diff --git a/nixos/modules/services/networking/syncthing.nix b/nixos/modules/services/networking/syncthing.nix
index 114a64dfb17..89dae7bb3f8 100644
--- a/nixos/modules/services/networking/syncthing.nix
+++ b/nixos/modules/services/networking/syncthing.nix
@@ -5,6 +5,57 @@ with lib;
let
cfg = config.services.syncthing;
defaultUser = "syncthing";
+
+ devices = mapAttrsToList (name: device: {
+ deviceID = device.id;
+ inherit (device) name addresses introducer;
+ }) cfg.declarative.devices;
+
+ folders = mapAttrsToList ( _: folder: {
+ inherit (folder) path id label type;
+ devices = map (device: { deviceId = cfg.declarative.devices.${device}.id; }) folder.devices;
+ rescanIntervalS = folder.rescanInterval;
+ fsWatcherEnabled = folder.watch;
+ fsWatcherDelayS = folder.watchDelay;
+ ignorePerms = folder.ignorePerms;
+ }) cfg.declarative.folders;
+
+ # get the api key by parsing the config.xml
+ getApiKey = pkgs.writers.writeDash "getAPIKey" ''
+ ${pkgs.libxml2}/bin/xmllint \
+ --xpath 'string(configuration/gui/apikey)'\
+ ${cfg.configDir}/config.xml
+ '';
+
+ updateConfig = pkgs.writers.writeDash "merge-syncthing-config" ''
+ set -efu
+ # wait for syncthing port to open
+ until ${pkgs.curl}/bin/curl -Ss ${cfg.guiAddress} -o /dev/null; do
+ sleep 1
+ done
+
+ API_KEY=$(${getApiKey})
+ OLD_CFG=$(${pkgs.curl}/bin/curl -Ss \
+ -H "X-API-Key: $API_KEY" \
+ ${cfg.guiAddress}/rest/system/config)
+
+ # generate the new config by merging with the nixos config options
+ NEW_CFG=$(echo "$OLD_CFG" | ${pkgs.jq}/bin/jq -s '.[] as $in | $in * {
+ "devices": (${builtins.toJSON devices}${optionalString (! cfg.declarative.overrideDevices) " + $in.devices"}),
+ "folders": (${builtins.toJSON folders}${optionalString (! cfg.declarative.overrideFolders) " + $in.folders"})
+ }')
+
+ # POST the new config to syncthing
+ echo "$NEW_CFG" | ${pkgs.curl}/bin/curl -Ss \
+ -H "X-API-Key: $API_KEY" \
+ ${cfg.guiAddress}/rest/system/config -d @-
+
+ # restart syncthing after sending the new config
+ ${pkgs.curl}/bin/curl -Ss \
+ -H "X-API-Key: $API_KEY" \
+ -X POST \
+ ${cfg.guiAddress}/rest/system/restart
+ '';
in {
###### interface
options = {
@@ -16,6 +67,187 @@ in {
available on http://127.0.0.1:8384/.
'';
+ declarative = {
+ cert = mkOption {
+ type = types.nullOr types.str;
+ default = null;
+ description = ''
+ Path to users cert.pem file, will be copied into the syncthing's
+ configDir
+ '';
+ };
+
+ key = mkOption {
+ type = types.nullOr types.str;
+ default = null;
+ description = ''
+ Path to users key.pem file, will be copied into the syncthing's
+ configDir
+ '';
+ };
+
+ overrideDevices = mkOption {
+ type = types.bool;
+ default = true;
+ description = ''
+ Whether to delete the devices which are not configured via the
+ declarative.devices option.
+ If set to false, devices added via the webinterface will
+ persist but will have to be deleted manually.
+ '';
+ };
+
+ devices = mkOption {
+ default = {};
+ description = ''
+ Peers/devices which syncthing should communicate with.
+ '';
+ example = [
+ {
+ name = "bigbox";
+ id = "7CFNTQM-IMTJBHJ-3UWRDIU-ZGQJFR6-VCXZ3NB-XUH3KZO-N52ITXR-LAIYUAU";
+ addresses = [ "tcp://192.168.0.10:51820" ];
+ }
+ ];
+ type = types.attrsOf (types.submodule ({ config, ... }: {
+ options = {
+
+ name = mkOption {
+ type = types.str;
+ default = config._module.args.name;
+ description = ''
+ Name of the device
+ '';
+ };
+
+ addresses = mkOption {
+ type = types.listOf types.str;
+ default = [];
+ description = ''
+ The addresses used to connect to the device.
+ If this is let empty, dynamic configuration is attempted
+ '';
+ };
+
+ id = mkOption {
+ type = types.str;
+ description = ''
+ The id of the other peer, this is mandatory. It's documented at
+ https://docs.syncthing.net/dev/device-ids.html
+ '';
+ };
+
+ introducer = mkOption {
+ type = types.bool;
+ default = false;
+ description = ''
+ If the device should act as an introducer and be allowed
+ to add folders on this computer.
+ '';
+ };
+
+ };
+ }));
+ };
+
+ overrideFolders = mkOption {
+ type = types.bool;
+ default = true;
+ description = ''
+ Whether to delete the folders which are not configured via the
+ declarative.folders option.
+ If set to false, folders added via the webinterface will persist
+ but will have to be deleted manually.
+ '';
+ };
+
+ folders = mkOption {
+ default = {};
+ description = ''
+ folders which should be shared by syncthing.
