feat: experiment with kanidm and acme dns-01. add common conditional locations to impermanence

README.md

@@ -93,7 +93,7 @@ then select the host in the fzf menu
 ## Stuff
 
 - Secrets can be created/edited by running `nix run .#edit-secret some/secret.age`
-- Secrets can be rekeyed by running `nix run .#rekey` (you will be prompted to do so in an error message if neccessary)
+- Secrets can be rekeyed by running `nix run .#rekey` (you will also be prompted to do so in an error message if neccessary)
 
 To be able to decrypt the repository-wide secrets transparently on a host that
 is _not_ managed by this config, you will need to <sub>(be me and)</sub> run
@@ -110,10 +110,10 @@ all commands using these extra parameters, or permanently add the following the
 
 ## Misc
 
-Generate self-signed cert:
+Generate self-signed cert, e.g. for kanidm internal communication to proxy:
 
 ```bash
 openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 -nodes \
-  -keyout zackbiene-selfcert.key -out zackbiene-selfcert.crt -subj \
+  -keyout selfcert.key -out selfcert.crt -subj \
   "/CN=example.com" -addext "subjectAltName=DNS:example.com,DNS:sub1.example.com,DNS:sub2.example.com,IP:10.0.0.1"
 ```

hosts/common/core/impermanence.nix

@@ -1,4 +1,8 @@
 {
+  config,
+  lib,
+  ...
+}: {
   # State that should be kept across reboots, but is otherwise
   # NOT important information in any way that needs to be backed up.
   #environment.persistence."/nix/state" = {
@@ -20,10 +24,90 @@
       "/etc/ssh/ssh_host_ed25519_key"
       "/etc/ssh/ssh_host_ed25519_key.pub"
     ];
-    directories = [
-      "/var/lib/nixos"
-      "/var/lib/systemd/coredump"
-      "/var/log"
-    ];
+    directories =
+      [
+        {
+          directory = "/var/lib/nixos";
+          user = "root";
+          group = "root";
+          mode = "0755";
+        }
+        {
+          directory = "/var/lib/systemd";
+          user = "root";
+          group = "root";
+          mode = "0755";
+        }
+        {
+          directory = "/var/log";
+          user = "root";
+          group = "root";
+          mode = "0755";
+        }
+        #{ directory = "/tmp"; user = "root"; group = "root"; mode = "1777"; }
+        #{ directory = "/var/tmp"; user = "root"; group = "root"; mode = "1777"; }
+        {
+          directory = "/var/spool";
+          user = "root";
+          group = "root";
+          mode = "0777";
+        }
+      ]
+      ++ lib.optionals config.networking.wireless.iwd.enable [
+        {
+          directory = "/var/lib/iwd";
+          user = "root";
+          group = "root";
+          mode = "0700";
+        }
+      ]
+      ++ lib.optionals (config.services.kea.dhcp4.enable || config.services.kea.dhcp6.enable) [
+        {
+          directory = "/var/lib/kea";
+          user = "kea";
+          group = "kea";
+          mode = "0755";
+        }
+      ]
+      ++ lib.optionals config.services.gitea.enable [
+        {
+          directory = "/var/lib/gitea";
+          user = "gitea";
+          group = "gitea";
+          mode = "0755";
+        }
+      ]
+      ++ lib.optionals config.security.acme.acceptTerms [
+        {
+          directory = "/var/lib/acme";
+          user = "acme";
+          group = "acme";
+          mode = "0755";
+        }
+      ]
+      ++ lib.optionals config.services.printing.enable [
+        {
+          directory = "/var/lib/cups";
+          user = "root";
+          group = "root";
+          mode = "0755";
+        }
+      ]
+      ++ lib.optionals config.services.fail2ban.enable [
+        {
+          directory = "/var/lib/fail2ban";
+          user = "fail2ban";
+          group = "fail2ban";
+          mode = "0750";
+        }
+      ]
+      ++ lib.optionals config.services.opendkim.enable [
+        {
+          directory = "/var/lib/postgresql";
+          user = "postgres";
+          group = "postgres";
+          mode = "0755";
+        }
+      ];
   };
 }

hosts/common/core/issue.nix

@@ -2,6 +2,7 @@ let
   # IP addresses: ${"${interface} \e{halfbright}\4{${interface}}\e{reset} \e{halfbright}\6{${interface}}\e{reset}"}
   issue_text = ''
     \d  \t
+    \e{halfbright}\4\e{reset} \e{halfbright}\6\e{reset}
     This is \e{cyan}\n\e{reset} [\e{lightblue}\l\e{reset}] (\s \m \r)
 
