diff options
Diffstat (limited to 'system')
32 files changed, 654 insertions, 308 deletions
diff --git a/system/default.nix b/system/default.nix index d67ada2..14f0748 100644 --- a/system/default.nix +++ b/system/default.nix @@ -1,7 +1,9 @@ -{config, ...}: { +{...}: { imports = [ - ./file_system_layouts + ./disks + ./impermanence ./packages + ./secrets ./services ./users ]; diff --git a/system/disks/default.nix b/system/disks/default.nix new file mode 100644 index 0000000..f4e6935 --- /dev/null +++ b/system/disks/default.nix @@ -0,0 +1,82 @@ +{ + config, + lib, + ... +}: +with lib; let + cfg = config.system.disks; + defaultMountOptions = ["compress-force=zstd:15"]; +in { + options.system.disks = { + disk = mkOption { + type = lib.types.path; + example = literalExpression "/dev/disk/by-id/ata-WDC_WD10SDRW-11A0XS0_WD-WXP2A901KJN5"; + description = lib.mdDoc "Path to the disk"; + }; + }; + + config = { + disko.devices = { + disk.main = { + device = cfg.disk; + content = { + type = "table"; + format = "gpt"; + partitions = [ + { + name = "boot"; + start = "0"; + end = "1M"; + part-type = "primary"; + flags = ["bios_grub"]; + } + { + name = "root"; + # leave space for the grub aka BIOS boot + start = "1M"; + end = "100%"; + part-type = "primary"; + bootable = true; + content = { + type = "btrfs"; + extraArgs = ["-f" "--label nixos"]; # f: Override existing partitions + subvolumes = { + "nix" = { + mountpoint = "/nix"; + mountOptions = defaultMountOptions; + }; + "persistent-storage" = { + mountpoint = "/srv"; + mountOptions = defaultMountOptions; + }; + "persistent-storage@snapshots" = { + mountpoint = "/srv/.snapshots"; + mountOptions = defaultMountOptions; + }; + "boot" = { + mountpoint = "/boot"; + mountOptions = defaultMountOptions; + }; + }; + }; + } + ]; + }; + }; + nodev = { + "/" = { + fsType = "tmpfs"; + mountOptions = ["defaults" "size=2G" "mode=755"]; + }; + }; + }; + fileSystems = { + "/srv" = { + neededForBoot = true; + }; + "/boot" = { + neededForBoot = true; + }; + }; + }; +} diff --git a/system/file_system_layouts/default.nix b/system/file_system_layouts/default.nix deleted file mode 100644 index 4cd9ff1..0000000 --- a/system/file_system_layouts/default.nix +++ /dev/null @@ -1,53 +0,0 @@ -{ - modulesPath, - config, - lib, - ... -}: -with lib; let - cfg = config.system.fileSystemLayouts; -in { - options.system.fileSystemLayouts = { - mainDisk = mkOption { - type = lib.types.path; - example = literalExpression "/dev/disk/by-uuid/0442cb6d-f13a-4635-b487-fa76189774c5"; - description = lib.mdDoc "Path to the main disk"; - }; - }; - config = { - fileSystems = { - "/" = { - device = "tmpfs"; - fsType = "tmpfs"; - options = ["defaults" "size=2G" "mode=755"]; - }; - "/nix" = { - device = cfg.mainDisk; - fsType = "btrfs"; - options = ["subvol=nix" "compress-force=zstd"]; - }; - "/srv" = { - device = cfg.mainDisk; - fsType = "btrfs"; - options = ["subvol=storage" "compress-force=zstd"]; - }; - "/boot" = { - device = cfg.mainDisk; - options = ["subvol=boot" "compress-force=zstd"]; - }; - - "/etc/nixos" = { - device = "/srv/nix-config"; - options = ["bind"]; - }; - "/var/lib/acme" = { - device = "/srv/acme"; - options = ["bind"]; - }; - "/var/lib/postgresql" = { - device = "/srv/postgresql"; - options = ["bind"]; - }; - }; - }; -} diff --git a/system/impermanence/default.nix b/system/impermanence/default.nix new file mode 100644 index 0000000..198eeba --- /dev/null +++ b/system/impermanence/default.nix @@ -0,0 +1,23 @@ +{...}: { + # TODO: Only activate them if their module is also active + imports = [ + ./mods/acme.nix + ./mods/keycloak.nix + ./mods/mail.nix + ./mods/minecraft.nix + ./mods/nix-sync.nix + ./mods/openssh.nix + ./mods/users.nix + ]; + + environment.persistence."