+ '';
+ type = types.attrsOf (types.submodule ({ config, ... }: {
+ options = {
+
+ path = mkOption {
+ type = types.str;
+ default = config._module.args.name;
+ description = ''
+ The path to the folder which should be shared.
+ '';
+ };
+
+ id = mkOption {
+ type = types.str;
+ default = config._module.args.name;
+ description = ''
+ The id of the folder. Must be the same on all devices.
+ '';
+ };
+
+ label = mkOption {
+ type = types.str;
+ default = config._module.args.name;
+ description = ''
+ The label of the folder.
+ '';
+ };
+
+ devices = mkOption {
+ type = types.listOf types.str;
+ default = [];
+ description = ''
+ The devices this folder should be shared with. Must be defined
+ in the declarative.devices attribute.
+ '';
+ };
+
+ rescanInterval = mkOption {
+ type = types.int;
+ default = 3600;
+ description = ''
+ How often the folders should be rescaned for changes.
+ '';
+ };
+
+ type = mkOption {
+ type = types.enum [ "sendreceive" "sendonly" "receiveonly" ];
+ default = "sendreceive";
+ description = ''
+ Whether to send only changes from this folder, only receive them
+ or propagate both.
+ '';
+ };
+
+ watch = mkOption {
+ type = types.bool;
+ default = true;
+ description = ''
+ Whether the folder should be watched for changes by inotify.
+ '';
+ };
+
+ watchDelay = mkOption {
+ type = types.int;
+ default = 10;
+ description = ''
+ The delay after an inotify event is triggered.
+ '';
+ };
+
+ ignorePerms = mkOption {
+ type = types.bool;
+ default = true;
+ description = ''
+ Whether to propagate permission changes.
+ '';
+ };
+
+ };
+ }));
+ };
+ };
+
guiAddress = mkOption {
type = types.str;
default = "127.0.0.1:8384";
@@ -151,6 +383,23 @@ in {
RestartForceExitStatus="3 4";
User = cfg.user;
Group = cfg.group;
+ ExecStartPre = mkIf (cfg.declarative.cert != null || cfg.declarative.key != null)
+ "+${pkgs.writers.writeBash "syncthing-copy-keys" ''
+ mkdir -p ${cfg.configDir}
+ chown ${cfg.user}:${cfg.group} ${cfg.configDir}
+ chmod 700 ${cfg.configDir}
+ ${optionalString (cfg.declarative.cert != null) ''
+ cp ${toString cfg.declarative.cert} ${cfg.configDir}/cert.pem
+ chown ${cfg.user}:${cfg.group} ${cfg.configDir}/cert.pem
+ chmod 400 ${cfg.configDir}/cert.pem
+ ''}
+ ${optionalString (cfg.declarative.key != null) ''
+ cp ${toString cfg.declarative.key} ${cfg.configDir}/key.pem
+ chown ${cfg.user}:${cfg.group} ${cfg.configDir}/key.pem
+ chmod 400 ${cfg.configDir}/key.pem
+ ''}
+ ''}"
+ ;
ExecStart = ''
${cfg.package}/bin/syncthing \
-no-browser \
@@ -159,6 +408,17 @@ in {
'';
};
};
+ syncthing-init = {
+ after = [ "syncthing.service" ];
+ wantedBy = [ "multi-user.target" ];
+
+ serviceConfig = {
+ User = cfg.user;
+ RemainAfterExit = true;
+ Type = "oneshot";
+ ExecStart = updateConfig;
+ };
+ };
syncthing-resume = {
wantedBy = [ "suspend.target" ];
diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index c31d9d78da6..5be7c4292e5 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -231,6 +231,7 @@ in
strongswan-swanctl = handleTest ./strongswan-swanctl.nix {};
sudo = handleTest ./sudo.nix {};
switchTest = handleTest ./switch-test.nix {};
+ syncthing-init = handleTest ./syncthing-init.nix {};
syncthing-relay = handleTest ./syncthing-relay.nix {};
systemd = handleTest ./systemd.nix {};
systemd-confinement = handleTest ./systemd-confinement.nix {};
diff --git a/nixos/tests/syncthing-init.nix b/nixos/tests/syncthing-init.nix
new file mode 100644
index 00000000000..811a466ff94
--- /dev/null
+++ b/nixos/tests/syncthing-init.nix
@@ -0,0 +1,30 @@
+import ./make-test.nix ({ lib, pkgs, ... }: let
+
+ testId = "7CFNTQM-IMTJBHJ-3UWRDIU-ZGQJFR6-VCXZ3NB-XUH3KZO-N52ITXR-LAIYUAU";
+
+in {
+ name = "syncthing-init";
+ meta.maintainers = with pkgs.stdenv.lib.maintainers; [ lassulus ];
+
+ machine = {
+ services.syncthing = {
+ enable = true;
+ declarative = {
+ devices.testDevice = {
+ id = testId;
+ };
+ folders.testFolder = {
+ path = "/tmp/test";
+ devices = [ "testDevice" ];
+ };
+ };
+ };
+ };
+
+ testScript = ''
+ $machine->waitForUnit("syncthing-init.service");
+ $machine->succeed("cat /var/lib/syncthing/config.xml") =~ /${testId}/ or die;
+ $machine->succeed("cat /var/lib/syncthing/config.xml") =~ /testFolder/ or die;
+ '';
+})
+