diff options
Diffstat (limited to 'krebs/3modules')
| -rw-r--r-- | krebs/3modules/default.nix | 16 | ||||
| -rw-r--r-- | krebs/3modules/github-hosts-sync.nix | 35 |
2 files changed, 27 insertions, 24 deletions
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix index edfbde9b..ea189470 100644 --- a/krebs/3modules/default.nix +++ b/krebs/3modules/default.nix @@ -138,6 +138,22 @@ let mkIf (privkey != null) (mkForce [privkey]); services.openssh.knownHosts = + # GitHub's IPv4 address range is 192.30.252.0/22 + # Refs https://help.github.com/articles/what-ip-addresses-does-github-use-that-i-should-whitelist/ + # 192.30.252.0/22 = 192.30.252.0-192.30.255.255 (1024 addresses) + # Because line length is limited by OPENSSH_LINE_MAX (= 8192), + # we split each /24 into its own entry. + listToAttrs (map + (c: { + name = "github${toString c}"; + value = { + hostNames = ["github.com"] ++ + map (d: "192.30.${toString c}.${toString d}") (range 0 255); + publicKey = "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ=="; + }; + }) + (range 252 255)) + // mapAttrs (name: host: { hostNames = diff --git a/krebs/3modules/github-hosts-sync.nix b/krebs/3modules/github-hosts-sync.nix index f44fe3ad..2a1df9e0 100644 --- a/krebs/3modules/github-hosts-sync.nix +++ b/krebs/3modules/github-hosts-sync.nix @@ -1,7 +1,7 @@ { config, lib, pkgs, ... }: with builtins; -with lib; +with import ../4lib { inherit lib; }; let cfg = config.krebs.github-hosts-sync; @@ -21,7 +21,7 @@ let default = "/var/lib/github-hosts-sync"; }; ssh-identity-file = mkOption { - type = types.str; # TODO must be named *.ssh.{id_rsa,id_ed25519} + type = types.suffixed-str [".ssh.id_ed25519" ".ssh.id_rsa"]; default = toString <secrets/github-hosts-sync.ssh.id_rsa>; }; }; @@ -41,27 +41,11 @@ let ExecStartPre = pkgs.writeScript "github-hosts-sync-init" '' #! /bin/sh set -euf - - ssh_identity_file_target=$( - case ${cfg.ssh-identity-file} in - *.ssh.id_rsa|*.ssh.id_ed25519) echo ${cfg.dataDir}/.ssh/id_rsa;; - *.ssh.id_ed25519) echo ${cfg.dataDir}/.ssh/id_ed25519;; - *) - echo "bad identity file name: ${cfg.ssh-identity-file}" >&2 - exit 1 - esac - ) - - mkdir -p ${cfg.dataDir} - chown ${user.name}: ${cfg.dataDir} - - install \ - -o ${user.name} \ - -m 0400 \ + install -m 0711 -o ${user.name} -d ${cfg.dataDir} + install -m 0700 -o ${user.name} -d ${cfg.dataDir}/.ssh + install -m 0400 -o ${user.name} \ ${cfg.ssh-identity-file} \ - "$ssh_identity_file_target" - - ln -snf ${pkgs.github-known_hosts} ${cfg.dataDir}/.ssh/known_hosts + ${cfg.dataDir}/.ssh/${fileExtension cfg.ssh-identity-file} ''; ExecStart = "${pkgs.github-hosts-sync}/bin/github-hosts-sync"; }; @@ -77,5 +61,8 @@ let name = "github-hosts-sync"; uid = 3220554646; # genid github-hosts-sync }; -in -out + + # TODO move to lib? + fileExtension = s: last (splitString "." s); + +in out |