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#!/bin/bash
# -----------------------------------------------------------------
# Programmable completion code for ipset (netfilter.org)
#
# https://github.com/AllKind/ipset-bash-completion
# https://sourceforge.net/projects/ipset-bashcompl
# -----------------------------------------------------------------
# Copyright (C) 2013 AllKind (AllKind@fastest.cc)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# -----------------------------------------------------------------
# Tested with ipset versions:
# 6.16.1
# -----------------------------------------------------------------
#
# Put it into ~/.bash_completion or /etc/bash_completion.d/
#
# -----------------------------------------------------------------
#
# Version 1.9
#
# -----------------------------------------------------------------
_ipset_bash_default_compl() { # taken from examples - modified by me
# call with the word to be completed as $1
local t
if [[ $1 == \$\(* ]]; then # command substitution
t=${1#??}
COMPREPLY=( $(compgen -c -P '$(' $t) )
elif [[ $1 == \$\{* ]]; then # variables with a leading `${'
t=${1#??}
COMPREPLY=( $(compgen -v -P '${' -S '}' $t) )
elif [[ $1 == \$* ]]; then # variables with a leading `$'
t=${1#?}
COMPREPLY=( $(compgen -v -P '$' $t ) )
elif [[ "$1" == *@* ]]; then # hostname
t=${1#*@}
COMPREPLY=( $( compgen -A hostname $t ) )
elif [[ $1 == *[*?[]* ]]; then # sh-style glob pattern
COMPREPLY=( $( compgen -G "$1" ) )
# ksh-style extended glob pattern - must be complete
elif shopt -q extglob && [[ $1 == *[?*+\!@]\(*\)* ]]; then
COMPREPLY=( $( compgen -G "$1" ) )
fi
}
_ipset_complete() {
shopt -s extglob
local cur prev str_action ips_version
local -i i=x=y=got_action=in_list=0
local -i ignore_errors=use_file=names_only=headers_only=save_format=res_sort=0
local arr_sets=() arr_types=() arr_members=()
# ipset version check 6.x upwards (to v?) is supported
ips_version="$(ipset --version)"
ips_version="${ips_version#ipset v}"
ips_version="${ips_version%%.*}"
[[ $ips_version = +([[:digit:]]) ]] || return 1
((ips_version < 6)) && return 1
COMPREPLY=()
COMP_WORDBREAKS=$' \t\n"\'><=;|&('
# expecting _get_comp_words_by_ref() to exist from bash_completion
_get_comp_words_by_ref cur || return
_get_comp_words_by_ref prev || return
#DEBUG=Y
if [[ $DEBUG ]]; then
printf "\nCOMP_WORDBREAKS: <%s>\n" "$COMP_WORDBREAKS"
printf "COMP_LINE: <%s>\n" "$COMP_LINE"
printf "COMP_TYPE: <%s>\n" "$COMP_TYPE"
printf "COMP_POINT: <%s>\n" "$COMP_POINT"
printf "COMP_KEY: <%s>\n" "$COMP_KEY"
printf "COMP_CWORD: <%s>\n" "$COMP_CWORD"
printf "COMP_WORDS:\n"
printf "<%s>\n" "${COMP_WORDS[@]}"
printf "cur: <%s> prev: <%s>\n" "$cur" "$prev"
fi
for i in ${!COMP_WORDS[@]}; do # check if we already have an action registered
if [[ ${COMP_WORDS[i]} = @(create|add|del|test|destroy|list|save|restore|flush|rename|swap|help|version) ]]; then
if [[ ${COMP_WORDS[i]} != save ]]; then
got_action=1 str_action=${COMP_WORDS[i]}
break
else
if [[ ${COMP_WORDS[i-1]} != -o ]]; then
got_action=1 str_action=${COMP_WORDS[i]}
break
fi
fi
fi
done
# collect information about used options
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do
case "${COMP_WORDS[i]}" in
-\!) ignore_errors=1 ;;
-f) use_file=1 ;;
-n) names_only=1 ;;
-t) headers_only=1 ;;
-o) save_format=1
if [[ $prev = -o ]]; then
save_format=2 # expecting opt-arg
elif [[ ${COMP_WORDS[i+1]} = save ]]; then
