summaryrefslogtreecommitdiff
path: root/ymir.nix
blob: 5dfa265e9a8977f7bec878cc0f8ffa2c3e32a062 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
{ config, pkgs, ... }:

let
  luaPam = pkgs.callPackage ./custom/luaPam.nix {};
  luaPosix = pkgs.callPackage ./custom/luaPosix.nix {};
  luaSha2 = pkgs.callPackage ./custom/luaSha2.nix {};
  prosodyAuth = pkgs.callPackage ./custom/prosody-auth.nix {};
  prosodyVirtHost = name: {
    enabled = true;
    domain = name;
    ssl = {
      key = "/var/lib/acme/yggdrasil.li/key.pem";
      cert = "/var/lib/acme/yggdrasil.li/fullchain.pem";
    };
  };
  myDomains = ["dirty-haskell.org" "www.dirty-haskell.org" "lists.dirty-haskell.org" "l.dirty-haskell.org"
               "files.141.li" "f.141.li" "ymir.141.li" "141.li" "www.141.li" "lists.141.li" "l.141.li"
               "ymir.xmpp.li" "xmpp.li" "www.xmpp.li" "lists.xmpp.li" "l.xmpp.li"
               "files.yggdrasil.li" "f.yggdrasil.li" "ymir.yggdrasil.li" "git.yggdrasil.li" "www.yggdrasil.li" "yggdrasil.li" "lists.yggdrasil.li" "l.yggdrasil.li"
               "files.praseodym.org" "f.praseodym.org" "ymir.praseodym.org" "praseodym.org" "www.praseodym.org" "lists.praseodym.org" "l.praseodym.org"
               "ymir.kleen.li" "kleen.li" "www.kleen.li"
               "ymir.nights.email" "nights.email" "www.nights.email"
              ];
in rec {
  imports =
    [
      ./ymir/hw.nix
      ./ymir/mlmmj-expose.nix
      ./custom/zsh.nix
      ./users.nix
      ./custom/tinc/def.nix
      ./custom/ymir-nginx.nix
      ./custom/uucp.nix
    ];

  boot.loader.grub = {
    enable = true;
    version = 2;
    device = "/dev/vda";
  };

  boot.kernel.sysctl = {
    "net.ipv4.tcp_keepalive_time" = 60;
    "net.ipv4.tcp_keepalive_intvl" = 10;
    "net.ipv4.tcp_keepalive_probes" = 6;
  };

  nixpkgs.config.packageOverrides = pkgs:
    rec {
      prosody = pkgs.callPackage ./customized/prosody.nix ({
          inherit (pkgs.lua51Packages) luasocket luaexpat luafilesystem luabitop luaevent luazlib;
          luasec = lua5_sec;
          lua5 = pkgs.lua5_1;
          communityModules = ["mod_carbons" "mod_reload_modules" "mod_csi" "mod_cloud_notify" "mod_csi_pump" "mod_smacks" "mod_track_muc_joins"];
          extraModules = [prosodyAuth];
          extraLibs = [luaPam luaPosix luaSha2];
        });
      lua5_sec = pkgs.lua5_sec.override { lua5 = pkgs.lua5_1; };
      uwsgi = pkgs.callPackage ./customized/uwsgi.nix {
        extraPlugins = {
          cgi = {
            name = "cgi";
            interpreter = pkgs.python3.interpreter;
            path = "plugins/cgi";
            inputs = [ pkgs.python3 ];
            install = ''
              ${pkgs.python3.executable} -m compileall $out/${pkgs.python3.sitePackages}/
              ${pkgs.python3.executable} -O -m compileall $out/${pkgs.python3.sitePackages}/
            '';
          };
        };
        plugins = [];
      };
      cgit = pkgs.stdenv.lib.overrideDerivation pkgs.cgit (oldAttrs : {
        buildInputs = oldAttrs.buildInputs ++ [
          pkgs.perl
          pkgs.python3
          pkgs.makeWrapper
        ];
        postInstall = let
          pythonEnv = pkgs.python3.buildEnv.override { extraLibs = with pkgs.python3Packages; [ pygments markdown ]; };
        in ''
          wrapProgram $out/lib/cgit/filters/syntax-highlighting.py --prefix PYTHONPATH ':' ${pythonEnv}/lib/*/site-packages
          tmpFile=$(mktemp)
          chmod +x $tmpFile
          echo "#!${pythonEnv}/bin/python3" >$tmpFile
          tail -n +2 $out/lib/cgit/filters/html-converters/md2html >>$tmpFile
          mv -v $tmpFile $out/lib/cgit/filters/html-converters/md2html
          wrapProgram $out/lib/cgit/filters/html-converters/md2html --prefix PYTHONPATH ':' ${pythonEnv}/lib/*/site-packages
          wrapProgram $out/lib/cgit/filters/html-converters/man2html --prefix PATH ':' ${pkgs.groff}/bin
        '';
      });
      push2bin = pkgs.writeScriptBin "push2bin" ''
        #!${pkgs.zsh}/bin/zsh

