WIP: init buskerud/salsa

base.nix

@@ -73,7 +73,6 @@
 
   # Trusted users on the nix builder machines
   users.groups."nix-builder-users".name = "nix-builder-users";
-  users.motd = builtins.readFile ./misc/motd;
 
   services.openssh = {
     enable = true;

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1702569759,
-        "narHash": "sha256-Ze3AdEEsVZBRJ4wn13EZpV1Uubkzi59TkC4j2G9xoFI=",
+        "lastModified": 1709632354,
+        "narHash": "sha256-jxRHwqrtNze51WKFKvxlQ8Inf62UNRl5cFqEQ2V96vE=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "98ab91109716871f50ea8cb0e0ac7cc1e1e14714",
+        "rev": "0d11aa8d6431326e10b8656420f91085c3bd0b12",
         "type": "github"
       },
       "original": {
@@ -80,11 +80,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1702601832,
-        "narHash": "sha256-z+GyetKtwj7ZVZrRcI73N8Xy1B3JGAqDyPniBFRpIgo=",
+        "lastModified": 1709565521,
+        "narHash": "sha256-YP3H7Lm3IhOKHIcn+qMCLRINJG313Io5CjvNTJyrnhY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dff64d4ba6e9dc3f0a4ef8737f372a528d5bc8d1",
+        "rev": "9a5f1a573376eeb8c525f936eed32fabfb6e81be",
         "type": "github"
       },
       "original": {
@@ -110,27 +110,27 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1702148972,
-        "narHash": "sha256-h2jODFP6n+ABrUWcGRSVPRFfLOkM9TJ2pO+h+9JcaL0=",
+        "lastModified": 1709428628,
+        "narHash": "sha256-//ZCCnpVai/ShtO2vPjh3AWgo8riXCaret6V9s7Hew4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b8f33c044e51de6dde3ad80a9676945e0e4e3227",
+        "rev": "66d65cb00b82ffa04ee03347595aa20e41fe3555",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-23.05",
+        "ref": "release-23.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1702635820,
-        "narHash": "sha256-rClms9NTmSL/WIN5VmEccVhUExMkjCrRNswxU9QGNNo=",
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "02357adddd0889782362d999628de9d309d202dc",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
         "type": "github"
       },
       "original": {
@@ -179,11 +179,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1702177193,
-        "narHash": "sha256-J2409SyXROoUHYXVy9h4Pj0VU8ReLuy/mzBc9iK4DBg=",
+        "lastModified": 1709591996,
+        "narHash": "sha256-0sQcalXSgqlO6mnxBTXkSQChBHy2GQsokB1XY8r+LpQ=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "d806e546f96c88cd9f7d91c1c19ebc99ba6277d9",
+        "rev": "291aad29b59ceda517a06e59809f35cb0bb17c6b",
         "type": "github"
       },
       "original": {

flake.nix

@@ -123,12 +123,22 @@
     packages = {
       "x86_64-linux" = let
         pkgs = nixpkgs.legacyPackages."x86_64-linux";
+        pkgs-unstable = nixpkgs-unstable.legacyPackages."x86_64-linux";
       in rec {
         default = important-machines;
         important-machines = pkgs.linkFarm "important-machines"
           (nixlib.getAttrs importantMachines self.packages.x86_64-linux);
         all-machines = pkgs.linkFarm "all-machines"
           (nixlib.getAttrs allMachines self.packages.x86_64-linux);
+	heimdal = pkgs.callPackage hosts/buskerud/containers/salsa/services/heimdal/package.nix {
+          inherit (pkgs.apple_sdk.frameworks)
+            CoreFoundation Security SystemConfiguration;
+	};
+	heimdal-unstable = pkgs-unstable.callPackage hosts/buskerud/containers/salsa/services/heimdal/package.nix {
+          inherit (pkgs.apple_sdk.frameworks)
+            CoreFoundation Security SystemConfiguration;
+	};
+	inherit pkgs pkgs-unstable;
       } // nixlib.genAttrs allMachines
         (machine: self.nixosConfigurations.${machine}.config.system.build.toplevel);
     };

hosts/bekkalokk/services/gitea/gitea-import-users.py

@@ -32,6 +32,7 @@ def add_user(username, name):
             "full_name": name,
             "username": username,
             "login_name": username,
+            "visibility": "public",
             "source_id": 1,  # 1 = SMTP
     }
 

hosts/bikkje/configuration.nix

@@ -0,0 +1,44 @@
+{ config, pkgs, values, ... }:
+{
+    networking.nat = {
+    enable = true;
+    internalInterfaces = ["ve-+"];
+    externalInterface = "ens3";
+    # Lazy IPv6 connectivity for the container
+    enableIPv6 = true;
+  };
+
+  containers.bikkje = {
+    autoStart = true;
+    config = { config, pkgs, ... }: {
+      #import packages
+      packages = with pkgs; [
+          alpine
+          mutt
+          mutt-ics
+          mutt-wizard
+          weechat
+          weechatScripts.edit
+          hexchat
+          irssi
+          pidgin
+      ];
+
+      networking = {
+        firewall = {
+          enable = true;
+          # Allow SSH and HTTP and ports for email and irc
+          allowedTCPPorts = [ 80 22 194 994 6665 6666 6667 6668 6669 6697 995 993 25 465 587 110 143 993 995 ];
+          allowedUDPPorts = [ 80 22 194 994 6665 6666 6667 6668 6669 6697 995 993 25 465 587 110 143 993 995 ];
+        };
+        # Use systemd-resolved inside the container
+        # Workaround for bug https://github.com/NixOS/nixpkgs/issues/162686
+        useHostResolvConf = mkForce false;
+      };
+      
+      system.stateVersion = "23.11";
+      services.resolved.enable = true;
+    };
+  };
+
+};

