From: Scott Worley Date: Tue, 21 Jul 2020 18:10:21 +0000 (-0700) Subject: Modify syncthing config in-place to add device id X-Git-Url: http://git.scottworley.com/syncthing-autoregister/commitdiff_plain/0c29f01e83fdadd491b930a9108519be03c7937d Modify syncthing config in-place to add device id --- 0c29f01e83fdadd491b930a9108519be03c7937d diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..59ce2a3 --- /dev/null +++ b/COPYING @@ -0,0 +1,20 @@ +Copyright (c) 2020 Scott Worley + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/README b/README new file mode 100644 index 0000000..d462866 --- /dev/null +++ b/README @@ -0,0 +1,58 @@ +# syncthing-set-id + +Modify in-place a nix module that configures syncthing device ids. This file can used as a normal `include` in nixos configs. This eliminates the need to copy-paste these device IDs around. + + desktop$ syncthing-set-id syncthing-devices.nix + Creating /home/user/myNixOSConfigs/syncthing-devices.nix + + desktop$ cat syncthing-devices.nix + { + "services" = { + "syncthing" = { + "declarative" = { + "devices" = { + "desktop" = { + "id" = + "1234567-89ABCDE-FGHIJKL-MNOPQRS-TUVWXYZ-0123456-789ABCD-EFGHIJK"; + }; + }; + }; + }; + }; + } + +Then, later, on another machine: + + laptop$ syncthing-set-id syncthing-devices.nix + + laptop$ cat syncthing-devices.nix + { + "services" = { + "syncthing" = { + "declarative" = { + "devices" = { + "desktop" = { + "id" = + "1234567-89ABCDE-FGHIJKL-MNOPQRS-TUVWXYZ-0123456-789ABCD-EFGHIJK"; + }; + "laptop" = { + "id" = + "1111111-2222222-3333333-4444444-5555555-6666666-7777777-8888888"; + }; + }; + }; + }; + }; + } + +Usage + + $ syncthing-set-id + + usage: syncthing-set-device-id file [name] [id] + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix lappy + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix lappy 1234567-89ABCDE-FGHIJKL-MNOPQRS-TUVWXYZ-0123456-789ABCD-EFGHIJK + + If `name` is not specified, $HOSTNAME is used. + If `id` is not specified, the ID of the current system instance is used. diff --git a/default.nix b/default.nix new file mode 100644 index 0000000..320a65f --- /dev/null +++ b/default.nix @@ -0,0 +1,8 @@ +{ pkgs ? import { }, }: + +pkgs.lib.makeScope pkgs.newScope (self: + with self; { + + syncthing-set-id = callPackage ./syncthing-set-id.nix { }; + + }) diff --git a/syncthing-set-id.nix b/syncthing-set-id.nix new file mode 100644 index 0000000..0277983 --- /dev/null +++ b/syncthing-set-id.nix @@ -0,0 +1,52 @@ +{ coreutils, jq, nix, nixfmt, syncthing, writeShellScriptBin, }: +writeShellScriptBin "syncthing-set-id" '' + set -euo pipefail + + PATH="${coreutils}/bin" + + usage() { + cat <<< ' + usage: syncthing-set-device-id file [name] [id] + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix lappy + example: syncthing-set-device-id /etc/nixos/modules/syncthing-devices.nix lappy 1234567-89ABCDE-FGHIJKL-MNOPQRS-TUVWXYZ-0123456-789ABCD-EFGHIJK + + If `name` is not specified, $HOSTNAME is used. + If `id` is not specified, the ID of the current system instance is used. + ' >&2 + exit 1 + } + + [[ $# -lt 1 || "$1" == --help ]] && usage + file=$(realpath "$1") + name=''${2:-"$HOSTNAME"} + if (( $# < 3));then + configDir=$(${nix}/bin/nix eval --raw '(import {}).config.services.syncthing.configDir') + id=$(${syncthing}/bin/syncthing -home="$configDir" -device-id) + else + id=$3 + fi + + if [[ ! -e "$file" ]];then + echo "Creating $file" >&2 + echo '{}' > "$file" + fi + + tmp=$(mktemp "$(dirname "$file")/.$(basename "$file").XXXXXXXXXX") + + # Use `nix-instantiate --eval -E --json | jq -r` instead of `nix eval --raw` until + # https://github.com/NixOS/nix/issues/2678 is fixed. + ${nix}/bin/nix-instantiate --eval -E --json \ + --argstr file "$file" \ + --argstr name "$name" \ + --argstr id "$id" \ + ' + { file, name, id }: + let pkgs = import { }; + in pkgs.lib.generators.toPretty { } (pkgs.lib.recursiveUpdate (import file) { + services.syncthing.declarative.devices."''${name}".id = id; + }) + ' | ${jq}/bin/jq -r | ${nixfmt}/bin/nixfmt > "$tmp" + + mv "$tmp" "$file" +''