"rebase"

11 files changed, 261 insertions, 139 deletions

diff --git a/old/modules/lass/base.nix b/old/modules/lass/base.nix
index 3a8d879e..159372a2 100644
--- a/old/modules/lass/base.nix
+++ b/old/modules/lass/base.nix
@@ -3,6 +3,7 @@
 {
   imports = [
     ./sshkeys.nix
+    ./iptables
   ];
 
   nix.useChroot = true;
@@ -65,6 +66,10 @@
     '';
   };
 
+  security.setuidPrograms = [
+    "sendmail"
+  ];
+
   services.gitolite = {
     enable = true;
     dataDir = "/home/gitolite";
@@ -84,27 +89,41 @@
     RuntimeMaxUse=128M
   '';
 
-  networking.firewall = {
+  lass.iptables = {
     enable = true;
-
-    allowedTCPPorts = [
-      22
-    ];
-
-    extraCommands = ''
-      iptables -A INPUT -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
-      iptables -A INPUT -j ACCEPT -i lo
-      iptables -A INPUT -j ACCEPT -p icmp
-
-      #iptables -N Retiolum
-      iptables -A INPUT -j Retiolum -i retiolum
-      iptables -A Retiolum -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
-      iptables -A Retiolum -j REJECT -p tcp --reject-with tcp-reset
-      iptables -A Retiolum -j REJECT -p udp --reject-with icmp-port-unreachable
-      iptables -A Retiolum -j REJECT        --reject-with icmp-proto-unreachable
-      iptables -A Retiolum -j REJECT
-    '';
-
-    extraStopCommands = "iptables -F";
+    tables = {
+      filter.INPUT.policy = "DROP";
+      filter.FORWARD.policy = "DROP";
+      filter.INPUT.rules = [
+        { predicate = "-i lo"; target = "ACCEPT"; }
+        { predicate = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; }
+        { predicate = "-p icmp"; target = "ACCEPT"; }
+        { predicate = "-p tcp --dport 22"; target = "ACCEPT"; }
+      ];
+    };
   };
+
+  #Networking.firewall = {
+  #  enable = true;
+
+  #  allowedTCPPorts = [
+  #    22
+  #  ];
+
+  #  extraCommands = ''
+  #    iptables -A INPUT -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
+  #    iptables -A INPUT -j ACCEPT -i lo
+  #    #http://serverfault.com/questions/84963/why-not-block-icmp
+  #    iptables -A INPUT -j ACCEPT -p icmp
+
+  #    #TODO: fix Retiolum firewall
+  #    #iptables -N RETIOLUM
+  #    #iptables -A INPUT -j RETIOLUM -i retiolum
+  #    #iptables -A RETIOLUM -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
+  #    #iptables -A RETIOLUM -j REJECT -p tcp --reject-with tcp-reset
+  #    #iptables -A RETIOLUM -j REJECT -p udp --reject-with icmp-port-unreachable
+  #    #iptables -A RETIOLUM -j REJECT        --reject-with icmp-proto-unreachable
+  #    #iptables -A RETIOLUM -j REJECT
+  #  '';
+  #};
 }
diff --git a/old/modules/lass/desktop-base.nix b/old/modules/lass/desktop-base.nix
index 94184548..ee7a94bc 100644
--- a/old/modules/lass/desktop-base.nix
+++ b/old/modules/lass/desktop-base.nix
@@ -1,6 +1,8 @@
 { config, pkgs, ... }:
 
-{
+let
+  mainUser = config.users.extraUsers.mainUser;
+in {
   imports = [
     ./base.nix
   ];
@@ -34,4 +36,30 @@
     xlibs.fontschumachermisc
   ];
 