hosts/buskerud/bikkje/default.nix

@@ -1,125 +0,0 @@
-{ config, pkgs, values, lib, ... }:
-{
-  containers.bikkje = {
-    autoStart = true;
-    interfaces = [ "enp4s0f0" ];
-
-    config = { config, pkgs, ... }: {
-      imports = [
-        ../../../modules/home-areas.nix
-        ./services/kerberos
-      ];
-
-      environment.systemPackages = with pkgs; [
-          zsh
-          bash
-          fish
-          tcsh
-
-          alpine
-          mutt
-          mutt-ics
-          mutt-wizard
-          notmuch
-          mailutils
-          procmail
-
-          irssi
-          weechat
-          weechatScripts.edit
-
-          coreutils-full
-          diffutils
-          findutils
-          ripgrep
-          cvs
-          gawk
-          git
-          gnupg
-          gnused
-          groff
-          less
-          p7zip
-          rcs
-          screen
-          tmux
-          tree
-          unzip
-          zip
-
-          emacs
-          helix
-          joe
-          micro
-          nano
-          neovim
-
-          autossh
-          inetutils
-          lynx
-          mosh
-          rsync
-          w3m
-
-          clang
-          gcc
-          guile
-          lua
-          perl
-          php
-          python3
-          (python3.withPackages (ps: with ps; [
-            numpy
-            sympy
-            scipy
-            requests
-            imageio
-            pillow
-            httpx
-            pycryptodome
-            pandas
-            matplotlib
-          ]))
-          ruby
-          tcl
-      ];
-
-      services.openssh = {
-        enable = true;
-        ports = [ 22 80 443 ];
-        openFirewall = true;
-        extraConfig = ''
-          PubkeyAcceptedAlgorithms=+ssh-rsa
-       '';
-
-        settings = {
-          GatewayPorts = "yes";
-          PermitRootLogin = "yes";
-        };
-      };
-
-      users.motd = builtins.readFile ../../../misc/motd;
-
-      networking = {
-        firewall.enable = true;
-        # Use systemd-resolved inside the container
-        # Workaround for bug https://github.com/NixOS/nixpkgs/issues/162686
-        useHostResolvConf = lib.mkForce false;
-        hostName = "bikkje";
-      };
-
-      systemd.network.enable = true;
-      systemd.network.networks."30-enp4s0f0" = values.defaultNetworkConfig // {
-        matchConfig.Name = "enp4s0f0";
-        address = with values.hosts.bikkje; [ (ipv4 + "/25") (ipv6 + "/64") ];
-      };
-      
-      system.stateVersion = "23.11";
-      services.resolved.enable = true;
-    };
-  };
-
-  # TODO
-  # - Kerberos Authentication
-  # - Mail Transfer Agent
-}

hosts/buskerud/bikkje/services/kerberos/default.nix

@@ -1,27 +0,0 @@
-{ config, pkgs, lib, ... }:
-{
-  #######################
-  # TODO: remove these once nixos 24.05 gets released
-  #######################
-  imports = [
-    ./krb5.nix
-    ./pam.nix
-  ];
-  disabledModules = [
-    "config/krb5/default.nix"
-    "security/pam.nix"
-  ];
-  #######################
-
-  security.krb5 = {
-    enable = true;
-    settings = {
-      libdefaults = {
-        default_realm = "PVV.NTNU.NO";
-        dns_lookup_realm = "yes";
-        dns_lookup_kdc = "yes";
-      };
-      realms."PVV.NTNU.NO".admin_server = "kdc.pvv.ntnu.no";
-    };
-  };
-}

hosts/buskerud/configuration.nix

@@ -5,7 +5,7 @@
     ../../base.nix
     ../../misc/metrics-exporters.nix
 
-    ./bikkje
+    ./containers/salsa/configuration.nix
   ];
 
   # buskerud does not support efi?

hosts/buskerud/containers/salsa/NOTES.md

@@ -0,0 +1,27 @@
+# Misc docs
+
+### Old stuff about storing kerberos state inside LDAP - might not be relevant
+
+- https://wiki.debian.org/LDAP/OpenLDAPSetup#OpenLDAP_as_a_Backend
+- https://ubuntu.com/server/docs/service-kerberos-with-openldap-backend
+- https://forums.freebsd.org/threads/heimdal-and-openldap-integration-some-questions.58422/
+- http://osr507doc.sco.com/cgi-bin/info2html?(heimdal.info.gz)Using%2520LDAP%2520to%2520store%2520the%2520database&lang=en
+- https://bbs.archlinux.org/viewtopic.php?id=54236
+- https://openldap-software.0penldap.narkive.com/Ml6seAGL/ldap-backend-for-heimdal-kerberos
+
+### Heimdal setup
+
+- http://chschneider.eu/linux/server/heimdal.shtml
+- https://github.com/NixOS/nixpkgs/blob/master/nixos/tests/kerberos/heimdal.nix
+- https://itk.samfundet.no/dok/Kerberos (possibly a bit dated)
+
+### OpenLDAP setup with new olc stuff
+
+- https://www.openldap.org/doc/admin26/
+- https://www.openldap.org/doc/admin26/sasl.html#GSSAPI
+- https://www.zytrax.com/books/ldap/
+
+### SASLAUTHD
+
+- https://linux.die.net/man/8/saslauthd
+- https://www.cyrusimap.org/sasl/index.html