/srv" = { + hideMounts = true; + directories = [ + "/etc/nixos" + "/var/log" + ]; + files = [ + "/etc/machine-id" + ]; + }; +} diff --git a/system/impermanence/mods/acme.nix b/system/impermanence/mods/acme.nix new file mode 100644 index 0000000..b16171e --- /dev/null +++ b/system/impermanence/mods/acme.nix @@ -0,0 +1,5 @@ +{...}: { + environment.persistence."/srv".directories = [ + "/var/lib/acme" + ]; +} diff --git a/system/impermanence/mods/fail2ban.nix b/system/impermanence/mods/fail2ban.nix new file mode 100644 index 0000000..a817876 --- /dev/null +++ b/system/impermanence/mods/fail2ban.nix @@ -0,0 +1,10 @@ +{...}: { + environment.persistence."/srv".directories = [ + { + directory = "/var/lib/fail2ban"; + user = "fail2ban"; + group = "fail2ban"; + mode = "0700"; + } + ]; +} diff --git a/system/impermanence/mods/keycloak.nix b/system/impermanence/mods/keycloak.nix new file mode 100644 index 0000000..63b02f5 --- /dev/null +++ b/system/impermanence/mods/keycloak.nix @@ -0,0 +1,5 @@ +{...}: { + environment.persistence."/srv".directories = [ + "/var/lib/postgresql" + ]; +} diff --git a/system/impermanence/mods/mail.nix b/system/impermanence/mods/mail.nix new file mode 100644 index 0000000..18151ad --- /dev/null +++ b/system/impermanence/mods/mail.nix @@ -0,0 +1,34 @@ +{...}: { + environment.persistence."/srv".directories = [ + { + directory = "/var/lib/mail/backup"; + user = "virtualMail"; + group = "virtualMail"; + mode = "0700"; + } + { + directory = "/var/lib/mail/sieve"; + user = "virtualMail"; + group = "virtualMail"; + mode = "0700"; + } + { + directory = "/var/lib/mail/vmail"; + user = "virtualMail"; + group = "virtualMail"; + mode = "0700"; + } + { + directory = "/var/lib/mail/dkim"; + user = "opendkim"; + group = "opendkim"; + mode = "0700"; + } + { + directory = "/var/lib/rspamd"; + user = "rspamd"; + group = "rspamd"; + mode = "0700"; + } + ]; +} diff --git a/system/impermanence/mods/minecraft.nix b/system/impermanence/mods/minecraft.nix new file mode 100644 index 0000000..2a02626 --- /dev/null +++ b/system/impermanence/mods/minecraft.nix @@ -0,0 +1,10 @@ +{...}: { + environment.persistence."/srv".directories = [ + { + directory = "/var/lib/minecraft"; + user = "minecraft"; + group = "minecraft"; + mode = "0700"; + } + ]; +} diff --git a/system/impermanence/mods/nix-sync.nix b/system/impermanence/mods/nix-sync.nix new file mode 100644 index 0000000..11449ea --- /dev/null +++ b/system/impermanence/mods/nix-sync.nix @@ -0,0 +1,10 @@ +{...}: { + environment.persistence."/srv".directories = [ + { + directory = "/var/lib/nix-sync"; + user = "nix-sync"; + group = "nix-sync"; + mode = "0700"; + } + ]; +} diff --git a/system/impermanence/mods/openssh.nix b/system/impermanence/mods/openssh.nix new file mode 100644 index 0000000..0373a83 --- /dev/null +++ b/system/impermanence/mods/openssh.nix @@ -0,0 +1,21 @@ +{...}: { + /* + FIXME: + This results in a boot error, as the `/var/lib/sshd` directory is only mounted _after_ the stage 2 init and with it the system activation. + Agenix needs the sshd hostkey however to decrypt the secrets and such we have to ensure that this directory is mounted _before_ the system activation. + Alas the only way I see to achieve that is to store the ssh hostkey directly on /srv, which is mounted before (it's marked as 'neededForBoot' after all). + + It should be possible to achieve this with impermanence however, as `/var/log` is mounted in the stage 1 init; The problem is that I have no idea _why_ only + this is mounted and nothing else. + + + environment.persistence."/srv".directories = [ + { + directory = "/var/lib/sshd"; + user = "root"; + group = "root"; + mode = "0755"; + } + ]; + */ +} diff --git a/system/impermanence/mods/users.nix b/system/impermanence/mods/users.nix new file mode 100644 index 0000000..0692b00 --- /dev/null +++ b/system/impermanence/mods/users.nix @@ -0,0 +1,28 @@ +{...