repo: ./nixos -> ./os

20 files changed, 1151 insertions, 0 deletions

diff --git a/os/kay/configuration.nix b/os/kay/configuration.nix
new file mode 100644
index 0000000..24cc246
--- /dev/null
+++ b/os/kay/configuration.nix
@@ -0,0 +1,18 @@
+{ ... }:
+
+{
+  imports = [
+    ../common/configuration.nix
+    ./hardware-configuration.nix
+
+    ./modules/network.nix
+    ./modules/www.nix
+    ./modules/sftp.nix
+    ./modules/acme.nix
+    ./modules/mail.nix
+    ./modules/dns
+    ./modules/sshfwd.nix
+  ];
+
+  boot.consoleLogLevel = 3;
+}
diff --git a/os/kay/hardware-configuration.nix b/os/kay/hardware-configuration.nix
new file mode 100644
index 0000000..5e2efdf
--- /dev/null
+++ b/os/kay/hardware-configuration.nix
@@ -0,0 +1,39 @@
+{ modulesPath, ... }:
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot = {
+    loader = {
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+    };
+
+    kernelModules = [ "kvm-intel" ];
+    blacklistedKernelModules = [ "nouveau" ];
+    initrd.availableKernelModules = [
+      "xhci_pci"
+      "ehci_pci"
+      "ahci"
+      "usb_storage"
+      "usbhid"
+      "sd_mod"
+    ];
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/2eeacf49-c51e-4229-bd4a-ae437014725f";
+      fsType = "ext4";
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/A902-90BB";
+      fsType = "vfat";
+    };
+    "/hdd" = {
+      device = "/dev/disk/by-uuid/c941edb4-e393-4254-bbef-d1b3728290e9";
+      fsType = "ext4";
+      options = [ "nofail" ];
+    };
+  };
+}
diff --git a/os/kay/modules/acme.nix b/os/kay/modules/acme.nix
new file mode 100644
index 0000000..f4ded0a
--- /dev/null
+++ b/os/kay/modules/acme.nix
@@ -0,0 +1,23 @@
+{ config, pkgs, ... }: let
+  email = config.userdata.email;
+  domain = config.userdata.domain;
+
+  environmentFile =
+    pkgs.writeText "acme-dns" "RFC2136_NAMESERVER='[2001:470:ee65::1]:53'";
+in {
+  security.acme = {
+    acceptTerms = true;
+    defaults.email = email;
+
+    certs.${domain} = {
+      inherit domain;
+      extraDomainNames = [ "*.${domain}" ];
+
+      dnsProvider = "rfc2136";
+      dnsPropagationCheck = false; # local DNS server
+
+      inherit environmentFile;
+      group = config.services.nginx.group;
+    };
+  };
+}
diff --git a/os/kay/modules/cgit.nix b/os/kay/modules/cgit.nix
new file mode 100644
index 0000000..f8fb25c
--- /dev/null
+++ b/os/kay/modules/cgit.nix
@@ -0,0 +1,33 @@
+{ config, pkgs, ... }:
+
+let
+  domain = config.userdata.domain;
+  user = config.userdata.name;
+in
+{
+  environment.systemPackages = with pkgs; [
+    luajitPackages.luaossl
+    lua52Packages.luaossl
+  ];
+
+  services.cgit."git.${domain}" = {
+    enable = true;
+    nginx.virtualHost = "git.${domain}";
+    scanPath = "/var/lib/git";
+    settings = {
+      project-list = "/var/lib/git/project.list";
+      remove-suffix = 1;
+      enable-commit-graph = 1;
+      root-title = "${user}'s git repository";
+      root-desc = "how do i learn github anon";
+      source-filter = "${pkgs.cgit}/lib/cgit/filters/syntax-highlighting.py";
+      about-filter = "${pkgs.cgit}/lib/cgit/filters/about-formatting.sh";
+      readme = ":README.md";
+      footer = "";
+      enable-blame = 1;
+      clone-url = "https://git.${domain}/$CGIT_REPO_URL";
+      enable-log-filecount = 1;
+      enable-log-linecount = 1;
+    };
+  };
+}
diff --git a/os/kay/modules/dendrite.nix b/os/kay/modules/dendrite.nix
new file mode 100644
index 0000000..8277e21
--- /dev/null
+++ b/os/kay/modules/dendrite.nix
@@ -0,0 +1,108 @@
+{ config, lib, pkgs, ... }:
+
+let
+  domain = config.userdata.domain;
+  database = {
+    connection_string = "postgres:///dendrite?host=/run/postgresql";
+    max_open_conns = 90;
+    max_idle_conns = 5;
+    conn_max_lifetime = -1;
+  };
+in
+{
+  sops.secrets."matrix-${domain}/key" = {};
+
+  services = {
+    postgresql = {
+      enable = true;
+      package = with pkgs; postgresql_15;
+      settings = {
+        log_timezone = config.time.timeZone;
+        listen_addresses = lib.mkForce "";
+      };
+      ensureDatabases = [ "dendrite" ];
+      ensureUsers = [{
+        name = "dendrite";