hosts/buskerud/containers/salsa/configuration.nix

@@ -0,0 +1,51 @@
+{ config, pkgs, lib, inputs, values, ... }:
+{
+  containers.salsa = {
+    autoStart = true;
+    interfaces = [ "enp6s0f1" ];
+    bindMounts = {
+      "/data" = { hostPath = "/data/salsa"; isReadOnly = false; };
+    };
+    nixpkgs = inputs.nixpkgs-unstable;
+
+    config = { config, pkgs, ... }: let
+      inherit values inputs;
+    in {
+      imports = [
+        inputs.sops-nix.nixosModules.sops
+        ../../../../base.nix
+
+        ./services/heimdal
+        ./services/openldap.nix
+        ./services/saslauthd.nix
+
+	# https://github.com/NixOS/nixpkgs/pull/287611
+	./modules/krb5
+	./modules/kerberos
+      ];
+
+      disabledModules = [
+	"security/krb5"
+	"services/system/kerberos/default.nix"
+      ];
+
+      _module.args = {
+        inherit values inputs;
+      };
+
+      sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
+      sops.age.keyFile = "/var/lib/sops-nix/key.txt";
+      sops.age.generateKey = true;
+
+      # systemd.network.networks."30-enp6s0f1" = values.defaultNetworkConfig // {
+      #   matchConfig.Name = "enp6s0f1";
+      #   address = with values.hosts.jokum; [ (ipv4 + "/25") (ipv6 + "/64") ]
+      #     ++ (with values.services.turn; [ (ipv4 + "/25") (ipv6 + "/64") ]);
+      # };
+
+      networking.useHostResolvConf = lib.mkForce false;
+
+      system.stateVersion = "23.11";
+    };
+  };
+}

hosts/buskerud/containers/salsa/modules/kerberos/default.nix

@@ -0,0 +1,101 @@
+{ config, pkgs, lib, ... }:
+
+let
+  inherit (lib) mkOption types;
+  cfg = config.services.kerberos_server;
+  inherit (config.security.krb5) package;
+
+  format = import ../krb5/krb5-conf-format.nix { inherit pkgs lib; } { };
+in
+
+{
+  imports = [
+    (lib.mkRenamedOptionModule [ "services" "kerberos_server" "realms" ] [ "services" "kerberos_server" "settings" "realms" ])
+
+    ./mit.nix
+    ./heimdal.nix
+  ];
+
+  options = {
+    services.kerberos_server = {
+      enable = lib.mkEnableOption (lib.mdDoc "the kerberos authentication server");
+
+      settings = let
+        aclEntry = types.submodule {
+          options = {
+            principal = mkOption {
+              type = types.str;
+              description = lib.mdDoc "Which principal the rule applies to";
+            };
+            access = mkOption {
+              type = types.either
+                (types.listOf (types.enum ["add" "cpw" "delete" "get" "list" "modify"]))
+                (types.enum ["all"]);
+              default = "all";
+              description = lib.mdDoc "The changes the principal is allowed to make.";
+            };
+            target = mkOption {
+              type = types.str;
+              default = "*";
+              description = lib.mdDoc "The principals that 'access' applies to.";
+            };
+          };
+        };
+
+        realm = types.submodule ({ name, ... }: {
+          freeformType = format.sectionType;
+          options = {
+            acl = mkOption {
+              type = types.listOf aclEntry;
+              default = [
+                { principal = "*/admin"; access = "all"; }
+                { principal = "admin"; access = "all"; }
+              ];
+              description = lib.mdDoc ''
+                The privileges granted to a user.
+              '';
+            };
+          };
+        });
+      in mkOption {
+        type = types.submodule (format.type.getSubModules ++ [{
+          options = {
+            realms = mkOption {
+              type = types.attrsOf realm;
+              description = lib.mdDoc ''
+                The realm(s) to serve keys for.
+              '';
+            };
+          };
+        }]);
+        description = ''
+          Settings for the kerberos server of choice.
+
+          See the following documentation:
+          - Heimdal: {manpage}`kdc.conf(5)`
+          - MIT Kerberos: <https://web.mit.edu/kerberos/krb5-1.21/doc/admin/conf_files/kdc_conf.html>
+        '';
+        default = { };
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ package ];
+    assertions = [
+      {
+        assertion = cfg.settings.realms != { };
+        message = "The server needs at least one realm";
+      }
+      {
+        assertion = lib.length (lib.attrNames cfg.settings.realms) <= 1;
+        message = "Only one realm per server is currently supported.";
+      }
+    ];
+
+    systemd.slices.system-kerberos-server = { };
+    systemd.targets.kerberos-server = {
+      wantedBy = [ "multi-user.target" ];
+    };
+  };
+}

hosts/buskerud/containers/salsa/modules/kerberos/heimdal.nix

@@ -0,0 +1,87 @@
+{ pkgs, config, lib, ... } :
+
+let
+  inherit (lib)  mapAttrs;
+  cfg = config.services.kerberos_server;
+  package = config.security.krb5.package;
+
+  aclConfigs = lib.pipe cfg.settings.realms [
+    (mapAttrs (name: { acl, ... }: lib.concatMapStringsSep "\n" (
+      { principal, access, target, ... }:
+      "${principal}\t${lib.concatStringsSep "," (lib.toList access)}\t${target}"
+    ) acl))
+    (lib.mapAttrsToList (name: text:
+      {
+        dbname = "/var/lib/heimdal/heimdal";
+        acl_file = pkgs.writeText "${name}.acl" text;
+      }
+    ))
+  ];
+
+  finalConfig = cfg.settings // {
+    realms = mapAttrs (_: v: removeAttrs v [ "acl" ]) (cfg.settings.realms or { });
+    kdc = (cfg.settings.kdc or { }) // {
+      database = aclConfigs;
+    };
+  };
+
+  format = import ../krb5/krb5-conf-format.nix { inherit pkgs lib; } { };
+
+  kdcConfFile = format.generate "kdc.conf" finalConfig;
+in
+
+{
+  config = lib.mkIf (cfg.enable && package.passthru.implementation == "heimdal") {
+    environment.etc."heimdal-kdc/kdc.conf".source = kdcConfFile;
+
+    systemd.tmpfiles.settings."10-heimdal" = let
+      databases = lib.pipe finalConfig.kdc.database [
+        (map (dbAttrs: dbAttrs.dbname or null))
+        (lib.filter (x: x != null))
+        lib.unique
+      ];
+    in lib.genAttrs databases (_: {
+      d = {
+        user = "root";
+        group = "root";
+        mode = "0700";
+      };
+    });
+
+    systemd.services.kadmind = {
+      description = "Kerberos Administration Daemon";
+      partOf = [ "kerberos-server.target" ];
+      wantedBy = [ "kerberos-server.target" ];
+      serviceConfig = {
+        ExecStart = "${package}/libexec/kadmind --config-file=/etc/heimdal-kdc/kdc.conf";
+        Slice = "system-kerberos-server.slice";
+        StateDirectory = "heimdal";
+      };
+      restartTriggers = [ kdcConfFile ];
+    };
+
+    systemd.services.kdc = {
+      description = "Key Distribution Center daemon";
+      partOf = [ "kerberos-server.target" ];
+      wantedBy = [ "kerberos-server.target" ];
+      serviceConfig = {
+        ExecStart = "${package}/libexec/kdc --config-file=/etc/heimdal-kdc/kdc.conf";
+        Slice = "system-kerberos-server.slice";
+        StateDirectory = "heimdal";
+      };
+      restartTriggers = [ kdcConfFile ];
+    };
+
+    systemd.services.kpasswdd = {
+      description = "Kerberos Password Changing daemon";
+      partOf = [ "kerberos-server.target" ];
+      wantedBy = [ "kerberos-server.target" ];
+      serviceConfig = {
+        ExecStart = "${package}/libexec/kpasswdd";
+        Slice = "system-kerberos-server.slice";
+        StateDirectory = "heimdal";
+      };
+      restartTriggers = [ kdcConfFile ];
+    };
+  };
+}