        PATH=${pkgs.coreutils}/bin:${pkgs.gawk}/bin

        baseDir=/srv/www/files
        baseUrl="https://f.141.li"

        tmpFile=$(mktemp "''${baseDir}/.upload.XXXXXXXXXX")

        function zshexit() { [[ -n "''${tmpFile}" && -e "''${tmpFile}" ]] && rm -f "''${tmpFile}" }

        prefix=$(tee "''${tmpFile}" | sha512sum | awk '{ print $1; }' | head -c 10)
        prefix=''${prefix:l}
        filename="$1"
 
        [[ -z "''${prefix}" || -z "''${filename}" ]] && exit 2
        [[ ! -f "''${tmpFile}" || $(stat -c '%s' "''${tmpFile}") == "0" ]] && exit 3
 
        mkdir -p "''${baseDir}/''${prefix}"
        mv "''${tmpFile}" "''${baseDir}/''${prefix}/''${filename}"
 
        chmod 755 "''${baseDir}/''${prefix}"
        chmod 644 "''${baseDir}/''${prefix}/''${filename}"
 
        printf "%s/%s/%s" "''${baseUrl}" "''${prefix}" "''${filename}"
      '';
    };

  environment.systemPackages = with pkgs; [
    git
    mosh
    rsync
    tmux
    zsh
    mlmmj
  ];

  networking = {
    hostName = "ymir";
    hostId = "1c5c994e";
    firewall = {
      enable = true;
      allowPing = true;
      allowedTCPPorts = [ 22 # ssh
                          25 # smtp
                          143 # imap
                          993 # imaps
                          5222 # xmpp.s2c
                          5269 # xmpp.s2s
                          655 # tinc.yggdrasil
                          656 # tinc.laeradhr
                          80 # http
                          443 # https
                          9418 # git
                          64738 # murmur
                          53 # DNS
                          6523 # Obby
                        ];
      allowedUDPPorts = [ 64738 # murmur
                          53 # DNS
                        ];
      allowedUDPPortRanges = [ { from = 60000; to = 61000; } # mosh
                             ];
    };
    enableIPv6 = true;
    defaultGateway6 = "fe80::1";
    interfaces."enp0s3" = {
      ipv6Address = "2a03:4000:6:d004::";
      ipv6PrefixLength = 64;
    };
    dnsExtensionMechanism = true;
    nameservers = [ "::1" "127.0.0.1" "10.141.1.1" "8.8.8.8" "8.8.4.4" ];
    domain = "niflheim.yggdrasil";
    search = [ "niflheim.yggdrasil" "yggdrasil" "asgard.yggdrasil" ];
  };

  users.extraUsers.root = let
    template = (import users/gkleen.nix);
    in {
        inherit (template) shell;
        openssh.authorizedKeys.keyFiles = template.openssh.authorizedKeys.keyFiles;
      };

  services.ntp = {
    enable = false;
  };