   '';

hosts/ward/default.nix

@@ -3,7 +3,19 @@
   nixos-hardware,
   pkgs,
   ...
-}: {
+}: let
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  # TODO byebyebye
+  inherit (config.repo.secrets.local) acme;
+  auth.domain = config.repo.secrets.local.auth.domain;
+in {
   imports = [
     nixos-hardware.common-cpu-intel
     nixos-hardware.common-pc-ssd
@@ -33,15 +45,26 @@
     };
   in {
     test = defineVm 11;
-
-    #nginx = defineVm 12;
+    #ddclient = defineVm 11;
+    nginx = defineVm 12;
     #kanidm = defineVm 13;
     #gitea = defineVm 14;
     #vaultwarden = defineVm 15;
-    #samba = defineVm 16;
+    #samba+wsdd = defineVm 16;
     #fasten-health = defineVm 17;
     #immich = defineVm 18;
     #paperless = defineVm 19;
+    #radicale = defineVm 20;
+    #minecraft = defineVm 21;
+
+    #grafana
+    #loki
+
+    #maddy = defineVm 19;
+    #anonaddy = defineVm 19;
+
+    #automatic1111 = defineVm 19;
+    #invokeai = defineVm 19;
 
     #kanidm = defineVm 12 // {
     #  configPath = ./vm-test.nix;
@@ -51,4 +74,162 @@
   microvm.vms.test.config = {
     rekey.hostPubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBXXjI6uB26xOF0DPy/QyLladoGIKfAtofyqPgIkCH/g";
   };
+
+  microvm.vms.nginx.config = {
+    lib,
+    config,
+    parentNodeName,
+    ...
+  }: {
+    rekey.hostPubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN2TxWynLb8V9SP45kFqsoCWhe/dG8N1xWNuJG5VQndq";
+
+    rekey.secrets."kanidm-self-signed.crt" = {
+      file = ./secrets/kanidm-self-signed.crt.age;
+      mode = "440";
+      owner = "nginx";
+      group = "kanidm";
+    };
+    rekey.secrets."kanidm-self-signed.key" = {
+      file = ./secrets/kanidm-self-signed.key.age;
+      mode = "440";
+      owner = "nginx";
+      group = "kanidm";
+    };
+    rekey.secrets."dhparams.pem" = {
+      # TODO make own?
+      file = ../zackbiene/secrets/dhparams.pem.age;
+      mode = "440";
+      group = "nginx";
+    };
+
+    networking.hosts = {
+      "192.168.100.12" = [auth.domain];
+    };
+
+    rekey.secrets.acme-credentials = {
+      file = ./secrets/acme-credentials.age;
+      mode = "440";
+      group = "acme";
+    };
+    security.acme = {
+      acceptTerms = true;
+      defaults = {
+        inherit (acme) email;
+        dnsProvider = "cloudflare";
+        credentialsFile = config.rekey.secrets.acme-credentials.path;
+        dnsPropagationCheck = true;
+      };
+      certs = lib.genAttrs acme.domains (domain: {
+        extraDomainNames = ["*.${domain}"];
+      });
+    };
+    users.groups.acme.members = ["nginx"];
+
+    # TODO needed in my current testing network that has no ipv6 connectivity
+    # TODO but these should use fallback......... something's wrong
+    systemd.network.networks."10-wan".networkConfig.DNS = ["1.1.1.1" "8.8.8.8"];
+
+    # TODO reload nginx when acme is renewed
+
+    # TODO make default nginx config in core to reduce boilerplate?
+    services.nginx = let
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO not implemented well
+      # TODO (acme.domains is very specific)
+      # TODO (security.acme causes recursion)
+      matchingWildcardCert = domain: let
+        # Filter all certs that are wildcard certs and which match the given domain
