forked from mirrors/nixpkgs
103 lines
3.3 KiB
Nix
103 lines
3.3 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.nzbget;
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nzbget = pkgs.nzbget; in {
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options = {
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services.nzbget = {
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enable = mkEnableOption "NZBGet";
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package = mkOption {
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type = types.package;
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default = pkgs.nzbget;
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defaultText = "pkgs.nzbget";
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description = "The NZBGet package to use";
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};
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user = mkOption {
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type = types.str;
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default = "nzbget";
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description = "User account under which NZBGet runs";
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};
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group = mkOption {
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type = types.str;
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default = "nzbget";
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description = "Group under which NZBGet runs";
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};
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};
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};
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config = mkIf cfg.enable {
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systemd.services.nzbget = {
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description = "NZBGet Daemon";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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path = with pkgs; [
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unrar
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p7zip
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];
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preStart = ''
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datadir=/var/lib/nzbget
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cfgtemplate=${cfg.package}/share/nzbget/nzbget.conf
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test -d $datadir || {
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echo "Creating nzbget data directory in $datadir"
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mkdir -p $datadir
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}
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test -f $configfile || {
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echo "nzbget.conf not found. Copying default config $cfgtemplate to $configfile"
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cp $cfgtemplate $configfile
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echo "Setting $configfile permissions to 0700 (needs to be written and contains plaintext credentials)"
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chmod 0700 $configfile
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echo "Setting temporary \$MAINDIR variable in default config required in order to allow nzbget to complete initial start"
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echo "Remember to change this to a proper value once NZBGet startup has been completed"
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sed -i -e 's/MainDir=.*/MainDir=\/tmp/g' $configfile
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}
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echo "Ensuring proper ownership of $datadir (${cfg.user}:${cfg.group})."
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chown -R ${cfg.user}:${cfg.group} $datadir
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'';
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script = ''
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configfile=/var/lib/nzbget/nzbget.conf
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args="--daemon --configfile $configfile"
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# The script in preStart (above) copies nzbget's config template to datadir on first run, containing paths that point to the nzbget derivation installed at the time.
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# These paths break when nzbget is upgraded & the original derivation is garbage collected. If such broken paths are found in the config file, override them to point to
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# the currently installed nzbget derivation.
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cfgfallback () {
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local hit=`grep -Po "(?<=^$1=).*+" "$configfile" | sed 's/[ \t]*$//'` # Strip trailing whitespace
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( test $hit && test -e $hit ) || {
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echo "In $configfile, valid $1 not found; falling back to $1=$2"
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args+=" -o $1=$2"
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}
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}
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cfgfallback ConfigTemplate ${cfg.package}/share/nzbget/nzbget.conf
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cfgfallback WebDir ${cfg.package}/share/nzbget/webui
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${cfg.package}/bin/nzbget $args
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'';
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serviceConfig = {
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Type = "forking";
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User = cfg.user;
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Group = cfg.group;
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PermissionsStartOnly = "true";
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Restart = "on-failure";
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};
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};
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users.extraUsers = mkIf (cfg.user == "nzbget") {
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nzbget = {
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group = cfg.group;
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uid = config.ids.uids.nzbget;
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};
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};
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users.extraGroups = mkIf (cfg.group == "nzbget") {
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nzbget = {
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gid = config.ids.gids.nzbget;
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};
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};
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};
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}
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