  # List services that you want to enable:

  services.openssh = {
    enable = true;
    passwordAuthentication = false;
    extraConfig = ''
      AllowGroups ssh
    '';
  };
  users.groups."ssh" = {
    members = ["gitolite" "uucp" "root"];
  };

  services.fcron = {
    enable = true;
    systab = ''
      %weekly,erroronlymail  * *   nix-collect-garbage --delete-older-than '7d'
    '';
  };

  users.groups."ssl" = {
    members = [ "prosody"
                "nginx"
                "postfix"
                "murmur"
                "infinoted"
              ];
  };

  services.timesyncd = {
    enable = true;
  };

  services.prosody = {
    enable = true;
    admins = [
               "gkleen@xmpp.li"
               "gkleen@praseodym.org"
               "gkleen@141.li"
               "gkleen@yggdrasil.li"
             ];
    allowRegistration = false;
    extraModules = [ "private"
                     "auth_custom"
                     "carbons"
                     "reload_modules"
                     "smacks"
                     "csi"
                     "csi_pump"
                     "cloud_notify"
                   ];
    extraConfig = ''
      reload_modules = { "group", "tls" }
      authentication="custom"
      custom_alias_file="/etc/prosody/aliases"
      custom_alias_secret_file="/etc/prosody/alias_secret"

      Component "alias.xmpp.li"
        Include "/etc/prosody/alias.xmpp.li.cfg.lua"

      Component "muc.xmpp.li" "muc"
        restrict_room_creation = true
        max_history_messages = 100
        name = "Multi-user chats"
    '';

    virtualHosts = builtins.listToAttrs (map (name: { inherit name; value = prosodyVirtHost name; })
      ["xmpp.li" "yggdrasil.li" "praseodym.org" "141.li" "nights.email"]);
  };
  security.pam.services."xmpp".text = ''
    auth requisite  pam_succeed_if.so user ingroup xmpp
    auth required   pam_unix.so audit
  '';
  users.groups."shadow" = {
    members = [ "prosody"
              ];
  };
  users.groups."xmpp" = {};
  system.activationScripts."shadow-perms" = ''
    chown root:shadow /etc/shadow
    chmod 0640 /etc/shadow
  '';

  services.customTinc.networks = ((import ./custom/tinc/yggdrasil.nix) {
    inherit (pkgs) stdenv nettools openresolv;
    name = "ymir";
    connect = false;
    useDNS = false;
    ipConf = {
      ip4 = [ { address = "10.141.5.1"; prefixLength = 16; } ];
    };
    })
    // ((import ./custom/tinc/laeradhr.nix) {
     inherit (pkgs) stdenv nettools openresolv;
    name = "ymir";
    connect = false;
    useDNS = false;
    ipConf = {
      ip4 = [ { address = "10.142.0.3"; prefixLength = 16; } ];
    };
    });

  users.extraUsers."nginx".extraGroups = ["uwsgi"];

  services.uwsgi = {
    enable = true;
    plugins = ["python3" "cgi"];
    instance = {
      type = "normal";
      processes = 1;
      threads = 8;
      chdir = "${pkgs.cgit}/cgit";
      cgi = "${pkgs.cgit}/cgit/cgit.cgi";
      socket = "/tmp/cgit.sock";
      chmod-socket = "660";
      chown-socket = "uwsgi:nginx";
    };
  };
  
  users.extraUsers."uwsgi".extraGroups = ["git"];

  environment.etc."cgitrc" = {
    enable = true;
    text = ''
      robots=noindex, nofollow
      virtual-root=/
      enable-git-config=1
      remove-suffix=1

      root-title=git.yggdrasil.li
      root-desc=

      enable-http-clone=1

      enable-commit-graph=1
      snapshots=tar tar.gz tar.bz2 tar.xz zip
      side-by-side-diffs=1

      source-filter=${pkgs.cgit}/lib/cgit/filters/syntax-highlighting.py
      about-filter=${pkgs.cgit}/lib/cgit/filters/about-formatting.sh

      readme=:README.md
      readme=:README.txt
      readme=:README
      readme=:readme.md
      readme=:readme.txt
      readme=:readme

      clone-prefix=git://git.yggdrasil.li http://git.yggdrasil.li

      strict-export=git-daemon-export-ok
      project-list=/srv/git/projects.list
      section-from-path=2
      scan-path=/srv/git/repositories
    '';
  };

  services.gitolite = {
    enable = true;
    adminPubkey = builtins.readFile (builtins.head (import ./users/gkleen.nix).openssh.authorizedKeys.keyFiles);
    dataDir = "/srv/git";
  };
  users.extraUsers."gitolite" = {
    group = "git";
  };