+        matchingCerts =
+          lib.filter
+          (x: !lib.hasInfix "." (lib.removeSuffix ".${x}" domain))
+          acme.domains;
+      in
+        assert lib.assertMsg (matchingCerts != []) "No wildcard certificate was defined that matches ${domain}";
+          lib.head matchingCerts;
+    in {
+      enable = true;
+
+      recommendedBrotliSettings = true;
+      recommendedGzipSettings = true;
+      recommendedOptimisation = true;
+      recommendedProxySettings = true;
+      recommendedTlsSettings = true;
+
+      # SSL config
+      sslCiphers = "EECDH+AESGCM:EDH+AESGCM:!aNULL";
+      sslDhparam = config.rekey.secrets."dhparams.pem".path;
+      commonHttpConfig = ''
+        error_log syslog:server=unix:/dev/log;
+        access_log syslog:server=unix:/dev/log;
+        ssl_ecdh_curve secp384r1;
+      '';
+
+      upstreams."kanidm" = {
+        servers."${config.extra.wireguard."${parentNodeName}-local-vms".ipv4}:8300" = {};
+        extraConfig = ''
+          zone kanidm 64k;
+          keepalive 2;
+        '';
+      };
+      virtualHosts.${auth.domain} = {
+        forceSSL = true;
+        useACMEHost = matchingWildcardCert auth.domain;
+        locations."/".proxyPass = "https://kanidm";
+        # Allow using self-signed certs to satisfy kanidm's requirement
+        # for TLS connections. (This is over wireguard anyway)
+        extraConfig = ''
+          proxy_ssl_verify off;
+        '';
+      };
+    };
+
+    networking.firewall.allowedTCPPorts = [80 443];
+
+    networking.nftables.firewall.rules = lib.mkForce {
+      local-vms-to-local.allowedTCPPorts = [8300];
+    };
+
+    # systemd.services.kanidm = let
+    #   cfg = config.services.kanidm;
+    #   certName = config.services.nginx.virtualHosts.${cfg.serverSettings.domain}.useACMEHost;
+    # in {
+    #   requires = [ "acme-finished-${certName}.target" ];
+    #   serviceConfig.LoadCredential = let
+    #     certDir = config.security.acme.certs.${certName}.directory;
+    #   in [
+    #     "fullchain.pem:${certDir}/fullchain.pem"
+    #     "key.pem:${certDir}/key.pem"
+    #   ];
+    # };
+
+    services.kanidm = {
+      enableServer = true;
+      # enablePAM = true;
+      serverSettings = {
+        inherit (auth) domain;
+        origin = "https://${config.services.kanidm.serverSettings.domain}";
+        #tls_chain = "/run/credentials/kanidm.service/fullchain.pem";
+        #tls_key = "/run/credentials/kanidm.service/key.pem";
+        tls_chain = config.rekey.secrets."kanidm-self-signed.crt".path;
+        tls_key = config.rekey.secrets."kanidm-self-signed.key".path;
+        bindaddress = "${config.extra.wireguard."${parentNodeName}-local-vms".ipv4}:8300";
+        trust_x_forward_for = true;
+      };
+
+      enableClient = true;
+      clientSettings = {
+        uri = config.services.kanidm.serverSettings.origin;
+        verify_ca = true;
+        verify_hostnames = true;
+      };
+    };
+
+    environment.systemPackages = [pkgs.kanidm];
+  };
 }

hosts/ward/grafana.nix

@@ -1 +0,0 @@
-{}

hosts/ward/net.nix

@@ -3,7 +3,7 @@
   lib,
   ...
 }: let
-  inherit (config.lib.net) ip cidr;
+  inherit (config.lib.net) cidr;
 