+  fonts.fonts = [
+    pkgs.xlibs.fontschumachermisc
+  ];
+
+  services.xserver = {
+    enable = true;
+
+    windowManager.xmonad.extraPackages = hspkgs: with hspkgs; [
+      X11-xshape
+    ];
+    windowManager.xmonad.enable = true;
+    windowManager.xmonad.enableContribAndExtras = true;
+    windowManager.default = "xmonad";
+    desktopManager.default = "none";
+    desktopManager.xterm.enable = false;
+    displayManager.slim.enable = true;
+    displayManager.auto.enable = true;
+    displayManager.auto.user = mainUser.name;
+
+    layout = "us,de";
+    xkbModel = "evdev";
+    xkbVariant = "altgr-intl,nodeadkeys";
+    xkbOptions = "grp:caps_toggle";
+
+  };
+
 }
diff --git a/old/modules/lass/iptables/config.nix b/old/modules/lass/iptables/config.nix
new file mode 100644
index 00000000..be521feb
--- /dev/null
+++ b/old/modules/lass/iptables/config.nix
@@ -0,0 +1,119 @@
+{ cfg, lib, pkgs, ... }:
+
+let
+  inherit (pkgs) writeScript writeText;
+  inherit (lib) concatMapStringsSep concatStringsSep attrNames unique fold any attrValues catAttrs filter flatten length hasAttr;
+
+#===== new api v4
+
+  #buildTable :: iptablesAttrSet` -> str
+  #todo: differentiate by iptables-version
+  buildTables = iptv: ts:
+    let
+      declareChain = t: cn:
+        #TODO: find out what to do whit these count numbers
+        ":${cn} ${t."${cn}".policy} [0:0]";
+
+      buildChain = tn: cn:
+      #"${concatStringsSep " " ((attrNames t."${cn}") ++ [cn])}";
+
+      #TODO: sort by precedence
+      #TODO: double check should be unneccessary, refactor!
+        if (hasAttr "rules" ts."${tn}"."${cn}") then
+          if (ts."${tn}"."${cn}".rules == null) then
+            ""
+          else
+            concatMapStringsSep "\n" (rule: "\n-A ${cn} ${rule}") ([]
+              ++ map buildRule ts."${tn}"."${cn}".rules
+            )
+        else
+          ""
+        ;
+
+
+      buildRule = rule:
+        #TODO implement rule validation-test here
+        #
+        #target:
+        #target needs to be an existing chain (in the same table) or ACCEPT, REJECT, DROP, LOG, QUEUE, RETURN
+
+        #predicate:
+        #maybe use iptables-test
+        #TODO: howto exit with evaluation error by shellscript?
+          #apperantly not possible from nix because evalatution wouldn't be deterministic.
+        "${rule.predicate} -j ${rule.target}";
+
+      buildTable = tn:
+        "*${tn}\n" +
+        concatStringsSep "\n" ([]
+          ++ map (declareChain ts."${tn}") (attrNames ts."${tn}")
+        ) +
+        #this looks dirty, find a better way to do this (maybe optionalString)
+        concatStringsSep "" ([]
+          ++ map (buildChain tn) (attrNames ts."${tn}")
+        ) +
+        "\nCOMMIT";
+    in
+      concatStringsSep "\n" ([]
+        ++ map buildTable (attrNames ts)
+      );
+
+#=====
+
+  rules4 = iptables-version:
+    let
+      #TODO: find out good defaults.
+      tables-defaults = {
+        nat.PREROUTING.policy = "ACCEPT";
+        nat.INPUT.policy = "ACCEPT";
+        nat.OUTPUT.policy = "ACCEPT";
+        nat.POSTROUTING.policy = "ACCEPT";
+        filter.INPUT.policy = "ACCEPT";