  services.gitDaemon = {
    enable = true;
    basePath = services.gitolite.dataDir + "/repositories";
  };

  services.postfix = {
    enable = true;
    hostname = "ymir.yggdrasil.li";
    recipientDelimiter = "+";
    setSendmail = true;
    postmasterAlias = ""; rootAlias = ""; extraAliases = "";
    virtual = ''
      blog@dirty-haskell.org dirty-haskell@lists.yggdrasil.li
      @nights.email some@nights.email
    '';
    #destination = ["yggdrasil.li" "ymir.yggdrasil.li" "praseodym.org" "ymir.praseodym.org" "141.li" "ymir.141.li" "xmpp.li" "ymir.xmpp.li" "dirty-haskell.org" "explainuxul.de" "www.explainuxul.de" "lmu.li" "www.lmu.li" "localhost.yggdrasil.li" "localhost"];
    destination = [''regexp:${pkgs.writeText "destination" ''
        /\.?yggdrasil\.li$/ ACCEPT
        /\.?praseodym\.org$/ ACCEPT
        /\.?141\.li$/ ACCEPT
        /\.?xmpp\.li$/ ACCEPT
        /\.?kleen\.li$/ ACCEPT
        /\.?dirty-haskell\.org$/ ACCEPT
        /\.?nights\.email$/ ACCEPT
        /\.?yggdrasil$/ ACCEPT
        /\.?localdomain$/ ACCEPT
        /^localhost$/ ACCEPT
        /\.?ymir$/ ACCEPT
      ''}''];
    sslCert = "/var/lib/acme/yggdrasil.li/fullchain.pem";
    sslKey = "/var/lib/acme/yggdrasil.li/key.pem";
    extraConfig = ''
      #the dh params
      smtpd_tls_dh1024_param_file = /etc/ssl/dhparam.pem
      smtpd_tls_dh512_param_file = /etc/ssl/dhparam.pem
      #enable ECDH
      smtpd_tls_eecdh_grade = strong
      #enabled SSL protocols, don't allow SSLv2 and SSLv3
      smtpd_tls_protocols= !SSLv2, !SSLv3
      smtpd_tls_mandatory_protocols= !SSLv2, !SSLv3
      #allowed ciphers for smtpd_tls_security_level=encrypt
      smtpd_tls_mandatory_ciphers = high
      #allowed ciphers for smtpd_tls_security_level=may
      #smtpd_tls_ciphers = high
      #enforce the server cipher preference
      tls_preempt_cipherlist = yes
      #disable following ciphers for smtpd_tls_security_level=encrypt
      smtpd_tls_mandatory_exclude_ciphers = aNULL, MD5 , DES, ADH, RC4, PSD, SRP, 3DES, eNULL
      #disable following ciphers for smtpd_tls_security_level=may
      #smtpd_tls_exclude_ciphers = aNULL, MD5 , DES, ADH, RC4, PSD, SRP, 3DES, eNULL
      #enable TLS logging to see the ciphers for inbound connections
      smtpd_tls_loglevel = 1
      #enable TLS logging to see the ciphers for outbound connections
      smtp_tls_loglevel = 1

      smtp_dns_support_level = dnssec
      smtp_tls_security_level = dane

      transport_maps = regexp:${pkgs.writeText "transport" ''
        /@(lists?|l)\./ mlmmj:
        /@subs?\.(lists?|l)\./ mlmmj-subs:
      ''} regexp:/srv/mail/transport pipemap:{texthash:/srv/mail/discard,static:{discard:}}

      local_recipient_maps = 

      luser_relay = gkleen+''${local}
      
      # 10 GiB
      message_size_limit = 10737418240
      # 10 GiB
      mailbox_size_limit = 10737418240

      mailbox_transport_maps = pipemap:{unix:passwd.byname, static:{lmtp:unix:private/dovecot-lmtp}}
      #mailbox_command = ${pkgs.dovecot}/libexec/dovecot/dovecot-lda -f "$SENDER" -a "$RECIPIENT"