hosts/buskerud/containers/salsa/modules/kerberos/mit.nix

@@ -0,0 +1,77 @@
+{ pkgs, config, lib, ... } :
+
+let
+  inherit (lib) mapAttrs;
+  cfg = config.services.kerberos_server;
+  package = config.security.krb5.package;
+  PIDFile = "/run/kdc.pid";
+
+  format = import ../krb5/krb5-conf-format.nix { inherit pkgs lib; } { };
+
+  aclMap = {
+    add = "a"; cpw = "c"; delete = "d"; get = "i"; list = "l"; modify = "m";
+    all = "*";
+  };
+
+  aclConfigs = lib.pipe cfg.settings.realms [
+    (mapAttrs (name: { acl, ... }: lib.concatMapStringsSep "\n" (
+      { principal, access, target, ... }: let
+        access_code = map (a: aclMap.${a}) (lib.toList access);
+      in "${principal} ${lib.concatStrings access_code} ${target}"
+    ) acl))
+
+    (lib.concatMapAttrs (name: text: {
+      ${name} = {
+        acl_file = pkgs.writeText "${name}.acl" text;
+      };
+    }))
+  ];
+
+  finalConfig = cfg.settings // {
+    realms = mapAttrs (n: v: (removeAttrs v [ "acl" ]) // aclConfigs.${n}) (cfg.settings.realms or { });
+  };
+
+  kdcConfFile = format.generate "kdc.conf" finalConfig;
+  env = {
+    # What Debian uses, could possibly link directly to Nix store?
+    KRB5_KDC_PROFILE = "/etc/krb5kdc/kdc.conf";
+  };
+in
+
+{
+  config = lib.mkIf (cfg.enable && package.passthru.implementation == "krb5") {
+    environment = {
+      etc."krb5kdc/kdc.conf".source = kdcConfFile;
+      variables = env;
+    };
+
+    systemd.services.kadmind = {
+      description = "Kerberos Administration Daemon";
+      partOf = [ "kerberos-server.target" ];
+      wantedBy = [ "kerberos-server.target" ];
+      serviceConfig = {
+        ExecStart = "${package}/bin/kadmind -nofork";
+        Slice = "system-kerberos-server.slice";
+        StateDirectory = "krb5kdc";
+      };
+      restartTriggers = [ kdcConfFile ];
+      environment = env;
+    };
+
+    systemd.services.kdc = {
+      description = "Key Distribution Center daemon";
+      partOf = [ "kerberos-server.target" ];
+      wantedBy = [ "kerberos-server.target" ];
+      serviceConfig = {
+        Type = "forking";
+        PIDFile = PIDFile;
+        ExecStart = "${package}/bin/krb5kdc -P ${PIDFile}";
+        Slice = "system-kerberos-server.slice";
+        StateDirectory = "krb5kdc";
+      };
+      restartTriggers = [ kdcConfFile ];
+      environment = env;
+    };
+  };
+}
+

hosts/buskerud/containers/salsa/modules/krb5/default.nix

@@ -77,8 +77,22 @@ in {
     };
   };
 
-  config = mkIf cfg.enable {
-    environment = {
+  config = {
+    assertions = mkIf (cfg.enable || config.services.kerberos_server.enable) [(let
+      implementation = cfg.package.passthru.implementation or "<NOT SET>";
+    in {
+      assertion = lib.elem implementation [ "krb5" "heimdal" ];
+      message = ''
+        `security.krb5.package` must be one of:
+
+          - krb5
+          - heimdal
+	
+	Currently chosen implementation: ${implementation}
+      '';
+    })];
+
+    environment = mkIf cfg.enable {
       systemPackages = [ cfg.package ];
       etc."krb5.conf".source = format.generate "krb5.conf" cfg.settings;
     };

hosts/buskerud/containers/salsa/modules/krb5/krb5-conf-format.nix

@@ -10,14 +10,19 @@ let
   inherit (lib.types) attrsOf bool coercedTo either int listOf oneOf path
     str submodule;
 in
-{ }: {
-  type = let
-    section = attrsOf relation;
-    relation = either (attrsOf value) value;
+{ }: rec {
+  sectionType = let
+    relation = oneOf [
+      (listOf (attrsOf value))
+      (attrsOf value)
+      value
+    ];
     value = either (listOf atom) atom;
     atom = oneOf [int str bool];
-  in submodule {
-    freeformType = attrsOf section;
+  in attrsOf relation;
+
+  type = submodule {
+    freeformType = attrsOf sectionType;
     options = {
       include = mkOption {
         default = [ ];
@@ -71,6 +76,9 @@ in
         ${name} = {
         ${indent (concatStringsSep "\n" (mapAttrsToList formatValue relation))}
         }''
+      else if isList relation
+      then
+        concatMapStringsSep "\n" (formatRelation name) relation
       else formatValue name relation;
 
