131 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			131 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.services.mlmmj;
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  stateDir = "/var/lib/mlmmj";
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  spoolDir = "/var/spool/mlmmj";
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  listDir = domain: list: "${spoolDir}/${domain}/${list}";
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  listCtl = domain: list: "${listDir domain list}/control";
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  transport = domain: list: "${domain}--${list}@local.list.mlmmj mlmmj:${domain}/${list}";
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  virtual = domain: list: "${list}@${domain} ${domain}--${list}@local.list.mlmmj";
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  alias = domain: list: "${list}: \"|${pkgs.mlmmj}/bin/mlmmj-receive -L ${listDir domain list}/\"";
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  subjectPrefix = list: "[${list}]";
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  listAddress = domain: list: "${list}@${domain}";
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  customHeaders = domain: list: [ "List-Id: ${list}" "Reply-To: ${list}@${domain}" ];
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  footer = domain: list: "To unsubscribe send a mail to ${list}+unsubscribe@${domain}";
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  createList = d: l: ''
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    ${pkgs.coreutils}/bin/mkdir -p ${listCtl d l}
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    echo ${listAddress d l} > ${listCtl d l}/listadress
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    echo "${lib.concatStringsSep "\n" (customHeaders d l)}" > ${listCtl d l}/customheaders
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    echo ${footer d l} > ${listCtl d l}/footer
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    echo ${subjectPrefix l} > ${listCtl d l}/prefix
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  '';
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in
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{
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  ###### interface
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  options = {
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    services.mlmmj = {
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      enable = mkOption {
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        type = types.bool;
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        default = false;
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        description = "Enable mlmmj";
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      };
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      user = mkOption {
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        type = types.str;
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        default = "mlmmj";
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        description = "mailinglist local user";
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      };
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      group = mkOption {
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        type = types.str;
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        default = "mlmmj";
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        description = "mailinglist local group";
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      };
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      listDomain = mkOption {
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        type = types.str;
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        default = "localhost";
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        description = "Set the mailing list domain";
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      };
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      mailLists = mkOption {
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        type = types.listOf types.str;
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        default = [];
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        description = "The collection of hosted maillists";
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      };
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    };
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  };
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  ###### implementation
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  config = mkIf cfg.enable {
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    users.extraUsers = singleton {
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      name = cfg.user;
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      description = "mlmmj user";
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      home = stateDir;
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      createHome = true;
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      uid = config.ids.uids.mlmmj;
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      group = cfg.group;
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      useDefaultShell = true;
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    };
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    users.extraGroups = singleton {
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      name = cfg.group;
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      gid = config.ids.gids.mlmmj;
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    };
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    services.postfix = {
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      enable = true;
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      recipientDelimiter= "+";
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      extraMasterConf = ''
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        mlmmj unix - n n - - pipe flags=ORhu user=mlmmj argv=${pkgs.mlmmj}/bin/mlmmj-receive -F -L ${spoolDir}/$nexthop
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      '';
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      extraAliases = concatMapStrings (alias cfg.listDomain) cfg.mailLists;
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      extraConfig = ''
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        transport_maps = hash:${stateDir}/transports
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        virtual_alias_maps = hash:${stateDir}/virtuals
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        propagate_unmatched_extensions = virtual
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      '';
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    };
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    environment.systemPackages = [ pkgs.mlmmj ];
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    system.activationScripts.mlmmj = ''
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          ${pkgs.coreutils}/bin/mkdir -p ${stateDir} ${spoolDir}/${cfg.listDomain}
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          ${pkgs.coreutils}/bin/chown -R ${cfg.user}:${cfg.group} ${spoolDir}
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          ${lib.concatMapStrings (createList cfg.listDomain) cfg.mailLists}
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          echo ${lib.concatMapStrings (virtual cfg.listDomain) cfg.mailLists} > ${stateDir}/virtuals
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          echo ${lib.concatMapStrings (transport cfg.listDomain) cfg.mailLists} > ${stateDir}/transports
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          ${pkgs.postfix}/bin/postmap ${stateDir}/virtuals
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          ${pkgs.postfix}/bin/postmap ${stateDir}/transports
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      '';
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    systemd.services."mlmmj-maintd" = {
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      description = "mlmmj maintenance daemon";
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      wantedBy = [ "multi-user.target" ];
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      serviceConfig = {
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        User = cfg.user;
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        Group = cfg.group;
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        ExecStart = "${pkgs.mlmmj}/bin/mlmmj-maintd -F -d ${spoolDir}/${cfg.listDomain}";
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      };
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    };
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  };
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}
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