      smtpd_sasl_type = dovecot
      smtpd_sasl_path = private/dovecot-auth

      smtpd_sasl_auth_enable = yes
      smtpd_sasl_security_options = noanonymous, noplaintext
      smtpd_sasl_tls_security_options = noanonymous
      smtpd_tls_auth_only = yes

      smtpd_delay_reject = yes
      smtpd_helo_required = yes
      smtpd_helo_restrictions = permit

      smtpd_recipient_restrictions =
        reject_unauth_pipelining,
        reject_non_fqdn_recipient,
        reject_unknown_recipient_domain,
        permit_mynetworks,
        permit_sasl_authenticated,
        reject_non_fqdn_helo_hostname,
        reject_invalid_helo_hostname,
        reject_unauth_destination,
        check_client_access regexp:${pkgs.writeText "spfpolicy" ''
          /(^|\.)tu-muenchen\.de$/ DUNNO
          /(^|\.)tum\.de$/ DUNNO
          /(^|\.)lmu\.de$/ DUNNO
          /(^|\.)uni-muenchen\.de$/ DUNNO
          /(^|\.)lrz\.de$/ DUNNO
          /(^|\.)badw-muenchen\.de$/ DUNNO
          /(^|\.)badw\.de$/ DUNNO
          /(^|\.)hm\.edu$/ DUNNO
          /(^|\.)hswt\.de$/ DUNNO
          /(^|\.)mhn\.de$/ DUNNO
          /(^|\.)mwn\.de$/ DUNNO
          /.*/ spfcheck
        ''}
      smtpd_restriction_classes = spfcheck
      spfcheck =
        check_policy_service unix:private/policy-spf

      smtpd_relay_restrictions =
        permit_mynetworks,
        permit_sasl_authenticated,
        reject_unauth_destination

      mlmmj_destination_recipient_limit = 1
      mlmmj-subs_destination_recipient_limit = 1
      policy-spf_time_limit = 3600s
      propagate_unmatched_extensions = canonical, virtual, alias

      milter_default_action = accept
      milter_protocol = 2
      smtpd_milters = local:private/dkim
      non_smtpd_milters = local:private/dkim

      alias_maps = texthash:${pkgs.writeText "aliases" ''
        postmaster gkleen
        webmaster gkleen
        abuse gkleen
        noc gkleen
        security gkleen
        hostmaster gkleen
        usenet gkleen
        news gkleen
        www gkleen
        uucp gkleen
        ftp gkleen
        root gkleen
      ''} texthash:/srv/mail/spm

      queue_run_delay = 10s
      minimal_backoff_time = 1m
      maximal_backoff_time = 10m
      maximal_queue_lifetime = 100m
      bounce_queue_lifetime = 20m

      sender_canonical_maps = tcp:localhost:10001
      sender_canonical_classes = envelope_sender
      recipient_canonical_maps = tcp:localhost:10002
      recipient_canonical_classes= envelope_recipient,header_recipient
    '';
    extraMasterConf = ''
      uucp            unix - n n - - pipe  flags=Fqhu user=uucp   argv=${config.security.wrapperDir}/uux -z -a $sender - $nexthop!rmail ($recipient)
      mlmmj           unix - n n - - pipe  flags=ORhu user=mlmmj  argv=${pkgs.mlmmj}/bin/mlmmj-receive -F -L /var/spool/lists/''${user}
      mlmmj-subs      unix - n n - - pipe  flags=ORhu user=mlmmj  argv=${pkgs.mlmmj-exposed}/bin/mlmmj-exposed /var/spool/lists/''${user} ''${extension}
      policy-spf      unix - n n - - spawn            user=nobody argv=${pkgs.pythonPackages.pypolicyd-spf}/bin/policyd-spf ${./ymir/spf.conf}
    '';
    networks = ["127.0.0.0/8" "[::ffff:127.0.0.0]/104" "[::1]/128" "10.141.0.0/16"];
  };

  services.postsrsd = {
    enable = true;
    domain = "srs.141.li";
    separator = "+";
    excludeDomains = [ ".yggdrasil.li" "yggdrasil.li"
                       ".praseodym.org" "praseodym.org"
                       ".141.li" "141.li"
                       ".xmpp.li" "xmpp.li"
                       ".kleen.li" "kleen.li"
                       ".nights.email" "nights.email"
                       ".lmu.li" "lmu.li"
                       ".dirty-haskell.org" "dirty-haskell.org"
                     ];
  };