+        ensureDBOwnership = true;
+      }];
+      authentication = lib.mkForce "local all all trust";
+    };
+
+    dendrite = {
+      enable = true;
+      loadCredential = [
+        "private_key:${config.sops.secrets."matrix-${domain}/key".path}"
+      ];
+
+      settings = {
+        sync_api.search = {
+          enable = true;
+          index_path = "/var/lib/dendrite/searchindex";
+        };
+        global = {
+          server_name = domain;
+          private_key = "$CREDENTIALS_DIRECTORY/private_key";
+          trusted_third_party_id_servers = [
+            "matrix.org"
+            "vector.im"
+          ];
+          inherit database;
+        };
+        logging = [{
+          type = "std";
+          level = "warn";
+        }];
+        mscs = {
+          inherit database;
+          mscs = [ "msc2836" ];
+        };
+        sync_api = {
+          inherit database;
+          real_ip_header = "X-Real-IP";
+        };
+        media_api = {
+          inherit database;
+          dynamic_thumbnails = true;
+          max_file_size_bytes = 12800000000;
+        };
+        federation_api = {
+          inherit database;
+          send_max_retries = 8;
+          key_perspectives = [{
+            server_name = "matrix.org";
+            keys = [
+              {
+                key_id = "ed25519:auto";
+                public_key = "Noi6WqcDj0QmPxCNQqgezwTlBKrfqehY1u2FyWP9uYw";
+              }
+              {
+                key_id = "ed25519:a_RXGa";
+                public_key = "l8Hft5qXKn1vfHrg3p4+W8gELQVo8N13JkluMfmn2sQ";
+              }
+            ];
+          }];
+        };
+
+        app_service_api = {
+          inherit database;
+        };
+        room_server = {
+          inherit database;
+        };
+        push_server = {
+          inherit database;
+        };
+        relay_api = {
+          inherit database;
+        };
+        key_server = {
+          inherit database;
+        };
+        user_api = {
+          account_database = database;
+          device_database = database;
+        };
+      };
+    };
+  };
+}
diff --git a/os/kay/modules/dns/5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa.zone b/os/kay/modules/dns/5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa.zone
new file mode 100644
index 0000000..69b3524
--- /dev/null
+++ b/os/kay/modules/dns/5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa.zone
@@ -0,0 +1,14 @@
+$ORIGIN 5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa.
+$TTL 2d
+
+@	IN	SOA	ns1.sinanmohd.com.	sinan.sinanmohd.com. (
+			2024020400 ; serial
+			2h         ; refresh
+			5m         ; retry
+			1d         ; expire
+			5m )       ; nx ttl
+
+	IN	NS	ns1.sinanmohd.com.
+
+1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0	IN	PTR	ns1.sinanmohd.com.
+7.3.3.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0	IN	PTR	mail.sinanmohd.com.
diff --git a/os/kay/modules/dns/ddns.nix b/os/kay/modules/dns/ddns.nix
new file mode 100644
index 0000000..e6e417a
--- /dev/null
+++ b/os/kay/modules/dns/ddns.nix
@@ -0,0 +1,44 @@
+{ pkgs,  ... }: {
+   services.pppd.script = {
+      "02-ddns-ipv4" = {
+         runtimeInputs = with pkgs; [ coreutils knot-dns ];
+         type = "ip-up";
+
+         text = ''
+            cat <<- EOF | knsupdate
+                    server  2001:470:ee65::1
+                    zone    sinanmohd.com.
+
+                    update  delete  sinanmohd.com.       A
+                    update  add     sinanmohd.com.       180     A       $4
+
+                    update  delete  mail.sinanmohd.com.  A
+                    update  add     mail.sinanmohd.com.  180     A       $4
+
+                    send
+            EOF
+         '';
+       };
+
+      "02-ddns-ipv6" = {
+         runtimeInputs = with pkgs; [ coreutils knot-dns iproute2 gnugrep ];
+         type = "ipv6-up";
+
+         text = ''
+            while ! ipv6="$(ip -6 addr show dev "$1" scope global | grep -o '[0-9a-f:]*::1')"; do
+               sleep 0.2
+            done
+
+            cat <<- EOF | knsupdate
+                    server  2001:470:ee65::1
+                    zone    sinanmohd.com.