+        filter.FORWARD.policy = "ACCEPT";
+        filter.OUTPUT.policy = "ACCEPT";
+
+        #if someone specifies any other rules on this chain, the default rules get lost.
+        #is this wanted beahiviour or a bug?
+        #TODO: implement abstraction of rules
+        filter.INPUT.rules = [
+          { predicate = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; }
+        ];
+      };
+      tables = tables-defaults // cfg.tables;
+
+    in
+      writeText "lass-iptables-rules${toString iptables-version}" ''
+        ${buildTables iptables-version tables}
+      '';
+
+  startScript = writeScript "lass-iptables_start" ''
+    #! /bin/sh
+    set -euf
+    iptables-restore < ${rules4 4}
+    ip6tables-restore < ${rules4 6}
+  '';
+in
+
+{
+  networking.firewall.enable = false;
+
+  systemd.services.lass-iptables = {
+    description = "lass-iptables";
+    wantedBy = [ "network-pre.target" ];
+    before = [ "network-pre.target" ];
+    after = [ "systemd-modules-load.service" ];
+
+    path = with pkgs; [
+      iptables
+    ];
+
+    restartIfChanged = true;
+
+    serviceConfig = {
+      Type = "simple";
+      RemainAfterExit = true;
+      Restart = "always";
+      ExecStart = "@${startScript} lass-iptables_start";
+    };
+  };
+}
diff --git a/old/modules/lass/iptables/default.nix b/old/modules/lass/iptables/default.nix
new file mode 100644
index 00000000..7d46d456
--- /dev/null
+++ b/old/modules/lass/iptables/default.nix
@@ -0,0 +1,11 @@
+arg@{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.lass.iptables;
+  arg' = arg // { inherit cfg; };
+in
+
+{
+  options.lass.iptables = import ./options.nix arg';
+  config = lib.mkIf cfg.enable (import ./config.nix arg');
+}
diff --git a/old/modules/lass/iptables/options.nix b/old/modules/lass/iptables/options.nix
new file mode 100644
index 00000000..eb3bfc01
--- /dev/null
+++ b/old/modules/lass/iptables/options.nix
@@ -0,0 +1,44 @@
+{ lib, ... }:
+
+let
+  inherit (lib) mkEnableOption mkOption types;
+in
+
+{
+  enable = mkEnableOption "iptables";
+
+  #tables.filter.INPUT = {
+  # policy = "DROP";
+  # rules = [
+  #   { predicate = "-i retiolum"; target = "ACCEPT"; priority = -10; }
+  # ];
+  #};
+  #new api
+  tables = mkOption {
+    type = with types; attrsOf (attrsOf (submodule ({
+      options = {
+        policy = mkOption {
+          type = str;
+          default = "-";
+        };
+        rules = mkOption {
+          type = nullOr (listOf (submodule ({
+            options = {
+              predicate = mkOption {
+                type = str;
+              };
+              target = mkOption {
+                type = str;
+              };
+              precedence = mkOption {
+                type = int;
+                default = 0;
+              };
+            };
+          })));
+          default = null;
+        };
+      };
+    })));
+  };
+}
diff --git a/old/modules/lass/ircd.nix b/old/modules/lass/ircd.nix
index 3c9e2571..c57f7dd5 100644
--- a/old/modules/lass/ircd.nix
+++ b/old/modules/lass/ircd.nix
@@ -20,7 +20,7 @@
         #ssl_dh_params = "etc/dh.pem";
         #ssld_count = 1;
 
