summaryrefslogtreecommitdiffstats
path: root/lass/2configs/default.nix
blob: 95c6cf3e2cd414e9d55109b94cfee8d107afcc80 (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
{ config, lib, pkgs, ... }:

with config.krebs.lib;
{
  imports = [
    ../2configs/vim.nix
    ../2configs/zsh.nix
    ../2configs/mc.nix
    ../2configs/retiolum.nix
    ../2configs/nixpkgs.nix
    ./backups.nix
    {
      users.extraUsers =
        mapAttrs (_: h: { hashedPassword = h; })
                 (import <secrets/hashedPasswords.nix>);
    }
    {
      users.extraUsers = {
        root = {
          openssh.authorizedKeys.keys = [
            config.krebs.users.lass.pubkey
            config.krebs.users.lass-uriel.pubkey
            config.krebs.users.lass-shodan.pubkey
          ];
        };
        mainUser = {
          name = "lass";
          uid = 1337;
          home = "/home/lass";
          group = "users";
          createHome = true;
          useDefaultShell = true;
          extraGroups = [
            "fuse"
          ];
          openssh.authorizedKeys.keys = [
            config.krebs.users.lass.pubkey
            config.krebs.users.lass-uriel.pubkey
            config.krebs.users.lass-shodan.pubkey
          ];
        };
      };
    }
    {
      nix = {
        binaryCaches = ["http://cache.prism.r"];
        binaryCachePublicKeys = ["cache.prism-1:+S+6Lo/n27XEtvdlQKuJIcb1yO5NUqUCE2lolmTgNJU="];
      };
    }
  ];

  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.lass;
      source = mapAttrs (_: mkDefault) ({
        nixos-config = "symlink:stockholm/lass/1systems/${config.krebs.build.host.name}.nix";
        secrets = if getEnv "dummy_secrets" == "true"
          then toString <stockholm/lass/2configs/tests/dummy-secrets>
          else "/home/lass/secrets/${config.krebs.build.host.name}";
        #secrets-common = "/home/lass/secrets/common";
        stockholm = getEnv "PWD";
      } // optionalAttrs config.krebs.build.host.secure {
        #secrets-master = "/home/lass/secrets/master";
      });
    };
  };

  nix.useChroot = 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
    parallel
    proot

  #style
    most
    rxvt_unicode.terminfo

  #monitoring tools
    htop
    iotop

  #network
    iptables
    iftop

  #stuff for dl
    aria2

  #neat utils
    krebspaste
    pciutils
    psmisc
    q
    rs
    tmux
    untilport
    usbutils

  #unpack stuff
    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

      #fancy colors
      if [ -e ~/LS_COLORS ]; then
        eval $(dircolors ~/LS_COLORS)
      fi

      if [ -e /etc/nixos/dotfiles/link ]; then
        /etc/nixos/dotfiles/link
      fi
    '';
    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 = "-i retiolum"; target = "REJECT"; precedence = -10000; }
      ];
    };
  };

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

  #CVE-2016-0777 and CVE-2016-0778 workaround
  #https://www.qualys.com/2016/01/14/cve-2016-0777-cve-2016-0778/openssh-cve-2016-0777-cve-2016-0778.txt
  programs.ssh.extraConfig = ''
    UseRoaming no
  '';

}