save_format=3 # no -n/-t with -o save
fi
;;
-r|-s) res_sort=1 ;;
esac
done
# invalid combination of options
if ((names_only && headers_only)); then
COMPREPLY=()
return 0
elif ((names_only || headers_only)); then
if ((res_sort || ignore_errors)) || ((save_format == 3)); then
COMPREPLY=()
return 0
fi
elif ((ignore_errors)); then
if ((res_sort || save_format)); then
COMPREPLY=()
return 0
fi
fi
# for help or create, find supported set types and save them into an array
if [[ $str_action = @(help|create) ]]; then i=0
while read -r; do
[[ $REPLY = "Supported set types:"* ]] && ((!i)) && i=1 && continue
((i)) || continue
if [[ $REPLY = *:* ]]; then
set -- $REPLY
arr_types[${#arr_types[@]}]="$1"
fi
done < <(ipset help)
for i in ${!arr_types[@]}; do # remove dupe entries
for ((x=i+1; x <= ${#arr_types[@]}; x++)); do
if [[ ${arr_types[i]} = ${arr_types[x]} ]]; then
unset arr_types[x]
fi
done
done
fi
case "$cur" in
-*) # any option is requested
if ((save_format == 2)); then
COMPREPLY=()
return 0
fi
case "$prev" in
create|add|del|test|rename|swap) # -option not expected
COMPREPLY=()
return 0
;;
\<|\>|-f) compopt -o nospace # expecting filenames as completion
COMPREPLY=( $( compgen -f -- $cur ) )
return 0
;;
-) COMPREPLY=() # interactive mode
return 0
;;
esac
if ((got_action)); then
case "$str_action" in
create|add|del)
COMPREPLY=( -\! -q )
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do
if [[ $str_action = ${COMP_WORDS[i]} && ${COMP_WORDS[i+2]} = -* ]]; then
COMPREPLY=() # option not expected, want command value
break
fi
done
;;
destroy|flush) COMPREPLY=( -q ) ;;
list)
if ((names_only || headers_only)); then
COMPREPLY=( -f -o -q )
elif ((res_sort)); then
COMPREPLY=( -f -o -q -r -s )
elif ((save_format == 1)); then
COMPREPLY=( -f -q -r -s -t )
elif ((save_format == 3)); then
COMPREPLY=( -f -q -r -s )
else
COMPREPLY=( -f -n -o -q -r -s -t )
fi
;;
restore) COMPREPLY=( -\! -f -q ) ;;
save) COMPREPLY=( -f -q ) ;;
rename|swap|test) COMPREPLY=( -q )
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do
if [[ $str_action = ${COMP_WORDS[i]} && ${COMP_WORDS[i+2]} = -* ]]; then
COMPREPLY=() # option not expected, want command value
break
fi
done
;;
help|version) COMPREPLY=()
return 0
;;
esac
else COMPREPLY=( - -\! -f -n -o -q -r -s -t )
if ((names_only || headers_only)) && ((save_format == 1)); then
COMPREPLY=( -f -q )
elif ((names_only || headers_only)); then
COMPREPLY=( -f -o -q )
elif ((res_sort)); then
COMPREPLY=( -f -o -q -r -s )
elif ((save_format == 1)); then
COMPREPLY=( -f -q -r -s -t )
elif ((save_format == 3)); then
COMPREPLY=( -f -q -r -s )
elif ((ignore_errors)); then
COMPREPLY=( -f -q )
elif ((use_file)); then
COMPREPLY=( -\! -n -o -q -r -s -t )
fi
fi
;;
\<|\>) # redirection operator
compopt -o nospace
COMPREPLY=( $( compgen -f ) ) # no $cur, so completion starts without space after redirection
return 0
;;
\$\{*) # variables with a leading `${'
COMPREPLY=( $(compgen -v -P '${' -S '}' ${cur#??}) )
return 0
;;
\$*) # variables with a leading `$'
COMPREPLY=( $(compgen -v -P '$' ${cur#?} ) )
return 0
;;
*) # not an option
if ((got_action)); then
arr_sets=( $(ipset list -n ) )
else
COMPREPLY=( $( compgen -W 'create add del test destroy list save restore flush rename swap help version' -- $cur ) )
fi
case "$prev" in # depend on previous option
restore) COMPREPLY=( \< )
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do
