summaryrefslogtreecommitdiff
path: root/shell-completion/bash/resolvectl
blob: 54b241ce90e5f6a7ea66686ca96c089ed5f1390a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
# resolvectl(1) completion                                  -*- shell-script -*-
# SPDX-License-Identifier: LGPL-2.1+
#
# 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 <http://www.gnu.org/licenses/>.

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

__get_interfaces(){
    local name
    for name in $(cd /sys/class/net && ls); do
        [[ "$name" != "lo" ]] && echo "$name"
    done
}

_resolvectl() {
    local i comps verb name
    local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]}
    local -A OPTS=(
        [STANDALONE]='-h --help --version --no-pager -4 -6
                      --service-address=no --service-txt=no
                      --cname=no --search=no --legend=no'
        [ARG]='-i --interface -p --protocol -t --type -c --class --raw'
    )
    local -A VERBS=(
        [DOMAIN]='query service openpgp'
        [FAMILY]='tlsa'
        [STATUS]='status'
        [LINK]='revert dns domain nta'
        [RESOLVE]='llmnr mdns'
        [DNSSEC]='dnssec'
        [DNSOVERTLS]='dnsovertls'
        [STANDALONE]='statistics reset-statistics flush-caches reset-server-features'
        [LOG_LEVEL]='log-level'
    )
    local -A ARGS=(
        [FAMILY]='tcp udp sctp'
        [RESOLVE]='yes no resolve'
        [DNSSEC]='yes no allow-downgrade'
        [DNSOVERTLS]='yes no opportunistic'
    )
    local interfaces=$( __get_interfaces )

    if __contains_word "$prev" ${OPTS[ARG]}; then
        case $prev in
            --interface|-i)
                comps="$interfaces"
                ;;
            --protocol|-p|--type|-t|--class|-c)
                comps=$( resolvectl --legend=no "$prev" help; echo help )
                ;;
            --raw)
                comps="payload packet"
                ;;
        esac
        COMPREPLY=( $(compgen -W '$comps' -- "$cur") )
        return 0
    fi

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

    for ((i=0; i < COMP_CWORD; i++)); do
        if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]} &&
                ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
            verb=${COMP_WORDS[i]}
            break
        fi
    done

    if [[ -z $verb ]]; then
        comps="${VERBS[*]}"

    elif __contains_word "$verb" ${VERBS[STANDALONE]} ${VERBS[DOMAIN]}; then
        comps=''

    elif __contains_word "$verb" ${VERBS[STATUS]}; then
        comps="$interfaces"

    elif __contains_word "$verb" ${VERBS[LOG_LEVEL]}; then
        comps='debug info notice warning err crit alert emerg'

    elif __contains_word "$verb" ${VERBS[FAMILY]}; then
        for ((i++; i < COMP_CWORD; i++)); do
            if __contains_word "${COMP_WORDS[i]}" ${ARGS[FAMILY]} &&
                    ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                name=${COMP_WORDS[i]}
                break;
            fi
        done
        if [[ -z $name ]]; then
            comps=${ARGS[FAMILY]}
        else
            comps=""
        fi

    elif __contains_word "$verb" ${VERBS[LINK]} ${VERBS[RESOLVE]} ${VERBS[DNSSEC]} ${VERBS[DNSOVERTLS]}; then
        for ((i++; i < COMP_CWORD; i++)); do
            if __contains_word "${COMP_WORDS[i]}" $interfaces &&
                    ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                name=${COMP_WORDS[i]}
                break;
            fi
        done

        if [[ -z $name ]]; then
            comps="$interfaces"

        elif __contains_word "$verb" ${VERBS[RESOLVE]}; then
            name=
            for ((i++; i < COMP_CWORD; i++)); do
                if __contains_word "${COMP_WORDS[i]}" ${ARGS[RESOLVE]} &&
                        ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                    name=${COMP_WORDS[i]}
                    break;
                fi
            done

            if [[ -z $name ]]; then
                comps=${ARGS[RESOLVE]}
            else
                comps=''
            fi

        elif __contains_word "$verb" ${VERBS[DNSSEC]}; then
            name=
            for ((i++; i < COMP_CWORD; i++)); do
                if __contains_word "${COMP_WORDS[i]}" ${ARGS[DNSSEC]} &&
                        ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                    name=${COMP_WORDS[i]}
                    break;
                fi
            done

            if [[ -z $name ]]; then
                comps=${ARGS[DNSSEC]}
            else
                comps=''
            fi

        elif __contains_word "$verb" ${VERBS[DNSOVERTLS]}; then
            name=
            for ((i++; i < COMP_CWORD; i++)); do
                if __contains_word "${COMP_WORDS[i]}" ${ARGS[DNSOVERTLS]} &&
                        ! __contains_word "${COMP_WORDS[i-1]}" ${OPTS[ARG]}; then
                    name=${COMP_WORDS[i]}
                    break;
                fi
            done

            if [[ -z $name ]]; then
                comps=${ARGS[DNSOVERTLS]}
            else
                comps=''
            fi

        else
            comps=''
        fi
    fi

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

complete -F _resolvectl resolvectl