  systemd.timers."mlmmj-maintd" = {
    description = "run mlmmj maintenance daemon";
    wantedBy = [ "multi-user.target" ];

    timerConfig = {
      OnStartupSec = "10m";
    };
  };

  systemd.services."mlmmj-maintd" = {
    description = "mlmmj maintenance daemon";

    serviceConfig = {
      User = "mlmmj";
      Group = "mlmmj";
      ExecStart = "${pkgs.mlmmj}/bin/mlmmj-maintd -F -d /var/spool/lists";
    };
  };

  services.opendkim = {
    enable = true;
    user = "postfix"; group = "postfix";
    socket = "local:/var/lib/postfix/queue/private/dkim";
    domains = ''csl:${pkgs.lib.concatStringsSep "," myDomains}'';
    keyFile = /var/lib/dkim/ymir.private;
    selector = "ymir";
    configFile = builtins.toFile "opendkim.conf" ''
      Syslog true
      MTACommand ${config.security.wrapperDir}/sendmail
      LogResults true
    '';
  };

  services.postgrey = {
    enable = true;
    socket = {
      path = "/var/lib/postfix/queue/private/policy-greylist";
      mode = "0777";
    };
    delay = 60;
    autoWhitelist = 1;
    maxAge = 7;
    retryWindow = 1;
  };

  services.dovecot2 = {
    enable = true;
    enableImap = true;
    enableLmtp = true;
    enablePop3 = false;
    enablePAM = true;
    sslServerCert = "/var/lib/acme/yggdrasil.li/fullchain.pem";
    sslServerKey = "/var/lib/acme/yggdrasil.li/key.pem";
    mailLocation = "maildir:~/mail:LAYOUT=index:UTF-8";
    extraConfig = ''
      mail_plugins = $mail_plugins quota
      mailbox_list_index = yes
      postmaster_address = postmaster@yggdrasil.li
      recipient_delimiter = +
      auth_username_format = %n

      service auth {
        unix_listener /var/lib/postfix/queue/private/dovecot-auth {
          mode = 0600
          user = postfix
          group = postfix
        }
      }

      service lmtp {
        unix_listener /var/lib/postfix/queue/private/dovecot-lmtp {
          mode = 0600
          user = postfix
          group = postfix
        }
      }

      namespace {
        separator = /
        inbox = yes
      }

      plugin {
        quota = maildir:User quota
        quota_rule = *:storage=1GB
        quota_rule2 = Trash:storage=+10%%
        quota_status_overquota = "552 5.2.2 Mailbox is full"
        quota_status_success = DUNNO
        quota_status_nouser = DUNNO
      }

      # service quota-status {
      #   executable = quota-status -p postfix
      #   unix_listener /var/lib/postfix/queue/private/policy-quota {
      #     mode = 0660
      #     user = postfix
      #     group = postfix
      #     # You can choose any port you want
      #   }
      #   client_limit = 1
      # }
    '';
  };
  security.pam.services.dovecot2.text = ''
    auth requisite  pam_succeed_if.so user ingroup mail
    auth required   pam_unix.so audit
    account sufficient pam_unix.so
  '';
  users.groups."mail" = {};

  users.extraUsers."mlmmj" = {
    isSystemUser = true;
    home = "/var/spool/lists";
    createHome = true;
    group = "mlmmj";
  };

  users.extraGroups."mlmmj" = {};

  users.extraGroups."mladmin" = {
    members = [ "gkleen" ];
  };
  
  users.extraGroups."infinoted" = {
    members = [ "infinoted" "gitolite" ];
  };

  security.sudo.extraConfig = ''
    %mladmin ALL=(mlmmj) NOPASSWD: ALL
    %infinoted ALL=(infinoted) NOPASSWD: ALL
  '';

  security.polkit = {
      enable = true;
      extraConfig = ''
        polkit.addRule(function(action, subject) {
          if (    action.id == "org.freedesktop.systemd1.manage-units"
               && action.lookup("unit") == "infinoted.service"
               && subject.isInGroup("infinoted")
             ) {
              return polkit.Result.YES;
          }
        });
      '';
    };

