From d5c580daa1c1fd878dad9f08ea699bc531791a08 Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Fri, 19 Apr 2019 16:14:53 +0200
Subject: init mb

---
 mb/2configs/default.nix | 198 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 198 insertions(+)
 create mode 100644 mb/2configs/default.nix

(limited to 'mb/2configs/default.nix')

diff --git a/mb/2configs/default.nix b/mb/2configs/default.nix
new file mode 100644
index 00000000..75189e19
--- /dev/null
+++ b/mb/2configs/default.nix
@@ -0,0 +1,198 @@
+with import <stockholm/lib>;
+{ config, pkgs, ... }:
+{
+  imports = [
+    {
+      users.users = {
+        root = {
+          openssh.authorizedKeys.keys = [
+            config.krebs.users.mb.pubkey
+          ];
+        };
+        mb = {
+          name = "mb";
+          uid = 1337;
+          home = "/home/mb";
+          group = "users";
+          createHome = true;
+          shell = "/run/current-system/sw/bin/fish";
+          extraGroups = [
+            "audio"
+            "video"
+            "fuse"
+            "wheel"
+          ];
+          openssh.authorizedKeys.keys = [
+            config.krebs.users.mb.pubkey
+          ];
+        };
+      };
+    }
+    {
+      environment.variables = {
+        NIX_PATH = mkForce "secrets=/var/src/stockholm/null:/var/src";
+      };
+    }
+    (let ca-bundle = "/etc/ssl/certs/ca-bundle.crt"; in {
+      environment.variables = {
+        CURL_CA_BUNDLE = ca-bundle;
+        GIT_SSL_CAINFO = ca-bundle;
+        SSL_CERT_FILE = ca-bundle;
+      };
+    })
+  ];
+
+  networking.hostName = config.krebs.build.host.name;
+
+  krebs = {
+    enable = true;
+    build.user = config.krebs.users.mb;
+  };
+
+  users.mutableUsers = false;
+
+  services.timesyncd.enable = mkForce true;
+
+  systemd.tmpfiles.rules = [
+    "d /tmp 1777 root root - -"
+  ];
+
+  # multiple-definition-problem when defining environment.variables.EDITOR
+  environment.extraInit = ''
+    EDITOR=vim
+  '';
+
+  nixpkgs.config.allowUnfree = true;
+
+  environment.systemPackages = with pkgs; [
+  #stockholm
+    git
+    gnumake
+    jq
+    parallel
+    proot
+    populate
+
+  #style
+    most
+    rxvt_unicode.terminfo
+
+  #monitoring tools
+    htop
+    iotop
+
+  #network
+    iptables
+    iftop
+    tcpdump
+
+  #stuff for dl
+    aria2
+
+  #neat utils
+    fish
+    file
+    kpaste
+    krebspaste
+    mosh
+    pciutils
+    psmisc
+    tmux
+    untilport
+    usbutils
+
+  #unpack stuff
+    p7zip
+
+    (pkgs.writeDashBin "sshn" ''
+      ${pkgs.openssh}/bin/ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$@"
+    '')
+  ];
+
+  services.openssh = {
+    enable = true;
+    permitRootLogin = "yes";
+    passwordAuthentication = false;
+    hostKeys = [
+      # XXX bits here make no science
+      { bits = 8192; type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
+    ];
+  };
+
+  programs.fish = {
+    enable = true;
+    shellInit = ''
+      function ssh_agent --description 'launch the ssh-agent and add the id_rsa identity'
+          if begin
+              set -q SSH_AGENT_PID
+              and kill -0 $SSH_AGENT_PID
+              and grep -q '^ssh-agent' /proc/$SSH_AGENT_PID/cmdline
+          end
+              echo "ssh-agent running on pid $SSH_AGENT_PID"
+          else
+              eval (command ssh-agent -c | sed 's/^setenv/set -Ux/')
+          end
+          set -l identity $HOME/.ssh/id_rsa
+          set -l fingerprint (ssh-keygen -lf $identity | awk '{print $2}')
+          ssh-add -l | grep -q $fingerprint
+            or ssh-add $identity
+      end
+    '';
+    promptInit = ''
+      function fish_prompt --description 'Write out the prompt'
+          set -l color_cwd
+          set -l suffix
+          set -l nix_shell_info (
+              if test "$IN_NIX_SHELL" != ""
+                 echo -n " <nix-shell>"
+              end
+          )
+          switch "$USER"
+              case root toor
+                  if set -q fish_color_cwd_root
+                      set color_cwd $fish_color_cwd_root
+                  else
+                      set color_cwd $fish_color_cwd
+                  end
+                  set suffix '#'
+              case '*'
+                  set color_cwd $fish_color_cwd
+                  set suffix '>'
+          end
+
+          echo -n -s "$USER" @ (set_color yellow) (prompt_hostname) (set_color normal) "$nix_shell_info" ' ' (set_color $color_cwd) (prompt_pwd) (set_color normal) "$suffix "
+      end
+    '';
+  };
+
+  services.journald.extraConfig = ''
+    SystemMaxUse=1G
+    RuntimeMaxUse=128M
+  '';
+
+  krebs.iptables = {
+    enable = true;
+    tables = {
+      nat.PREROUTING.rules = [
+        { predicate = "! -i retiolum -p tcp -m tcp --dport 22"; target = "REDIRECT --to-ports 0"; precedence = 100; }
+        { predicate = "-p tcp -m tcp --dport 45621"; target = "REDIRECT --to-ports 22"; precedence = 99; }
+      ];
+      nat.OUTPUT.rules = [
+        { predicate = "-o lo -p tcp -m tcp --dport 45621"; target = "REDIRECT --to-ports 22"; precedence = 100; }
+      ];
+      filter.INPUT.policy = "DROP";
+      filter.FORWARD.policy = "DROP";
+      filter.INPUT.rules = [
+        { predicate = "-i retiolum -p udp --dport 60000:61000"; target = "ACCEPT";}
+        { predicate = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; precedence = 10001; }
+        { predicate = "-p icmp"; target = "ACCEPT"; precedence = 10000; }
+        { predicate = "-p ipv6-icmp"; target = "ACCEPT"; v4 = false;  precedence = 10000; }
+        { predicate = "-i lo"; target = "ACCEPT"; precedence = 9999; }
+        { predicate = "-p tcp --dport 22"; target = "ACCEPT"; precedence = 9998; }
+        { predicate = "-p tcp -i retiolum"; target = "REJECT --reject-with tcp-reset"; precedence = -10000; }
+        { predicate = "-p udp -i retiolum"; target = "REJECT --reject-with icmp-port-unreachable"; v6 = false; precedence = -10000; }
+        { predicate = "-i retiolum"; target = "REJECT --reject-with icmp-proto-unreachable"; v6 = false; precedence = -10000; }
+      ];
+    };
+  };
+}
-- 
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