}: { + environment.persistence."/srv".directories = [ + { + directory = "/home"; + user = "root"; + group = "root"; + mode = "0755"; + } + { + directory = "/home/sils"; + user = "sils"; + group = "sils"; + mode = "0700"; + } + { + directory = "/home/soispha"; + user = "soispha"; + group = "soispha"; + mode = "0700"; + } + { + directory = "/home/nightingale"; + user = "nightingale"; + group = "nightingale"; + mode = "0700"; + } + ]; +} diff --git a/system/mail/default.nix b/system/mail/default.nix deleted file mode 100644 index 1086f6e..0000000 --- a/system/mail/default.nix +++ /dev/null @@ -1,40 +0,0 @@ -# vim: ts=2 -{lib, ...}: let - all_admins = [ - "sils@vhack.eu" - "soispha@vhack.eu" - "nightingale@vhack.eu" - ]; - users = import ./users.nix {}; -in - lib.recursiveUpdate { - enable = true; - fqdn = "server1.vhack.eu"; - - useFsLayout = true; - - extraVirtualAliases = { - "abuse@vhack.eu" = all_admins; - "postmaster@vhack.eu" = all_admins; - "admin@vhack.eu" = all_admins; - }; - - mailDirectory = "/srv/mail/vmail"; - dkimKeyDirectory = "/srv/mail/dkim"; - sieveDirectory = "/srv/mail/sieve"; - backup.snapshotRoot = "/srv/mail/backup"; - - enableImap = false; - enableImapSsl = true; - enablePop3 = false; - enablePop3Ssl = true; - # SMTP - enableSubmission = false; - enableSubmissionSsl = true; - openFirewall = true; - - keyFile = "/var/lib/acme/server1.vhack.eu/key.pem"; - certificateScheme = "acme"; - certificateFile = "/var/lib/acme/server1.vhack.eu/fullchain.pem"; - } - users diff --git a/system/secrets/default.nix b/system/secrets/default.nix new file mode 100644 index 0000000..3d92fe8 --- /dev/null +++ b/system/secrets/default.nix @@ -0,0 +1,12 @@ +{...}: { + age = { + secrets = { + keycloak = { + file = ./keycloak/passwd.tix; + mode = "700"; + owner = "root"; + group = "root"; + }; + }; + }; +} diff --git a/system/secrets/keycloak/passwd.tix b/system/secrets/keycloak/passwd.tix new file mode 100644 index 0000000..b5c36cd --- /dev/null +++ b/system/secrets/keycloak/passwd.tix @@ -0,0 +1,17 @@ +-----BEGIN AGE ENCRYPTED FILE----- +YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBGeFZ2Uk10Z1lrNUV6SWtu +UFZLVFR2dWJsMnNZTkE0Q3loa1c0c3ZwTjJvCjhHcm9XVk1jWENYNG5VNVV2RlZp +SVZROEFrU2tNV1dDYmNOdmEzanoyd2sKLT4gWDI1NTE5IHFOTEhFUUtGOWMzWjVO +MGs2a0tsYlZSZGI3NXdBRktKNDgxdzRmQTI1emsKeVJzbHJhR3h5NDVwM2pqcFFW +UzROY2toa0ZBL1p2elRmeHdUTFNhRm91bwotPiBzc2gtZWQyNTUxOSBPRDhUNGcg +NG42WHBrcVh0cjJYKzMwR3FkTHN0VTZUY0xyZVQvMjR3azdtZ0V4M0dpRQpxSzlj +anVRVndxdWhaQldZeHJ0WVFCNzZJMHFnaG5KRDRQa003enoyME1FCi0+ICZ2LjlB +SS1ncmVhc2Ugfj51dWUyIG5XOExyNmR2IFNVdmkKK3QwSmRRCi0tLSBqb3FPRWtV +dUdLcWV4R1VnOGZmNGxBY0dVbTRZN094V0dIeWpZTWp1V1QwCpu/WQunSMxbtxwz +uiFrDcdAa3H3+2gIFHmktFbHZX9XNC2ri99G7nqQ9SoBvnpRFhhAiw0LSWnq2lqr +rMQeug/z0sooWO6R2H17aLHXwxz82Spm7eUlc3nMz243U0SChz7OnPDgHBgLztqJ +3zOMub3inn83jR7Pg+GjEuI26tqZUp6107CKzvBWI8ePsa7MW19UdmEVplewxrDq +fjNsmid3+NNJ0LjC3gGUppHtTJW9ikTvaDMtS5Ysn94JoS6xRzVgE2LBswGBiQBJ +ZDV+9het3ijDyljk3pjPRDKoWPEctT/cWLczEMK5vHqVt3pr/IAWqJTfXVkebP6Q +6QdZrUKl/xxKmApVRx9K0wQAhfwlKKTHpW3hFFNivZtSg0hSaF4= +-----END AGE ENCRYPTED FILE----- diff --git a/system/secrets/secrets.nix b/system/secrets/secrets.nix new file mode 100644 index 0000000..cdaf50d --- /dev/null +++ b/system/secrets/secrets.nix @@ -0,0 +1,12 @@ +let + soispha = "age1mshh4ynzhhzhff25tqwkg4j054g3xwrfznh98ycchludj9wjj48qn2uffn"; + sils = "age1vuhaey7kd9l76y6f9weeqmde3s4kjw38869ju6u3027yece2r3rqssjxst"; + + server1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMnqsfIZjelH7rcvFvnLR5zUZuC8thsBupBlvjcMRBUm"; +in { + "keycloak/passwd.tix".publicKeys = [ + soispha + sils + server1 + ]; +} diff --git a/system/services/acme/default.nix b/system/services/acme/default.nix deleted file mode 100644 index 0a0c4ce..0000000 --- a/system/services/acme/default.nix +++ /dev/null @@ -1,38 +0,0 @@ -{lib, ...