138 lines
4 KiB
Nix
138 lines
4 KiB
Nix
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.aria2;
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homeDir = "/var/lib/aria2";
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settingsDir = "${homeDir}";
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sessionFile = "${homeDir}/aria2.session";
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downloadDir = "${homeDir}/Downloads";
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rangesToStringList = map (x: builtins.toString x.from +"-"+ builtins.toString x.to);
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settingsFile = pkgs.writeText "aria2.conf"
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''
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dir=${cfg.downloadDir}
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listen-port=${concatStringsSep "," (rangesToStringList cfg.listenPortRange)}
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rpc-listen-port=${toString cfg.rpcListenPort}
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rpc-secret=${cfg.rpcSecret}
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'';
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in
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{
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options = {
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services.aria2 = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether or not to enable the headless Aria2 daemon service.
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Aria2 daemon can be controlled via the RPC interface using
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one of many WebUI (http://localhost:6800/ by default).
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Targets are downloaded to ${downloadDir} by default and are
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accessible to users in the "aria2" group.
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'';
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};
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openPorts = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Open the ports in the firewall. Defaults are:
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- UDP 6881-6999 for transfers
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- TCP 6800 for RPC
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'';
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};
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downloadDir = mkOption {
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type = types.string;
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default = "${downloadDir}";
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description = ''
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Directory to store downloaded files.
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'';
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};
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listenPortRange = mkOption {
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type = types.listOf types.attrs;
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default = [ { from = 6881; to = 6999; } ];
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description = ''
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Set UDP listening port range used by DHT(IPv4, IPv6) and UDP tracker.
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'';
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};
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rpcListenPort = mkOption {
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type = types.int;
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default = 6800;
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description = "Specify a port number for JSON-RPC/XML-RPC server to listen to. Possible Values: 1024-65535";
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};
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rpcSecret = mkOption {
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type = types.string;
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default = "aria2rpc";
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description = ''
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Set RPC secret authorization token.
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Read https://aria2.github.io/manual/en/html/aria2c.html#rpc-auth to know how this option value is used.
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'';
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};
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extraArguments = mkOption {
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type = types.string;
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example = "--rpc-secret=12345 --enable-rpc --rpc-listen-all";
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default = "";
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description = ''
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Additional arguments to be passed to Aria2.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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# Need to open ports for proper functioning
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networking.firewall = mkIf cfg.openPorts {
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allowedUDPPortRanges = config.services.aria2.listenPortRange;
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allowedTCPPorts = [ config.services.aria2.rpcListenPort ];
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};
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users.extraUsers.aria2 = {
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group = "aria2";
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uid = config.ids.uids.aria2;
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description = "aria2 user";
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home = homeDir;
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createHome = false;
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};
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users.extraGroups.aria2.gid = config.ids.gids.aria2;
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systemd.services.aria2 = {
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description = "aria2 Service";
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after = [ "local-fs.target" "network.target" ];
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wantedBy = [ "multi-user.target" ];
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preStart = ''
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mkdir -m 0770 -p "${homeDir}"
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chown aria2:aria2 "${homeDir}"
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if [[ ! -d "${config.services.aria2.downloadDir}" ]]
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then
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mkdir -m 0770 -p "${config.services.aria2.downloadDir}"
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chown aria2:aria2 "${config.services.aria2.downloadDir}"
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fi
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if [[ ! -e "${sessionFile}" ]]
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then
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touch "${sessionFile}"
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chown aria2:aria2 "${sessionFile}"
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fi
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cp -f "${settingsFile}" "${settingsDir}/aria2.conf"
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'';
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serviceConfig = {
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Restart = "on-abort";
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ExecStart = "${pkgs.aria2}/bin/aria2c --enable-rpc --conf-path=${settingsDir}/aria2.conf ${config.services.aria2.extraArguments} --save-session=${sessionFile}";
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ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
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User = "aria2";
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Group = "aria2";
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PermissionsStartOnly = true;
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};
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};
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};
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}
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