   lanCidrv4 = "192.168.100.0/24";
   lanCidrv6 = "fd00::/64";
@@ -165,7 +165,7 @@ in {
             interface = "lan-self";
             subnet = lanCidrv4;
             pools = [
-              {pool = "${cidr.host 20 lanCidrv4} - ${cidr.host (-6) lanCidrv4}";}
+              {pool = "${cidr.host 40 lanCidrv4} - ${cidr.host (-6) lanCidrv4}";}
             ];
             option-data = [
               {

hosts/ward/node_exporter.nix

@@ -1 +0,0 @@
-{}

hosts/ward/prometheus.nix

@@ -1 +0,0 @@
-{}

hosts/ward/samba.nix

@@ -1 +0,0 @@
-{}

hosts/ward/vaultwarden.nix

@@ -42,14 +42,14 @@
 
   services.nginx = {
     upstreams."vaultwarden" = {
-      servers = {"localhost:8012" = {};};
+      servers."localhost:8012" = {};
       extraConfig = ''
         zone vaultwarden 64k;
         keepalive 2;
       '';
     };
     upstreams."vaultwarden-websocket" = {
-      servers = {"localhost:3012" = {};};
+      servers."localhost:3012" = {};
       extraConfig = ''
         zone vaultwarden-websocket 64k;
         keepalive 2;

hosts/zackbiene/esphome.nix

@@ -17,7 +17,7 @@
 
   services.nginx = {
     upstreams."esphome" = {
-      servers = {"unix:/run/esphome/esphome.sock" = {};};
+      servers."unix:/run/esphome/esphome.sock" = {};
       extraConfig = ''
         zone esphome 64k;
         keepalive 2;

hosts/zackbiene/home-assistant.nix

@@ -108,7 +108,7 @@ in {
 
   services.nginx = {
     upstreams."homeassistant" = {
-      servers = {"localhost:${toString haPort}" = {};};
+      servers."localhost:${toString haPort}" = {};
       extraConfig = ''
         zone homeassistant 64k;
         keepalive 2;

hosts/zackbiene/net.nix

@@ -5,8 +5,8 @@
 }: let
   inherit (config.lib.net) cidr;
 
-  net.iot.ipv4cidr = "10.90.0.1/24";
-  net.iot.ipv6cidr = "fd90::1/64";
+  iotCidrv4 = "10.90.0.0/24";
+  iotCidrv6 = "fd90::/64";
 in {
   networking.hostId = config.repo.secrets.local.networking.hostId;
 
@@ -23,7 +23,10 @@ in {
       linkConfig.RequiredForOnline = "routable";
     };
     "10-wlan1" = {
-      address = [net.iot.ipv4cidr net.iot.ipv6cidr];
+      address = [
+        (cidr.hostCidr 1 iotCidrv4)
+        (cidr.hostCidr 1 iotCidrv6)
+      ];
       matchConfig.MACAddress = config.repo.secrets.local.networking.interfaces.wlan1.mac;
       linkConfig.RequiredForOnline = "no";
     };

hosts/zackbiene/nginx.nix

@@ -34,6 +34,8 @@
     sslCiphers = "EECDH+AESGCM:EDH+AESGCM:!aNULL";
     sslDhparam = config.rekey.secrets."dhparams.pem".path;
     commonHttpConfig = ''
+      error_log syslog:server=unix:/dev/log;
+      access_log syslog:server=unix:/dev/log;
       ssl_ecdh_curve secp384r1;
     '';
   };

hosts/zackbiene/zigbee2mqtt.nix

@@ -32,7 +32,7 @@
 
   services.nginx = {
     upstreams."zigbee2mqtt" = {
-      servers = {"localhost:8072" = {};};
+      servers."localhost:8072" = {};
       extraConfig = ''
         zone zigbee2mqtt 64k;
         keepalive 2;

modules/microvms.nix

@@ -32,6 +32,7 @@
     types
     ;
 