if [[ ${COMP_WORDS[i]} = -f ]]; then
COMPREPLY=() # don't show redirector if we have option -f
break
fi
done
return 0
;;
create|version) COMPREPLY=()
return 0
;;
add|del|destroy|rename|swap|test)
COMPREPLY=( $( compgen -W '${arr_sets[@]}' -- $cur ) )
return 0
;;
save)
if [[ $str_action = save ]]; then
COMPREPLY=( $( compgen -W '${arr_sets[@]}' -- $cur ) )
else
if ((save_format == 3)); then
COMPREPLY=( $( compgen -W 'list' -- $cur ) )
fi
fi
;;
list) COMPREPLY=( $( compgen -W '${arr_sets[@]}' -- $cur ) )
return 0
;;
help) COMPREPLY=( $( compgen -W '${arr_types[@]}' -- $cur ) )
return 0
;;
-o)
if ((names_only || headers_only)); then
COMPREPLY=( $( compgen -W 'plain xml' -- $cur ) )
else
COMPREPLY=( $( compgen -W 'plain save xml' -- $cur ) )
fi
return 0
;;
-f) compopt -o nospace
COMPREPLY=( $( compgen -f -- $cur ) )
return 0
;;
\<|\>) compopt -o nospace
COMPREPLY=( $( compgen -f -- $cur ) )
return 0
;;
-) COMPREPLY=() # interactive mode
return 0
;;
*)
if ((got_action)); then
COMPREPLY=( $( compgen -W '${arr_sets[@]}' -- $cur ) )
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do
case "${COMP_WORDS[i]}" in
add)
for ((x=${COMP_WORDS[i+1]}; x <= ${#COMP_WORDS[@]}; x++)); do
if [[ ${COMP_WORDS[x]} = $prev ]]; then
COMPREPLY=() # only list sets after the action command
break 2
fi
done
break
;;
create) COMPREPLY=()
if [[ ${COMP_WORDS[i+1]} = $prev ]]; then
COMPREPLY=( $( compgen -W '${arr_types[@]}' -- $cur ) )
fi
break
;;
del) # complete members
if [[ ${COMP_WORDS[i+1]} = $prev ]]; then
while read -r; do
[[ $REPLY = Members:* ]] && in_list=1 && continue
((in_list)) || continue
arr_members[${#arr_members[@]}]="$REPLY"
done < <(ipset list "$prev" 2>/dev/null)
COMPREPLY=( $( compgen -W '${arr_members[@]}' -- $cur ) )
else
COMPREPLY=()
fi
break
;;
help)
if [[ ${COMP_WORDS[i+1]} ]]; then
COMPREPLY=() # don't go further than showing the set types
return 0
fi
break
;;
restore) COMPREPLY=() # not a redirecton
break
;;
swap)
for x in ${!arr_sets[@]}; do
if [[ ${arr_sets[x]} = ${COMP_WORDS[i+2]} ]]; then
COMPREPLY=() # only list two sets
break 2
fi
done
break
;;
*)
for ((y=1; y <= ${#COMP_WORDS[@]}; y++)); do
[[ ${COMP_WORDS[y]} ]] || continue
for x in ${!arr_sets[@]}; do
if [[ ${arr_sets[x]} = ${COMP_WORDS[y]} ]]; then
COMPREPLY=() # list only one set
break 2
fi
done
done
;;
esac
done
else # we don't have the action yet, check options to display appropiate actions
if ((save_format || names_only || headers_only)); then
COMPREPLY=( $( compgen -W 'list' -- $cur ) )
return 0
elif ((res_sort)); then
COMPREPLY=( $( compgen -W 'list save' -- $cur ) )
return 0
elif ((ignore_errors && use_file)); then
COMPREPLY=( $( compgen -W 'restore' -- $cur ) )
return 0
elif ((ignore_errors)); then
COMPREPLY=( $( compgen -W 'create add del restore' -- $cur ) )
return 0
elif ((use_file)); then
COMPREPLY=( $( compgen -W 'list save restore' -- $cur ) )
return 0
fi
fi
;;
esac
;;
esac
if ((${#COMPREPLY[@]})); then # post process the reply
for ((i=1; i <= ${#COMP_WORDS[@]}; i++)); do # remove dupe options
[[ ${COMP_WORDS[i]} = @(""|-) ]] && continue
for x in ${!COMPREPLY[@]}; do
if [[ ${COMP_WORDS[i]} = ${COMPREPLY[x]} ]]; then
unset COMPREPLY[$x]
break
fi
done
done
else
_ipset_bash_default_compl "$cur"
fi
if [[ $DEBUG ]]; then
printf "COMPREPLY:\n"
printf "<%s>\n" "${COMPREPLY[@]}"
fi
}
complete -F _ipset_complete ipset
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