}: let - domains = import ./domains.nix {}; - - virtualHosts = builtins.listToAttrs ( - builtins.map (domain_name: { - name = "acmechallenge.${domain_name}"; - value = { - serverAliases = ["*.${domain_name}"]; - locations."/.well-known/acme-challenge" = { - root = "/var/lib/acme/.challenges"; - }; - locations."/" = { - return = "301 https://$host$request_uri"; - }; - }; - }) - domains - ); - certs = lib.attrsets.genAttrs domains ( - domain_name: { - webroot = "/var/lib/acme/.challenges"; - group = "nginx"; - } - ); -in { - users.users.nginx.extraGroups = ["acme"]; - - services.nginx = { - enable = true; - inherit virtualHosts; - }; - - security.acme = { - acceptTerms = true; - defaults.email = "admin@vhack.eu"; - inherit certs; - }; -} diff --git a/system/services/acme/domains.nix b/system/services/acme/domains.nix Binary files differdeleted file mode 100644 index 8f0930d..0000000 --- a/system/services/acme/domains.nix +++ /dev/null diff --git a/system/services/default.nix b/system/services/default.nix index 19a531f..7bf26c3 100644 --- a/system/services/default.nix +++ b/system/services/default.nix @@ -1,14 +1,14 @@ {...}: { imports = [ - ./acme + ./fail2ban ./keycloak + ./mail ./matrix ./minecraft ./nginx ./nix - ./opensshd + ./nix-sync + ./openssh ./rust-motd - ./fail2ban - ./git-sync ]; } diff --git a/system/services/fail2ban/default.nix b/system/services/fail2ban/default.nix index 5aee097..43fd674 100644 --- a/system/services/fail2ban/default.nix +++ b/system/services/fail2ban/default.nix @@ -1,4 +1,3 @@ -# vim: ts=2 {...}: { services.fail2ban = { enable = true; @@ -8,7 +7,7 @@ logtarget = SYSLOG socket = /run/fail2ban/fail2ban.sock pidfile = /run/fail2ban/fail2ban.pid - dbfile = /srv/fail2ban/fail2ban.sqlite3 + dbfile = /var/lib/fail2ban/db.sqlite3 ''; bantime-increment = { enable = true; diff --git a/system/services/git-sync/default.nix b/system/services/git-sync/default.nix deleted file mode 100644 index 776ca60..0000000 --- a/system/services/git-sync/default.nix +++ /dev/null @@ -1,104 +0,0 @@ -/* -Taken from: -https://github.com/nix-community/home-manager/blob/9ba7b3990eb1f4782ea3f5fe7ac4f3c88dd7a32c/modules/services/git-sync.nix -*/ -{ - config, - lib, - pkgs, - ... -}: let - cfg = config.services.git-sync; - - mkUnit = name: repo: { - Unit.Description = "Git Sync ${name}"; - - Install.WantedBy = ["default.target"]; - - Service = { - Environment = [ - "PATH=${lib.makeBinPath (with pkgs; [openssh git])}" - "GIT_SYNC_DIRECTORY=${repo.path}" - "GIT_SYNC_COMMAND=${cfg.package}/bin/git-sync" - "GIT_SYNC_REPOSITORY=${repo.uri}" - "GIT_SYNC_INTERVAL=${toString repo.interval}" - ]; - ExecStart = "${cfg.package}/bin/git-sync-on-inotify"; - Restart = "on-abort"; - }; - }; - - services = - lib.mapAttrs' (name: repo: { - name = "git-sync-${name}"; - value = mkUnit name repo; - }) - cfg.repositories; - - repositoryType = lib.types.submodule ({name, ...}: { - options = { - name = lib.mkOption { - internal = true; - default = name; - type = lib.types.str; - description = "The name that should be given to this unit."; - }; - - path = lib.mkOption { - type = lib.types.path; - description = "The path at which to sync the repository"; - }; - - uri = lib.mkOption { - type = lib.types.str; - example = "git+ssh://user@example.com:/~[user]/path/to/repo.git"; - description = '' - The URI of the remote to be synchronized. This is only used in the - event that the directory does not already exist. See - <link xlink:href="https://git-scm.com/docs/git-clone#_git_urls"/> - for the supported