     formatValue = name: value:

hosts/buskerud/containers/salsa/services/heimdal/default.nix

@@ -0,0 +1,78 @@
+{ config, pkgs, lib, ... }:
+let
+
+  realm = "PVV.NTNU.NO";
+
+  cfg = config.security.krb5;
+in
+{
+  security.krb5 = {
+    enable = true;
+
+    # NOTE: This has a small edit that moves an include header to $dev/include.
+    #       It is required in order to build smbk5pwd, because of some nested includes.
+    #       We should open an issue upstream (heimdal, not nixpkgs), but this patch
+    #       will do for now.
+    # package = pkgs.heimdal;
+    package = pkgs.callPackage ./package.nix {
+      inherit (pkgs.apple_sdk.frameworks)
+        CoreFoundation Security SystemConfiguration;
+    };
+
+    settings = {
+      logging.kdc = "CONSOLE";
+      realms.${realm} = {
+        admin_server = "localhost";
+        kdc = [ "localhost" ];
+      };
+
+      kadmin.default_keys = lib.concatStringsSep " " [
+        "aes256-cts-hmac-sha1-96:pw-salt"
+        "aes128-cts-hmac-sha1-96:pw-salt"
+      ];
+
+      libdefaults.default_etypes = lib.concatStringsSep " " [
+        "aes256-cts-hmac-sha1-96"
+        "aes128-cts-hmac-sha1-96"
+      ];
+
+      libdefaults = {
+        default_realm = realm;
+      };
+
+      domain_realm = {
+        "pvv.ntnu.no" = realm;
+        ".pvv.ntnu.no" = realm;
+      };
+    };
+  };
+
+  services.kerberos_server = {
+    enable = true;
+    settings = {
+      realms.${realm} = {
+        dbname = "/var/heimdal/heimdal";
+        mkey = "/var/heimdal/mkey";
+      };
+      # kadmin.default_keys = lib.concatStringsSep " " [
+      #   "aes256-cts-hmac-sha1-96:pw-salt"
+      #   "aes128-cts-hmac-sha1-96:pw-salt"
+      # ];
+
+      # libdefaults.default_etypes = lib.concatStringsSep " " [
+      #   "aes256-cts-hmac-sha1-96"
+      #   "aes128-cts-hmac-sha1-96"
+      # ];
+
+      # password_quality.min_length = 8;
+    };
+  };
+
+  # NOTE: These changes are part of nixpkgs-unstable, but not 23.11.
+  #       The package override needs these changes.
+  # systemd.services = {
+  #   kdc.serviceConfig.ExecStart =      lib.mkForce "${cfg.package}/libexec/kadmind --config-file=/etc/heimdal-kdc/kdc.conf";
+  #   kpasswdd.serviceConfig.ExecStart = lib.mkForce "${cfg.package}/libexec/kpasswdd";
+  #   kadmind.serviceConfig.ExecStart =  lib.mkForce "${cfg.package}/libexec/kdc --config-file=/etc/heimdal-kdc/kdc.conf";
+  # };
+}