+  parentConfig = config;
   cfg = config.extra.microvms;
   inherit (config.extra.microvms) vms;
   inherit (config.lib) net;
@@ -103,7 +104,7 @@
         // node.specialArgs;
       inherit (node) pkgs;
       inherit (vmCfg) autostart;
-      config = {
+      config = {config, ...}: {
         imports = [microvm.microvm] ++ cfg.commonImports ++ node.imports;
 
         microvm = {
@@ -156,7 +157,7 @@
         extra.networking.renameInterfacesByMac.${vmCfg.networking.mainLinkName} = mac;
 
         systemd.network.networks = let
-          wgConfig = config.extra.wireguard."${nodeName}-local-vms".unitConfName;
+          wgConfig = parentConfig.extra.wireguard."${nodeName}-local-vms".unitConfName;
         in {
           # Remove requirement for the wireguard interface to come online,
           # to allow microvms to be deployed more easily (otherwise they
@@ -204,13 +205,19 @@
         networking.nftables.firewall = {
           zones = mkForce {
             "${vmCfg.networking.mainLinkName}".interfaces = [vmCfg.networking.mainLinkName];
-            local-vms.interfaces = ["local-vms"];
+            local-vms.interfaces = [config.extra.wireguard."${nodeName}-local-vms".linkName];
           };
 
           rules = mkForce {
             "${vmCfg.networking.mainLinkName}-to-local" = {
               from = [vmCfg.networking.mainLinkName];
               to = ["local"];
+
+              inherit
+                (config.networking.firewall)
+                allowedTCPPorts
+                allowedUDPPorts
+                ;
             };
 
             local-vms-to-local = {

secrets/wireguard/ward-local-vms/keys/ward-nginx.age

@@ -0,0 +1,10 @@
+age-encryption.org/v1
+-> X25519 +S2DEXP2FxIlF3HeWNul/QHE4fuVwv7ausZO8C1Yvko
+USoULC2zp6mkLEGQFc4ELAotOQkq85yjfC3ImZQe6g0
+-> piv-p256 xqSe8Q AuVsMp2nyVB5I6ae7X4rnTT6gH/AyOwkVH5C8qRzenCu
+QLdaqASucS24wx5LuoFVD+LBdgsd+wGITMhJBOCrqpY
+-> z&m(b4Nw-grease ,&}.>' UWDXz
+adqzHHC2X08jrZz0h0y+MuJHM6/kuSUNad8+19cY88IRTF2ujQnoDVDS
+--- 8dc8Ta84I8RY7YGIcEuZStaEncGXv1uwJw2ncy3QgtU
+Æàr}÷jãEŒA]ˆ¥ÒW˜4gù3“æòAº"ð¹È¤¡Êš
+™ru3Î_…E �/ŽöœztKÉß”ë¢Ýˆ°ÔI/°‚‹}Ïò*

secrets/wireguard/ward-local-vms/keys/ward-nginx.pub

@@ -0,0 +1 @@
+Zs0W99JiuCv1F3NMTp/PcMBrt1bzWttJWNEh00Freyw=

secrets/wireguard/ward-local-vms/psks/ward-nginx+ward-test.age

@@ -0,0 +1,9 @@
+age-encryption.org/v1
+-> X25519 95jd7mMbmilIpQbvDmu48FfMFZZbkioExF8KTw3fNXI
+CxWXmbD6kArjmJ2Y4lYVcwaQghWyJzS6DsQ4djspUf4
+-> piv-p256 xqSe8Q A13AOGXe31ASOihylki3jl8xCxp2bh2lYnzQC44Rbe10
++R8gYDIFyANNPLvdQcq8+67dy+tFcVqS/7rYAbN7pz8
+-> 6q.AXp(-grease
+GJOOcphfNDKW
+--- E/iTzPRKqfS52YBWVcbVAak5koIxmdanzTXRt/5MZnM
+ÃÛ¸›6çW®ní?W}7Jp[Bêo|T¸:ûÓÞT¹¿˜]Ykû¤¿ŠBŸ‡èò‰oÞ½6zqVŒ’?+ˆë^Mž�*/ˆ¶Ö
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