URIs. - ''; - }; - - interval = lib.mkOption { - type = lib.types.int; - default = 500; - description = '' - The interval, specified in seconds, at which the synchronization will - be triggered even without filesystem changes. - ''; - }; - }; - }); -in { - options = { - services.git-sync = { - enable = lib.mkEnableOption "git-sync services"; - - package = lib.mkOption { - type = lib.types.package; - default = pkgs.git-sync; - defaultText = lib.literalExpression "pkgs.git-sync"; - description = '' - Package containing the <command>git-sync</command> program. - ''; - }; - - repositories = lib.mkOption { - type = with lib.types; attrsOf repositoryType; - description = '' - The repositories that should be synchronized. - ''; - }; - }; - }; - - config = lib.mkIf cfg.enable { - assertions = [ - (lib.hm.assertions.assertPlatform "services.git-sync" pkgs - lib.platforms.linux) - ]; - - systemd.user.services = services; - }; -} diff --git a/system/services/keycloak/default.nix b/system/services/keycloak/default.nix index dfeabc3..5f21b90 100644 --- a/system/services/keycloak/default.nix +++ b/system/services/keycloak/default.nix @@ -31,7 +31,7 @@ createLocally = true; username = "keycloak"; - passwordFile = "/srv/keycloak/password"; + passwordFile = "${config.age.secrets.keycloak.path}"; }; settings = { diff --git a/system/services/mail/default.nix b/system/services/mail/default.nix new file mode 100644 index 0000000..382a87f --- /dev/null +++ b/system/services/mail/default.nix @@ -0,0 +1,41 @@ +{lib, ...}: let + all_admins = [ + "sils@vhack.eu" + "soispha@vhack.eu" + "nightingale@vhack.eu" + ]; + users = import ./users.nix {}; +in { + mailserver = + lib.recursiveUpdate { + enable = true; + fqdn = "server1.vhack.eu"; + + useFsLayout = true; + + extraVirtualAliases = { + "abuse@vhack.eu" = all_admins; + "postmaster@vhack.eu" = all_admins; + "admin@vhack.eu" = all_admins; + }; + + mailDirectory = "/var/lib/mail/vmail"; + dkimKeyDirectory = "/var/lib/mail/dkim"; + sieveDirectory = "/var/lib/mail/sieve"; + backup.snapshotRoot = "/var/lib/mail/backup"; + + enableImap = false; + enableImapSsl = true; + enablePop3 = false; + enablePop3Ssl = true; + # SMTP + enableSubmission = false; + enableSubmissionSsl = true; + openFirewall = true; + + keyFile = "/var/lib/acme/server1.vhack.eu/key.pem"; + certificateScheme = "acme"; + certificateFile = "/var/lib/acme/server1.vhack.eu/fullchain.pem"; + } + users; +} diff --git a/system/mail/users.nix b/system/services/mail/users.nix Binary files differindex f3264a1..f3264a1 100644 --- a/system/mail/users.nix +++ b/system/services/mail/users.nix diff --git a/system/services/matrix/default.nix b/system/services/matrix/default.nix index d49fda2..e35c129 100644 --- a/system/services/matrix/default.nix +++ b/system/services/matrix/default.nix @@ -55,7 +55,6 @@ in { enable = true; dataDir = "/srv/matrix/data"; configFile = "/srv/matrix"; - extraConfigFiles = ["/srv/matrix/oid/config.yaml"]; settings = { media_store_path = "/srv/matrix/media_store"; server_name = "vhack.eu"; diff --git a/system/services/minecraft/default.nix b/system/services/minecraft/default.nix index e69ffb1..e659af0 100644 --- a/system/services/minecraft/default.nix +++ b/system/services/minecraft/default.nix @@ -7,7 +7,7 @@ enable = true; declarative = true; eula = true; - dataDir = "/srv/minecraft"; + dataDir = "/var/lib/minecraft"; openFirewall = true; jvmOpts = "-Xmx8192M -Xms8192M"; whitelist = { diff --git a/system/services/nginx/default.nix b/system/services/nginx/default.nix index 6753fb0..404c167 100644 --- a/system/services/nginx/default.nix +++ b/system/services/nginx/default.nix @@ -2,6 +2,14 @@ imports = [ ./hosts.nix ]; + security.acme = { + acceptTerms = true; + defaults = { + email = "admin@vhack.eu"; + webroot = "/var/lib/acme/acme-challenge"; + }; + }; + networking.firewall = { allowedTCPPorts = [80 443]; }; diff --git a/system/services/nginx/hosts.nix b/system/services/nginx/hosts.nix Binary files differindex 684bb68..1590756 100644 --- a/system/services/nginx/hosts.nix +++ b/system/services/nginx/hosts.nix diff --git a/system/services/nix-sync/default.nix b/system/services/nix-sync/default.nix new file mode 100644 index 0000000..44348c0 --- /dev/null +++ b/system/services/nix-sync/default.nix @@ -0,0 +1,262 @@ +{ + config, + lib, + pkgs, + ... +}: let + cfg = config.services.nix-sync; + + mkTimer = name: repo: { + description = "Nix sync ${name} timer"; + wantedBy = ["timers.target"]; + timerConfig = { + OnActiveSec = repo.interval; + }; + after = ["network-online.target"]; + }; + + parents = path: let + split_path = builtins.split "/" path; + filename = builtins.elemAt split_path (builtins.length split_path - 1); + in + lib.strings.removeSuffix "/" (builtins.replaceStrings [filename] [""] path); + esa = lib.strings.escapeShellArg; + mkUnit = name: repo: let + optionalPathSeparator = + if lib.strings.hasPrefix "/" repo.path + then "" + else "/"; + repoCachePath = cfg.cachePath + optionalPathSeparator + repo.path; + execStartScript = pkgs.writeScript "nix-sync-exec" '' + #! /usr/bin/env dash + export XDG_CACHE_HOME="$CACHE_DIRECTORY"; + cd ${esa repoCachePath}; + + git fetch + origin="$(git rev-parse @{u})"; + branch="$(git rev-parse @)"; + + if ! [ "$origin" = "$branch" ]; then + git pull; + + out_paths=$(mktemp); + nix build . --print-out-paths --experimental-features 'nix-command flakes' > "$out_paths"; + [ "$(wc -l < "$out_paths")" -gt 1 ] && (echo "To many out-paths"; exit 1) + out_path="$(cat "$out_paths")"; + rm ${esa repo.path}; + ln -s "$out_path" ${esa repo.path}; + rm "$out_paths"; + fi + ''; + execStartPreScript = '' + export XDG_CACHE_HOME="$CACHE_DIRECTORY"; + + if ! [ -d ${esa repoCachePath}/.git ]; then + mkdir --parents ${esa repoCachePath}; + git clone ${esa repo.uri} ${esa repoCachePath}; + + out_paths=$(mktemp); + nix build ${esa repoCachePath} --print-out-paths --experimental-features 'nix-command flakes' > "$out_paths"; + [ "$(wc -l < "$out_paths")" -gt 1 ] && (echo "To many out-paths"; exit 1) + out_path="$(cat "$out_paths")"; + ln -s "$out_path" ${esa repo.path}; + rm "$out_paths"; + fi + + if ! [ -L ${esa repo.path} ]; then + cd ${esa repoCachePath}; + + git pull; + + out_paths=$(mktemp); + nix build . --print-out-paths --experimental-features 'nix-command flakes' > "$out_paths"; + [ "$(wc -l < "$out_paths")" -gt 1 ] && (echo "To many out-paths"; exit 1) + out_path="$(cat "$out_paths")"; + + [ -d ${esa repo.path} ] && rm -d ${esa repo.path}; + [ -e ${esa repo.path} ] && rm ${esa repo.path}; + + ln -s "$out_path" ${esa repo.path}; + rm "$out_paths"; + fi + ''; + in { + description = "Nix Sync ${name}"; + wantedBy = ["default.target"]; + after = ["network.target"]; + path = with pkgs; [openssh git nix mktemp coreutils dash]; + preStart = execStartPreScript; + + serviceConfig = { + ExecStart = execStartScript; + Restart = "on-abort"; + # User and group + User = cfg.user; + Group = cfg.group; + # Runtime directory and mode + RuntimeDirectory = "nix-sync"; + RuntimeDirectoryMode = "0750"; + # Cache directory and mode + CacheDirectory = "nix-sync"; + CacheDirectoryMode = "0750"; + # Logs directory and mode + LogsDirectory = "nix-sync"; + LogsDirectoryMode = "0750"; + # Proc filesystem + ProcSubset = "all"; + ProtectProc = "invisible"; + # New file permissions + UMask = "0027"; # 0640 / 0750 + # Capabilities + AmbientCapabilities = ["CAP_CHOWN"]; + CapabilityBoundingSet = ["CAP_CHOWN"]; + # Security + NoNewPrivileges = true; + # Sandboxing (sorted