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136 lines
3.4 KiB
Nix
136 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.postsrsd;
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in {
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###### interface
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options = {
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services.postsrsd = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the postsrsd SRS server for Postfix.";
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};
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secretsFile = mkOption {
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type = types.path;
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default = "/var/lib/postsrsd/postsrsd.secret";
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description = "Secret keys used for signing and verification";
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};
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domain = mkOption {
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type = types.str;
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description = "Domain name for rewrite";
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};
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separator = mkOption {
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type = types.enum ["-" "=" "+"];
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default = "=";
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description = "First separator character in generated addresses";
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};
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# bindAddress = mkOption { # uncomment once 1.5 is released
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# type = types.str;
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# default = "127.0.0.1";
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# description = "Socket listen address";
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# };
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forwardPort = mkOption {
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type = types.int;
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default = 10001;
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description = "Port for the forward SRS lookup";
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};
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reversePort = mkOption {
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type = types.int;
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default = 10002;
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description = "Port for the reverse SRS lookup";
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};
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timeout = mkOption {
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type = types.int;
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default = 1800;
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description = "Timeout for idle client connections in seconds";
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};
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excludeDomains = mkOption {
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type = types.listOf types.str;
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default = [];
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description = "Origin domains to exclude from rewriting in addition to primary domain";
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};
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user = mkOption {
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type = types.str;
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default = "postsrsd";
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description = "User for the daemon";
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};
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group = mkOption {
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type = types.str;
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default = "postsrsd";
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description = "Group for the daemon";
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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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services.postsrsd.domain = mkDefault config.networking.hostName;
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users.users = optionalAttrs (cfg.user == "postsrsd") (singleton
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{ name = "postsrsd";
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group = cfg.group;
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uid = config.ids.uids.postsrsd;
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});
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users.groups = optionalAttrs (cfg.group == "postsrsd") (singleton
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{ name = "postsrsd";
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gid = config.ids.gids.postsrsd;
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});
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systemd.services.postsrsd = {
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description = "PostSRSd SRS rewriting server";
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after = [ "network.target" ];
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before = [ "postfix.service" ];
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wantedBy = [ "multi-user.target" ];
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path = [ pkgs.coreutils ];
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serviceConfig = {
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ExecStart = ''${pkgs.postsrsd}/sbin/postsrsd "-s${cfg.secretsFile}" "-d${cfg.domain}" -a${cfg.separator} -f${toString cfg.forwardPort} -r${toString cfg.reversePort} -t${toString cfg.timeout} "-X${concatStringsSep "," cfg.excludeDomains}"'';
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User = cfg.user;
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Group = cfg.group;
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PermissionsStartOnly = true;
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};
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preStart = ''
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if [ ! -e "${cfg.secretsFile}" ]; then
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echo "WARNING: secrets file not found, autogenerating!"
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DIR="$(dirname "${cfg.secretsFile}")"
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if [ ! -d "$DIR" ]; then
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mkdir -p -m750 "$DIR"
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chown "${cfg.user}:${cfg.group}" "$DIR"
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fi
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dd if=/dev/random bs=18 count=1 | base64 > "${cfg.secretsFile}"
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chmod 600 "${cfg.secretsFile}"
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fi
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chown "${cfg.user}:${cfg.group}" "${cfg.secretsFile}"
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'';
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};
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};
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}
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