39                [STANDALONE]='-h --help --version --no-pager -4 -6
  40                              --service --openpgp --tlsa --status --statistics
  41                              --reset-statistics --service-address=no --service-txt=no
  42                              --cname=no --search=no --legend=no --flush-caches
  43                              --reset-server-features --revert'
  44                       [ARG]='-i --interface -p --protocol -t --type -c --class --raw
  45                              --set-dns --set-domain --set-llmnr --set-mdns --set-dnssec --set-nta'
  46         )
  47
  48         if __contains_word "$prev" ${OPTS[ARG]}; then
  49                 case $prev in
  50                         --interface|-i)
  51                                 comps=$( __get_interfaces )
  52                                 ;;
  53                         --protocol|-p|--type|-t|--class|-c)
  54                                 comps=$( systemd-resolve --legend=no "$prev" help; echo help )
  55                                 ;;
  56                         --raw)
  57                                 comps="payload packet"
  58                                 ;;
  59                         --set-dns|--set-domain|--set-nta)
  60                                 comps=""
  61                                 ;;
  62                         --set-llmnr|--set-mdns)
  63                                 comps="yes no resolve"
  64                                 ;;
  65                         --set-dnssec)
  66                                 comps="yes no allow-downgrade"
  67                                 ;;
  68                         --set-dnsovertls)
  69                                 comps="no opportunistic"
  70                                 ;;
  71                 esac
  72                 COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
  73                 return 0
  74         fi
  75
  76         if [[ "$cur" = -* ]]; then
  77                 COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") )
  78                 return 0
  79         fi
  80 }
  81
  82 complete -F _systemd-resolve systemd-resolve