by occurrence in https://www.freedesktop.org/software/systemd/man/systemd.exec.html) + ReadWritePaths = ["${esa (parents repo.path)}" "-${esa repoCachePath}" "-${esa cfg.cachePath}"]; + ReadOnlyPaths = ["/nix"]; + ProtectSystem = "strict"; + ProtectHome = true; + PrivateTmp = true; + PrivateDevices = true; + ProtectHostname = true; + ProtectClock = true; + ProtectKernelTunables = true; + ProtectKernelModules = true; + ProtectKernelLogs = true; + ProtectControlGroups = true; + RestrictAddressFamilies = ["AF_UNIX" "AF_INET" "AF_INET6"]; + RestrictNamespaces = true; + LockPersonality = true; + MemoryDenyWriteExecute = true; + RestrictRealtime = true; + RestrictSUIDSGID = true; + RemoveIPC = true; + PrivateMounts = true; + # System Call Filtering + SystemCallArchitectures = "native"; + SystemCallFilter = ["~@cpu-emulation @debug @keyring @mount @obsolete @privileged @setuid"]; + }; + }; + + services = + lib.mapAttrs' (name: repo: { + name = "nix-sync-${name}"; + value = mkUnit name repo; + }) + cfg.repositories; + timers = + lib.mapAttrs' (name: repo: { + name = "nix-sync-${name}"; + value = mkTimer name repo; + }) + cfg.repositories; + + # generate the websites directory, so systemd can mount it read write + generatedDirectories = + lib.mapAttrsToList ( + _: repo: "d ${esa (parents repo.path)} 0755 ${cfg.user} ${cfg.group}" + ) + cfg.repositories; + + repositoryType = lib.types.submodule ({name, ...}: { + options = { + name = lib.mkOption { + internal = true; + default = name; + type = lib.types.str; + description = "The name that should be given to this unit."; + }; + + path = lib.mkOption { + type = lib.types.str; + description = "The path at which to sync the repository"; + }; + + uri = lib.mkOption { + type = lib.types.str; + example = "ssh://user@example.com:/~[user]/path/to/repo.git"; + description = '' + The URI of the remote to be synchronized. This is only used in the + event that the directory does not already exist. See + <link xlink:href="https://git-scm.com/docs/git-clone#_git_urls"/> + for the supported URIs. + ''; + }; + + interval = lib.mkOption { + type = lib.types.int; + default = 500; + description = '' + The interval, specified in seconds, at which the synchronization will + be triggered. + ''; + }; + }; + }); +in { + options = { + services.nix-sync = { + enable = lib.mkEnableOption "nix-sync services"; + + user = lib.mkOption { + type = lib.types.str; + default = "nix-sync"; + description = lib.mdDoc "User account under which nix-sync units runs."; + }; + + group = lib.mkOption { + type = lib.types.str; + default = "nix-sync"; + description = lib.mdDoc "Group account under which nix-sync units runs."; + }; + + cachePath = lib.mkOption { + type = lib.types.str; + default = "/var/lib/nix-sync"; + description = lib.mdDoc '' + Where to cache git directories. Should not end with a slash ("/") + ''; + }; + + repositories = lib.mkOption { + type = with lib.types; attrsOf repositoryType; + description = '' + The repositories that should be synchronized. + ''; + }; + }; + }; + + config = lib.mkIf cfg.enable { + assertions = [ + { + assertion = !lib.strings.hasSuffix "/" cfg.cachePath; + message = "Your cachePath ('${cfg.cachePath}') ends with a slash ('/'), please use: '${lib.strings.removeSuffix "/" cfg.cachePath}'."; + } + ]; + + systemd.tmpfiles.rules = + generatedDirectories; + + systemd.services = services; + systemd.timers = timers; + users.users = + if cfg.user == "nix-sync" + then { + nix-sync = { + group = "${cfg.group}"; + isSystemUser = true; + }; + } + else lib.warnIf (cfg.user != "nix-sync") "The user (${cfg.user}) is not \"nix-sync\", thus you are responible for generating it."; + users.groups = + if cfg.group == "nix-sync" + then { + nix-sync = { + members = ["${cfg.user}"]; + }; + } + else lib.warnIf (cfg.group != "nix-sync") "The group (${cfg.group}) is not \"nix-sync\", thus you are responible for generating it."; + }; +} diff --git a/system/services/openssh/default.nix b/system/services/openssh/default.nix new file mode 100644 index 0000000..46b7ffd --- /dev/null +++ b/system/services/openssh/default.nix @@ -0,0 +1,17 @@ +{...