hosts/buskerud/containers/salsa/services/heimdal/package.nix

@@ -0,0 +1,180 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, python3
+, perl
+, bison
+, flex
+, texinfo
+, perlPackages
+
+, openldap
+, libcap_ng
+, sqlite
+, openssl
+, db
+, libedit
+, pam
+, krb5
+, libmicrohttpd
+, cjson
+
+, CoreFoundation
+, Security
+, SystemConfiguration
+
+, curl
+, jdk
+, unzip
+, which
+
+, nixosTests
+
+, withCJSON ? true
+, withCapNG ? stdenv.isLinux
+# libmicrohttpd should theoretically work for darwin as well, but something is broken.
+# It affects tests check-bx509d and check-httpkadmind.
+, withMicroHTTPD ? stdenv.isLinux
+, withOpenLDAP ? true
+, withOpenLDAPAsHDBModule ? false
+, withOpenSSL ? true
+, withSQLite3 ? true
+}:
+
+assert lib.assertMsg (withOpenLDAPAsHDBModule -> withOpenLDAP) ''
+  OpenLDAP needs to be enabled in order to build the OpenLDAP HDB Module.
+'';
+
+stdenv.mkDerivation {
+  pname = "heimdal";
+  version = "7.8.0-unstable-2023-11-29";
+
+  src = fetchFromGitHub {
+    owner = "heimdal";
+    repo = "heimdal";
+    rev = "3253c49544eacb33d5ad2f6f919b0696e5aab794";
+    hash = "sha256-uljzQBzXrZCZjcIWfioqHN8YsbUUNy14Vo+A3vZIXzM=";
+  };
+
+  outputs = [ "out" "dev" "man" "info" ];
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    python3
+    perl
+    bison
+    flex
+    texinfo
+  ]
+  ++ (with perlPackages; [ JSON ]);
+
+  buildInputs = [ db libedit pam ]
+    ++ lib.optionals (stdenv.isDarwin) [ CoreFoundation Security SystemConfiguration ]
+    ++ lib.optionals (withCJSON) [ cjson ]
+    ++ lib.optionals (withCapNG) [ libcap_ng ]
+    ++ lib.optionals (withMicroHTTPD) [ libmicrohttpd ]
+    ++ lib.optionals (withOpenLDAP) [ openldap ]
+    ++ lib.optionals (withOpenSSL) [ openssl ]
+    ++ lib.optionals (withSQLite3) [ sqlite ];
+
+  doCheck = true;
+  nativeCheckInputs = [
+    curl
+    jdk
+    unzip
+    which
+  ];
+
+  configureFlags = [
+    "--with-libedit-include=${libedit.dev}/include"
+    "--with-libedit-lib=${libedit}/lib"
+    # "--with-berkeley-db-include=${db.dev}/include"
+    "--with-berkeley-db=${db}/lib"
+
+    "--without-x"
+    "--disable-afs-string-to-key"
+  ] ++ lib.optionals (withCapNG) [
+    "--with-capng"
+  ] ++ lib.optionals (withCJSON) [
+    "--with-cjson=${cjson}"
+  ] ++ lib.optionals (withOpenLDAP) [
+    "--with-openldap=${openldap.dev}"
+  ] ++ lib.optionals (withOpenLDAPAsHDBModule) [
+    "--enable-hdb-openldap-module"
+  ] ++ lib.optionals (withSQLite3) [
+    "--with-sqlite3=${sqlite.dev}"
+  ];
+
+  # (check-ldap) slapd resides within ${openldap}/libexec,
+  #              which is not part of $PATH by default.
+  # (check-ldap) prepending ${openldap}/bin to the path to avoid
+  #              using the default installation of openldap on unsandboxed darwin systems,
+  #              which does not support the new mdb backend at the moment (2024-01-13).
+  # (check-ldap) the bdb backend got deprecated in favour of mdb in openldap 2.5.0,
+  #              but the heimdal tests still seem to expect bdb as the openldap backend.
+  #              This might be fixed upstream in a future update.
+  patchPhase = ''
+    runHook prePatch
+
+    substituteInPlace tests/ldap/slapd-init.in \
+      --replace 'SCHEMA_PATHS="' 'SCHEMA_PATHS="${openldap}/etc/schema '
+    substituteInPlace tests/ldap/check-ldap.in \
+      --replace 'PATH=' 'PATH=${openldap}/libexec:${openldap}/bin:'
+    substituteInPlace tests/ldap/slapd.conf \
+      --replace 'database	bdb' 'database mdb'
+
+    runHook postPatch
+  '';
+
+  # (test_cc) heimdal uses librokens implementation of `secure_getenv` on darwin,
+  #           which expects either USER or LOGNAME to be set.
+  preCheck = lib.optionalString (stdenv.isDarwin) ''
+    export USER=nix-builder
+  '';
+
+  # We need to build hcrypt for applications like samba
+  postBuild = ''
+    (cd include/hcrypto; make -j $NIX_BUILD_CORES)
+    (cd lib/hcrypto; make -j $NIX_BUILD_CORES)
+  '';
+
+  postInstall = ''
+    # Install hcrypto
+    (cd include/hcrypto; make -j $NIX_BUILD_CORES install)
+    (cd lib/hcrypto; make -j $NIX_BUILD_CORES install)
+
+    mkdir -p $dev/bin
+    mv $out/bin/krb5-config $dev/bin/
+
+    # asn1 compilers, move them to $dev
+    mv $out/libexec/heimdal/* $dev/bin
+    rmdir $out/libexec/heimdal
+
+    cp include/heim_threads.h $dev/include
+
+    # compile_et is needed for cross-compiling this package and samba
+    mv lib/com_err/.libs/compile_et $dev/bin
+  '';
+
+  # Issues with hydra
+  #  In file included from hxtool.c:34:0:
+  #  hx_locl.h:67:25: fatal error: pkcs10_asn1.h: No such file or directory
+  #enableParallelBuilding = true;
+
+  passthru = {
+    implementation = "heimdal";
+    tests.nixos = nixosTests.kerberos.heimdal;
+  };
+
+  meta = with lib; {
+    homepage = "https://www.heimdal.software";
+    changelog = "https://github.com/heimdal/heimdal/releases";
+    description = "An implementation of Kerberos 5 (and some more stuff)";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ h7x4 ];
+  };
+}