  security.wrappers = { "newgrp".source = "${pkgs.shadow}/bin/newgrp"; };

  security.acme = {
    certs = {
      "yggdrasil.li" = {
        allowKeysForGroup = true;
        group = "ssl";
        webroot = "/srv/www/acme/yggdrasil.li";
        email = "phikeebaogobaegh@141.li";
        extraDomains = builtins.listToAttrs (builtins.map (name: { inherit name; value = "/srv/www/acme/${name}"; }) myDomains);
        postRun = ''
          systemctl reload nginx.service
          ${pkgs.prosody}/bin/prosodyctl reload
        '';
      };
    };
  };

  services.uucp = {
    enable = true;
    nodeName = "ymir";
    remoteNodes = ["isaac" "hel"]; # legacy name for odin
    sshUser = {
      openssh.authorizedKeys.keys = [ ''no-port-forwarding,no-X11-forwarding,no-agent-forwarding,command="${config.security.wrapperDir}/uucico" ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEgtDHA7oDIaRwggGGznNaKZF68rFTziqefSCn1t9ZKe uucp@odin''
                                      ''no-port-forwarding,no-X11-forwarding,no-agent-forwarding,command="${config.security.wrapperDir}/uucico" ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOWBybBQKbPucqBgULQ1phv7IKFWl1Xc4drkCx3D5mIz uucp@hel''
                                    ];
    };
    sshConfig = ''
      Host isaac
        Hostname odin.asgard.yggdrasil
        IdentityFile ~/.ssh/odin
      Host hel
        Hostname hel.midgard.yggdrasil
        IdentityFile ~/.ssh/hel
    '';
    commandPath = ["${pkgs.rmail}/bin" "${pkgs.push2bin}/bin"];
    defaultCommands = ["rmail" "push2bin"];
    interval = "@mail(no) 1h";
  };

  services.atd = {
    enable = true;
  };

  users.groups."filebin" = {
    members = ["gkleen" "uucp"];
  };

  services.nsd = {
    enable = true;
    verbosity = 3;
    interfaces = [ "10.142.0.3" "188.68.51.254" "2a03:4000:6:d004::" ];
    ipTransparent = true;
    remoteControl = {
      enable = true;
    };
    zones = {
      "inwx" = {
        notify = [ "217.70.142.96 NOKEY"
                 ];
        provideXFR = [ "217.70.142.96 NOKEY"
                     ];
        outgoingInterface = "188.68.51.254";
        children = (import ./ymir/zones/index.nix { inherit (pkgs) lib; });
      };
    };
  };

  services.unbound = {
    enable = true;
    allowedAccess = ["127.0.0.0/8" "::ffff:127.0.0.0/104" "::1/128" "10.141.0.0/16"];
    interfaces = ["127.0.0.1" "::1" "10.141.5.1"];
    extraConfig = ''
      verbosity: 1
    
      private-domain: "yggdrasil"
    
      domain-insecure: "10.in-addr.arpa"
      domain-insecure: "yggdrasil"

      local-zone: "10.in-addr.arpa" nodefault

      forward-zone:
        name: "10.in-addr.arpa"
        forward-addr: 10.141.1.1
      forward-zone:
        name: "yggdrasil"
        forward-addr: 10.141.1.1
    '';
  };

  services.infinoted = {
    enable = true;
    keyFile = "/var/lib/acme/yggdrasil.li/key.pem";
    certificateFile = "/var/lib/acme/yggdrasil.li/fullchain.pem";
    plugins = [ "note-text" "note-chat" "logging" "autosave" "certificate-auth" "directory-sync" ];
    extraConfig = ''
      [certificate-auth]
      ca-list=/var/lib/infinoted/ca.cert.pem
      ca-key=/var/lib/infinoted/ca.key.pem
      accept-unauthenticated-clients=true

      [autosave]
      interval=5

      [directory-sync]
      directory=/var/lib/infinoted/dirsync
      interval=5
      hook=/var/lib/infinoted/git-sync.sh
    '';
  };

  users.extraUsers."infinoted" = {
    home = "/var/lib/infinoted";
    createHome = true;
  };

  services.haveged = {
    enable = true;
  };
}