}: { + services.openssh = { + enable = true; + settings.PasswordAuthentication = false; + hostKeys = [ + { + # See the explanation for this in /system/impermanence/mods/openssh.nix + # path = "/var/lib/sshd/ssh_host_ed25519_key"; + + # FIXME: Remove this workaround + path = "/srv/var/lib/sshd/ssh_host_ed25519_key"; + rounds = 1000; + type = "ed25519"; + } + ]; + }; +} diff --git a/system/services/opensshd/default.nix b/system/services/opensshd/default.nix deleted file mode 100644 index 1bb37ee..0000000 --- a/system/services/opensshd/default.nix +++ /dev/null @@ -1,13 +0,0 @@ -{...}: { - services.openssh = { - enable = true; - settings.PasswordAuthentication = false; - hostKeys = [ - { - path = "/srv/sshd/ssh_host_ed25519_key"; - rounds = 1000; - type = "ed25519"; - } - ]; - }; -} diff --git a/system/users/default.nix b/system/users/default.nix index 3555221..822c94b 100644 --- a/system/users/default.nix +++ b/system/users/default.nix @@ -1,56 +1,53 @@ {pkgs, ...}: { - users.mutableUsers = false; - users.defaultUserShell = pkgs.zsh; + users = { + mutableUsers = false; + defaultUserShell = pkgs.zsh; + users = { + root = { + initialHashedPassword = null; # to lock root + openssh.authorizedKeys.keys = []; + }; - users.users = { - root = { - #uid = 0; - initialHashedPassword = null; # to lock root - openssh.authorizedKeys.keys = [ - ]; - }; + sils = { + name = "sils"; + isNormalUser = true; + home = "/home/sils"; + initialHashedPassword = "$y$jFT$KpFnahVCE9JbE.5P3us8o.$ZzSxCusWqe3sL7b6DLgOXNNUf114tiiptM6T8lDxtKC"; + uid = 1000; + extraGroups = [ + "wheel" + ]; + openssh.authorizedKeys.keys = [ + "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG63gxw8JePmrC8Fni0pLV4TnPBhCPmSV9FYEdva+6s7 sils" + ]; + }; - sils = { - name = "sils"; - isNormalUser = true; - home = "/srv/home/sils"; - initialHashedPassword = "$y$jFT$KpFnahVCE9JbE.5P3us8o.$ZzSxCusWqe3sL7b6DLgOXNNUf114tiiptM6T8lDxtKC"; - uid = 1000; - extraGroups = [ - "wheel" - ]; - openssh.authorizedKeys.keys = [ - "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG63gxw8JePmrC8Fni0pLV4TnPBhCPmSV9FYEdva+6s7 sils" - ]; - }; + soispha = { + name = "soispha"; + isNormalUser = true; + home = "/home/soispha"; + initialHashedPassword = "$y$jFT$3.8XmUyukZvpExMUxDZkI.$IVrJgm8ysNDF/0vDD2kF6w73ozXgr1LMVRNN4Bq7pv1"; + uid = 1001; + extraGroups = [ + "wheel" + ]; + openssh.authorizedKeys.keys = [ + "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGBFuTNNn71Rhfnop2cdz3r/RhWWlCePnSBOhTBbu2ME soispha" + ]; + }; - soispha = { - name = "soispha"; - isNormalUser = true; - home = "/srv/home/soispha"; - initialHashedPassword = "$y$jFT$3.8XmUyukZvpExMUxDZkI.$IVrJgm8ysNDF/0vDD2kF6w73ozXgr1LMVRNN4Bq7pv1"; - uid = 1001; - extraGroups = [ - "wheel" - ]; - openssh.authorizedKeys.keys = [ - "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGBFuTNNn71Rhfnop2cdz3r/RhWWlCePnSBOhTBbu2ME soispha" - ]; - }; - - nightingale = { - name = "nightingale"; - isNormalUser = true; - home = "/srv/home/nightingale"; - initialHashedPassword = null; # TODO CHANGE - uid = 1002; - extraGroups = [ - "wheel" - ]; - openssh.authorizedKeys.keys = [ - ]; + nightingale = { + name = "nightingale"; + isNormalUser = true; + home = "/home/nightingale"; + initialHashedPassword = null; # TODO CHANGE + uid = 1002; + extraGroups = [ + "wheel" + ]; + openssh.authorizedKeys.keys = [ + ]; + }; }; }; } -# vim: ts=2 - |