-        #default_max_clients = 1024;
+        default_max_clients = 10000;
         #nicklen = 30;
       };
 
@@ -40,23 +40,28 @@
         sslport = 9999;
       };
 
-      auth {
-        user = "*@*";
-        class = "users";
-      };
-
       class "users" {
         ping_time = 2 minutes;
-        number_per_ident = 10;
-        number_per_ip = 10;
-        number_per_ip_global = 50;
+        number_per_ident = 200;
+        number_per_ip = 200;
+        number_per_ip_global = 500;
         cidr_ipv4_bitlen = 24;
         cidr_ipv6_bitlen = 64;
-        number_per_cidr = 200;
-        max_number = 3000;
+        number_per_cidr = 9000;
+        max_number = 10000;
         sendq = 400 kbytes;
       };
 
+      exempt {
+        ip = "127.0.0.1";
+      };
+
+      auth {
+        user = "*@*";
+        class = "users";
+        flags = exceed_limit;
+      };
+
       channel {
         use_invex = yes;
         use_except = yes;
diff --git a/old/modules/lass/retiolum-cloudkrebs.nix b/old/modules/lass/retiolum-cloudkrebs.nix
deleted file mode 100644
index 1f035271..00000000
--- a/old/modules/lass/retiolum-cloudkrebs.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    ../tv/retiolum.nix
-  ];
-
-  services.retiolum = {
-    enable = true;
-    hosts = ../../hosts;
-    privateKeyFile = "/etc/nixos/secrets/cloudkrebs.retiolum.rsa_key.priv";
-    connectTo = [
-      "fastpoke"
-      "gum"
-      "ire"
-    ];
-  };
-
-  networking.firewall.allowedTCPPorts = [ 655 ];
-  networking.firewall.allowedUDPPorts = [ 655 ];
-}
diff --git a/old/modules/lass/retiolum-mors.nix b/old/modules/lass/retiolum-mors.nix
deleted file mode 100644
index 61a7856c..00000000
--- a/old/modules/lass/retiolum-mors.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    ../tv/retiolum.nix
-  ];
-
-  services.retiolum = {
-    enable = true;
-    hosts = ../../hosts;
-    privateKeyFile = "/etc/nixos/secrets/mors.retiolum.rsa_key.priv";
-    connectTo = [
-      "fastpoke"
-      "gum"
-      "ire"
-    ];
-  };
-
-  networking.firewall.allowedTCPPorts = [ 655 ];
-  networking.firewall.allowedUDPPorts = [ 655 ];
-}
diff --git a/old/modules/lass/retiolum-uriel.nix b/old/modules/lass/retiolum-uriel.nix
deleted file mode 100644
index 11dc61c1..00000000
--- a/old/modules/lass/retiolum-uriel.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    ../tv/retiolum.nix
-  ];
-
-  services.retiolum = {
-    enable = true;
-    hosts = ../../hosts;
-    privateKeyFile = "/etc/nixos/secrets/uriel.retiolum.rsa_key.priv";
-    connectTo = [
-      "fastpoke"
-      "gum"
-      "ire"
-    ];
-  };
-
-  networking.firewall.allowedTCPPorts = [ 655 ];
-  networking.firewall.allowedUDPPorts = [ 655 ];
-}
diff --git a/old/modules/lass/vim.nix b/old/modules/lass/vim.nix
index e1cff0d2..3fe45e1d 100644
--- a/old/modules/lass/vim.nix
+++ b/old/modules/lass/vim.nix
@@ -56,6 +56,8 @@ in {
       vnoremap < <gv
       vnoremap > >gv
 
+      nmap <esc>q :buffer 
+
       "Tabwidth
       set ts=2 sts=2 sw=2 et
 
diff --git a/old/modules/lass/xserver-lass.nix b/old/modules/lass/xserver-lass.nix
deleted file mode 100644
index 5c2d169b..00000000
--- a/old/modules/lass/xserver-lass.nix
+++ /dev/null
@@ -1,43 +0,0 @@
-{ config, pkgs, ... }:
-
-let
-  mainUser = config.users.extraUsers.mainUser;
-
-in {
-  services.xserver.enable = true;
-
-
-  #fonts.enableFontConfig = true;
-  #fonts.enableFontDir = true;
-  fonts.fonts = [
-    pkgs.xlibs.fontschumachermisc
-  ];
-  #services.xfs.enable = true;
-  #services.xserver.useXFS = "unix/:7100";
-
-  #services.xserver.displayManager.desktopManagerHandlesLidAndPower = true;
-
-  #services.xserver.display = 11;
-  #services.xserver.tty = 11;
-  # services.xserver.layout = "us";
-  # services.xserver.xkbOptions = "eurosign:e";
-
-  #services.xserver.multitouch.enable = true;
-
-  services.xserver.windowManager.xmonad.extraPackages = hspkgs: with hspkgs; [
-    X11-xshape
-  ];
-  services.xserver.windowManager.xmonad.enable = true;
-  services.xserver.windowManager.xmonad.enableContribAndExtras = true;
-  services.xserver.windowManager.default = "xmonad";
-  services.xserver.desktopManager.default = "none";
-  services.xserver.desktopManager.xterm.enable = false;
-
-  services.xserver.displayManager.slim.enable = true;
-  services.xserver.displayManager.auto.enable = true;
-  services.xserver.displayManager.auto.user = mainUser.name;
-  #services.xserver.displayManager.job.logsXsession = true;
-
-  services.xserver.vaapiDrivers = [ pkgs.vaapiIntel ];
-
-}