general fixes
[distro-setup] / fixvpndns
1 #!/bin/bash
2 # I, Ian Kelling, follow the GNU license recommendations at
3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
4 # recommend that small programs, < 300 lines, be licensed under the
5 # Apache License 2.0. This file contains or is part of one or more small
6 # programs. If a small program grows beyond 300 lines, I plan to switch
7 # its license to GPL.
8
9 # Copyright 2024 Ian Kelling
10
11 # Licensed under the Apache License, Version 2.0 (the "License");
12 # you may not use this file except in compliance with the License.
13 # You may obtain a copy of the License at
14
15 # http://www.apache.org/licenses/LICENSE-2.0
16
17 # Unless required by applicable law or agreed to in writing, software
18 # distributed under the License is distributed on an "AS IS" BASIS,
19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 # See the License for the specific language governing permissions and
21 # limitations under the License.
22
23 source /a/bin/bash-bear-trap/bash-bear
24
25 resolvuid=$(id -u systemd-resolve)
26 case $EUID in
27 0|$resolvuid) : ;;
28 *) exec sudo -E "${BASH_SOURCE[0]}" "$@" ;;
29 esac
30
31
32 if ! resolvectl dnsovertls tunfsf &>/dev/null; then
33 ## most likely the interface doesnt exist. if we wanted verbose output, then:
34 # echo failed resolvectl dnsovertls tunfsf. rerunning:
35 # resolvectl dnsovertls tunfsf ||:
36 exit 0
37 fi
38 read -r _ link _ < <(resolvectl dnsovertls tunfsf)
39 busctl call org.freedesktop.resolve1 /org/freedesktop/resolve1 org.freedesktop.resolve1.Manager SetLinkDNSOverTLS is $link no