hosts/buskerud/containers/salsa/services/heimdal/package2.nix

@@ -0,0 +1,178 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, python3
+, perl
+, bison
+, flex
+, texinfo
+, perlPackages
+
+, openldap
+, libcap_ng
+, sqlite
+, openssl
+, db
+, libedit
+, pam
+, krb5
+, libmicrohttpd
+, cjson
+
+, CoreFoundation
+, Security
+, SystemConfiguration
+
+, curl
+, jdk
+, unzip
+, which
+
+, nixosTests
+
+, withCJSON ? true
+, withCapNG ? stdenv.isLinux
+# libmicrohttpd should theoretically work for darwin as well, but something is broken.
+# It affects tests check-bx509d and check-httpkadmind.
+, withMicroHTTPD ? stdenv.isLinux
+, withOpenLDAP ? true
+, withOpenLDAPAsHDBModule ? false
+, withOpenSSL ? true
+, withSQLite3 ? true
+}:
+
+assert lib.assertMsg (withOpenLDAPAsHDBModule -> withOpenLDAP) ''
+  OpenLDAP needs to be enabled in order to build the OpenLDAP HDB Module.
+'';
+
+stdenv.mkDerivation {
+  pname = "heimdal";
+  version = "7.8.0-unstable-2023-11-29";
+
+  src = fetchFromGitHub {
+    owner = "heimdal";
+    repo = "heimdal";
+    rev = "3253c49544eacb33d5ad2f6f919b0696e5aab794";
+    hash = "sha256-uljzQBzXrZCZjcIWfioqHN8YsbUUNy14Vo+A3vZIXzM=";
+  };
+
+  outputs = [ "out" "dev" "man" "info" ];
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    python3
+    perl
+    bison
+    flex
+    texinfo
+  ]
+  ++ (with perlPackages; [ JSON ]);
+
+  buildInputs = [ db libedit pam ]
+    ++ lib.optionals (stdenv.isDarwin) [ CoreFoundation Security SystemConfiguration ]
+    ++ lib.optionals (withCJSON) [ cjson ]
+    ++ lib.optionals (withCapNG) [ libcap_ng ]
+    ++ lib.optionals (withMicroHTTPD) [ libmicrohttpd ]
+    ++ lib.optionals (withOpenLDAP) [ openldap ]
+    ++ lib.optionals (withOpenSSL) [ openssl ]
+    ++ lib.optionals (withSQLite3) [ sqlite ];
+
+  doCheck = true;
+  nativeCheckInputs = [
+    curl
+    jdk
+    unzip
+    which
+  ];
+
+  configureFlags = [
+    "--with-libedit-include=${libedit.dev}/include"
+    "--with-libedit-lib=${libedit}/lib"
+    "--with-berkeley-db-include=${db.dev}/include"
+    "--with-berkeley-db"
+
+    "--without-x"
+    "--disable-afs-string-to-key"
+  ] ++ lib.optionals (withCapNG) [
+    "--with-capng"
+  ] ++ lib.optionals (withCJSON) [
+    "--with-cjson=${cjson}"
+  ] ++ lib.optionals (withOpenLDAP) [
+    "--with-openldap=${openldap.dev}"
+  ] ++ lib.optionals (withOpenLDAPAsHDBModule) [
+    "--enable-hdb-openldap-module"
+  ] ++ lib.optionals (withSQLite3) [
+    "--with-sqlite3=${sqlite.dev}"
+  ];
+
+  # (check-ldap) slapd resides within ${openldap}/libexec,
+  #              which is not part of $PATH by default.
+  # (check-ldap) prepending ${openldap}/bin to the path to avoid
+  #              using the default installation of openldap on unsandboxed darwin systems,
+  #              which does not support the new mdb backend at the moment (2024-01-13).
+  # (check-ldap) the bdb backend got deprecated in favour of mdb in openldap 2.5.0,
+  #              but the heimdal tests still seem to expect bdb as the openldap backend.
+  #              This might be fixed upstream in a future update.
+  patchPhase = ''
+    runHook prePatch
+
+    substituteInPlace tests/ldap/slapd-init.in \
+      --replace 'SCHEMA_PATHS="' 'SCHEMA_PATHS="${openldap}/etc/schema '
+    substituteInPlace tests/ldap/check-ldap.in \
+      --replace 'PATH=' 'PATH=${openldap}/libexec:${openldap}/bin:'
+    substituteInPlace tests/ldap/slapd.conf \
+      --replace 'database	bdb' 'database mdb'
+
+    runHook postPatch
+  '';
+
+  # (test_cc) heimdal uses librokens implementation of `secure_getenv` on darwin,
+  #           which expects either USER or LOGNAME to be set.
+  preCheck = lib.optionalString (stdenv.isDarwin) ''
+    export USER=nix-builder
+  '';
+
+  # We need to build hcrypt for applications like samba
+  postBuild = ''
+    (cd include/hcrypto; make -j $NIX_BUILD_CORES)
+    (cd lib/hcrypto; make -j $NIX_BUILD_CORES)
+  '';
+
+  postInstall = ''
+    # Install hcrypto
+    (cd include/hcrypto; make -j $NIX_BUILD_CORES install)
+    (cd lib/hcrypto; make -j $NIX_BUILD_CORES install)
+
+    mkdir -p $dev/bin
+    mv $out/bin/krb5-config $dev/bin/
+
+    # asn1 compilers, move them to $dev
+    mv $out/libexec/heimdal/* $dev/bin
+    rmdir $out/libexec/heimdal
+
+    # compile_et is needed for cross-compiling this package and samba
+    mv lib/com_err/.libs/compile_et $dev/bin
+  '';
+
+  # Issues with hydra
+  #  In file included from hxtool.c:34:0:
+  #  hx_locl.h:67:25: fatal error: pkcs10_asn1.h: No such file or directory
+  #enableParallelBuilding = true;
+
+  passthru = {
+    implementation = "heimdal";
+    tests.nixos = nixosTests.kerberos.heimdal;
+  };
+
+  meta = with lib; {
+    homepage = "https://www.heimdal.software";
+    changelog = "https://github.com/heimdal/heimdal/releases";
+    description = "An implementation of Kerberos 5 (and some more stuff)";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ h7x4 ];
+  };
+}

