summaryrefslogtreecommitdiffstats
path: root/nin/2configs/default.nix
blob: c71d02ada492fe88a9a1fc9aa34ba3299148a3ab (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
{ config, lib, pkgs, ... }:

with import <stockholm/lib>;
{
  imports = [
    ../2configs/nixpkgs.nix
    ../2configs/vim.nix
    {
      users.extraUsers =
        mapAttrs (_: h: { hashedPassword = h; })
                 (import <secrets/hashedPasswords.nix>);
    }
    {
      users.users = {
        root = {
          openssh.authorizedKeys.keys = [
            config.krebs.users.nin.pubkey
          ];
        };
        mainUser = {
          name = "nin";
          uid = 1337;
          home = "/home/nin";
          group = "users";
          createHome = true;
          useDefaultShell = true;
          extraGroups = [
            "audio"
            "fuse"
          ];
          openssh.authorizedKeys.keys = [
            config.krebs.users.nin.pubkey
          ];
        };
      };
    }
    {
      environment.variables = {
        NIX_PATH = mkForce "secrets=/var/src/stockholm/null:/var/src";
      };
    }
    (let ca-bundle = "${pkgs.cacert}/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;
  nix.maxJobs = config.krebs.build.host.cores;

  krebs = {
    enable = true;
    search-domain = "retiolum";
    build = {
      user = config.krebs.users.nin;
      source = let inherit (config.krebs.build) host; in {
        nixos-config.symlink = "stockholm/nin/1systems/${host.name}.nix";
        secrets.file = "/home/nin/secrets/${host.name}";
        stockholm.file = getEnv "PWD";
      };
    };
  };

  nix.useSandbox = true;

  users.mutableUsers = false;

  services.timesyncd.enable = true;

  #why is this on in the first place?
  services.nscd.enable = false;

  boot.tmpOnTmpfs = true;
  # see tmpfiles.d(5)
  systemd.tmpfiles.rules = [
    "d /tmp 1777 root root - -"
  ];

  # multiple-definition-problem when defining environment.variables.EDITOR
  environment.extraInit = ''
    EDITOR=vim
    MANPAGER=most
  '';

  nixpkgs.config.allowUnfree = true;

  environment.systemPackages = with pkgs; [
  #stockholm
    git
    gnumake
    jq
    proot
    populate
    p7zip
    unzip
    unrar
  ];

  programs.bash = {
    enableCompletion = true;
    interactiveShellInit = ''
      HISTCONTROL='erasedups:ignorespace'
      HISTSIZE=65536
      HISTFILESIZE=$HISTSIZE

      shopt -s checkhash
      shopt -s histappend histreedit histverify
      shopt -s no_empty_cmd_completion
      complete -d cd
    '';
    promptInit = ''
      if test $UID = 0; then
        PS1='\[\033[1;31m\]\w\[\033[0m\] '
      elif test $UID = 1337; then
        PS1='\[\033[1;32m\]\w\[\033[0m\] '
      else
        PS1='\[\033[1;33m\]\u@\w\[\033[0m\] '
      fi
      if test -n "$SSH_CLIENT"; then
        PS1='\[\033[35m\]\h'" $PS1"
      fi
    '';
  };

  services.openssh = {
    enable = true;
    hostKeys = [
      # XXX bits here make no science
      { bits = 8192; type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
    ];
  };

  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 = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; precedence = 10001; }
        { predicate = "-p icmp"; target = "ACCEPT"; 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; }
      ];
    };
  };

  networking.dhcpcd.extraConfig = ''
    noipv4ll
  '';
}