hosts/buskerud/containers/salsa/services/openldap.nix

@@ -0,0 +1,115 @@
+{ config, pkgs, lib, ... }:
+{
+  services.openldap = let
+    dn = "dc=kerberos,dc=pvv,dc=ntnu,dc=no";
+    cfg = config.services.openldap;
+  in {
+    enable = true;
+
+    # NOTE: this is a custom build of openldap with support for
+    #       perl and kerberos.
+    package = pkgs.openldap.overrideAttrs (prev: {
+      # https://github.com/openldap/openldap/blob/master/configure
+      configureFlags = prev.configureFlags ++ [
+        # Connect to slapd via UNIX socket
+        "--enable-local"
+        # Cyrus SASL
+        "--enable-spasswd"
+        # Reverse hostname lookups
+        "--enable-rlookups"
+        # perl
+        "--enable-perl"
+      ];
+
+      buildInputs = prev.buildInputs ++ (with pkgs; [
+        perl
+        config.security.krb5.package
+      ]);
+
+      extraContribModules = prev.extraContribModules ++ [
+        # https://git.openldap.org/openldap/openldap/-/tree/master/contrib/slapd-modules
+        "smbk5pwd"
+      ];
+    });
+
+    settings = {
+      attrs = {
+        olcLogLevel = [ "stats" "config" "args" ];
+
+        # olcAuthzRegexp = ''
+        #   gidNumber=.*\\\+uidNumber=0,cn=peercred,cn=external,cn=auth
+        #         "uid=heimdal,${dn2}"
+        # '';
+
+        # olcSaslSecProps = "minssf=0";
+      };
+
+      children = {
+        "cn=schema".includes = let
+          # NOTE: needed for smbk5pwd.so module
+          # schemaToLdif = name: path: pkgs.runCommandNoCC name {
+          #   buildInputs = with pkgs; [ schema2ldif ];
+          # } ''
+          #   schema2ldif "${path}" > $out
+          # '';
+
+          # hdb-ldif = schemaToLdif "hdb.ldif" "${pkgs.heimdal.src}/lib/hdb/hdb.schema";
+          # samba-ldif = schemaToLdif "samba.ldif" "${pkgs.heimdal.src}/tests/ldap/samba.schema";
+        in [
+           "${cfg.package}/etc/schema/core.ldif"
+           "${cfg.package}/etc/schema/cosine.ldif"
+           "${cfg.package}/etc/schema/nis.ldif"
+           "${cfg.package}/etc/schema/inetorgperson.ldif"
+           # "${hdb-ldif}"
+           # "${samba-ldif}"
+        ];
+
+        # NOTE: installation of smbk5pwd.so module
+        #       https://git.openldap.org/openldap/openldap/-/tree/master/contrib/slapd-modules/smbk5pwd
+        # "cn=module{0}".attrs = {
+        #   objectClass = [ "olcModuleList" ];
+        #   olcModuleLoad = [ "${cfg.package}/lib/modules/smbk5pwd.so" ];
+        # };
+
+        # NOTE: activation of smbk5pwd.so module for {1}mdb
+        # "olcOverlay={0}smbk5pwd,olcDatabase={1}mdb".attrs = {
+        #   objectClass = [ "olcOverlayConfig" "olcSmbK5PwdConfig" ];
+        #   olcOverlay = "{0}smbk5pwd";
+        #   olcSmbK5PwdEnable = [ "krb5" "samba" ];
+        #   olcSmbK5PwdMustChange = toString (60 * 60 * 24 * 30);
+        # };
+
+        "olcDatabase={1}mdb".attrs = {
+          objectClass = [ "olcDatabaseConfig" "olcMdbConfig" ];
+
+          olcDatabase = "{1}mdb";
+
+          olcSuffix = dn;
+
+          # TODO: PW is supposed to be a secret, but it's probably fine for testing
+          olcRootDN = "cn=admin,${dn}";
+          olcRootPW.path = pkgs.writeText "olcRootPW" "pass";
+
+          olcDbDirectory = "/var/lib/openldap/test-db";
+          olcDbIndex = "objectClass eq";
+
+          olcAccess = [
+            ''{0}to attrs=userPassword,shadowLastChange
+                by dn.exact=cn=admin,${dn} write
+                by self write
+                by anonymous auth
+                by * none''
+
+            ''{1}to dn.base=""
+                by * read''
+
+            /* allow read on anything else */
+            # ''{2}to *
+            #     by cn=admin,${dn} write by dn.exact=gidNumber=0+uidNumber=0+cn=peercred,cn=external write
+            #     by * read''
+          ];
+        };
+      };
+    };
+  };
+}

hosts/buskerud/containers/salsa/services/saslauthd.nix

@@ -0,0 +1,14 @@
+{ ... }:
+{
+  # TODO: This is seemingly required for openldap to authenticate
+  #       against kerberos, but I have no idea how to configure it as
+  #       such. Does it need a keytab? There's a binary "testsaslauthd"
+  #       that follows with `pkgs.cyrus_sasl` that might be useful.
+  services.saslauthd = {
+    enable = true;
+    mechanism = "kerberos5";
+    # config = ''
+
+    # '';
+  };
+}

misc/motd

@@ -1,16 +0,0 @@
-		 ███████████  █████   █████ █████   █████
-		░░███░░░░░███░░███   ░░███ ░░███   ░░███
-		 ░███    ░███ ░███    ░███  ░███    ░███
-		 ░██████████  ░███    ░███  ░███    ░███
-		 ░███░░░░░░   ░░███   ███   ░░███   ███
-		 ░███          ░░░█████░     ░░░█████░
-		 █████           ░░███         ░░███
-		░░░░░             ░░░           ░░░
-
-================= EN ==================|================== NB =================
-Welcome to a PVV machine, life is good.|Velkommen til en PVV-maskin,
-                                       |livet er deilig.
-If you are confused, try pvv.ntnu.no or|Hvis du er forvirret prøv pvv.ntnu.no
-our discord server.                    |eller vår discord-server.
-More info at pvv.ntnu.no/kontakt/      |Mer info på pvv.ntnu.no/kontakt/
-===============================================================================

modules/home-areas.nix

@@ -1,20 +0,0 @@
-{ pkgs, lib, ... }:
-{
-  fileSystems = let
-    # See microbel:/etc/exports
-    homeMounts = (lib.listToAttrs (map
-      (l: lib.nameValuePair "/home/pvv/${l}" "homepvv${l}.pvv.ntnu.no:/export/home/pvv/${l}")
-      [ "a" "b" "c" "d"  "h" "i" "j" "k" "l" "m" "z" ]));
-  in { }
-  //
-  (lib.mapAttrs (_: device: {
-    inherit device;
-    fsType = "nfs";
-    options = [
-      "nfsvers=3"
-      "proto=tcp"
-      "nofail"
-      "_netdev"
-    ];
-  }) homeMounts);
-}

values.nix

@@ -56,10 +56,6 @@ in rec {
       ipv4 = pvv-ipv4 204;
       ipv6 = pvv-ipv6 "1:4f"; # Wtf øystein og daniel why
     };
-    bikkje = {
-      ipv4 = pvv-ipv4 216;
-      ipv6 = pvv-ipv6 216;
-    };
     buskerud = {
       ipv4 = pvv-ipv4 231;
       ipv6 = pvv-ipv6 231;