+
+                    update  delete  sinanmohd.com.  AAAA
+                    update  add     sinanmohd.com.  180     AAAA    $ipv6
+
+                    send
+            EOF
+         '';
+       };
+    };
+}
diff --git a/os/kay/modules/dns/default.nix b/os/kay/modules/dns/default.nix
new file mode 100644
index 0000000..1146cc3
--- /dev/null
+++ b/os/kay/modules/dns/default.nix
@@ -0,0 +1,137 @@
+{ config, pkgs, ... }: let
+  listen_addr = "2001:470:ee65::1";
+
+  acmeSOA = pkgs.writeText "acmeSOA" ''
+    $TTL 2d
+
+    @	IN	SOA	ns1.sinanmohd.com.	sinan.sinanmohd.com. (
+                        2024020505 ; serial
+                        2h         ; refresh
+                        5m         ; retry
+                        1d         ; expire
+                        5m )       ; nx ttl
+
+        IN	NS	ns1.sinanmohd.com.
+  '';
+in {
+  imports = [ ./ddns.nix ];
+
+  networking.firewall = {
+    allowedTCPPorts = [ 53 ];
+    allowedUDPPorts = [ 53 ];
+  };
+
+  sops.secrets.dns = {
+    owner = config.systemd.services.knot.serviceConfig.User;
+    group = config.systemd.services.knot.serviceConfig.Group;
+  };
+
+  services.knot = {
+    enable = true;
+    keyFiles = [ config.sops.secrets.dns.path ];
+
+    settings = {
+      server.listen = listen_addr;
+
+      remote = [
+        {
+          id = "ns1.he.net";
+          address = [ "2001:470:100::2" "216.218.130.2" ];
+          via = "2001:470:ee65::1";
+        }
+        {
+          id = "m.gtld-servers.net";
+          address = [ "2001:501:b1f9::30"  "192.55.83.30" ];
+        }
+      ];
+
+      submission = [{
+        id = "gtld-servers.net";
+        parent = "m.gtld-servers.net";
+      }];
+
+      policy = [{
+        id = "gtld-servers.net";
+        algorithm = "ecdsap384sha384";
+        ksk-lifetime = "365d";
+        ksk-submission = "gtld-servers.net";
+      }];
+
+      # generate TSIG key with keymgr -t name
+      acl = [
+        {
+          id = "ns1.he.net";
+          key = "ns1.he.net";
+          address = [ "2001:470:600::2" "216.218.133.2" ];
+          action = "transfer";
+        }
+        {
+          id = "localhost";
+          address = [ listen_addr ];
+          update-type = [ "A" "AAAA" ];
+          action = "update";
+        }
+        {
+          id = "acme";
+          address = [ listen_addr ];
+          update-type = [ "TXT" ];
+          action = "update";
+        }
+      ];
+
+      mod-rrl = [{
+        id = "default";
+        rate-limit = 200;
+        slip = 2;
+      }];
+
+      template = [
+        {
+          id = "default";
+          semantic-checks = "on";
+          global-module = "mod-rrl/default";
+        }
+        {
+          id = "master";
+          semantic-checks = "on";
+
+          dnssec-signing = "on";
+          dnssec-policy = "gtld-servers.net";
+
+          notify = [ "ns1.he.net" ];
+          acl = [ "ns1.he.net" "localhost" ];
+
+          zonefile-sync = "-1";
+          zonefile-load = "difference";
+        }
+        {
+          id = "acme";
+          semantic-checks = "on";
+          acl = [ "acme" ];
+
+          zonefile-sync = "-1";
+          zonefile-load = "difference";
+          journal-content = "changes";
+        }
+      ];
+
+      zone = [
+        {
+          domain = "sinanmohd.com";
+          file = ./sinanmohd.com.zone;
+          template = "master";
+        }
+        {
+          domain = "_acme-challenge.sinanmohd.com";
+          file = acmeSOA;
+          template = "acme";
+        }
+        {
+          domain = "5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa";
+          file = ./5.6.e.e.0.7.4.0.1.0.0.2.ip6.arpa.zone;
+        }
+      ];
+    };
+  };
+
+}
diff --git a/os/kay/modules/dns/sinanmohd.com.zone b/os/kay/modules/dns/sinanmohd.com.zone
new file mode 100644
index 0000000..0409efc
--- /dev/null
+++ b/os/kay/modules/dns/sinanmohd.com.zone
@@ -0,0 +1,46 @@
+$ORIGIN sinanmohd.com.
+$TTL 2d
+
+@	IN	SOA	ns1	hostmaster (
+			2024022700 ; serial
+			2h         ; refresh
+			5m         ; retry
+			1d         ; expire
+			5m )       ; nx ttl
+
+	IN	NS	ns1
+	IN	NS	ns2.he.net.
+	IN	NS	ns3.he.net.
+	IN	NS	ns4.he.net.
+	IN	NS	ns5.he.net.
+
+     30	IN	A	127.0.0.1
+     30	IN	AAAA	::1
+
+	IN	MX   10	mail
+
+	IN	TXT	"v=spf1 mx -all"
+_dmarc	IN	TXT	"v=DMARC1; p=reject; rua=mailto:reports@sinanmohd.com; ruf=mailto:reports@sinanmohd.com; adkim=s; aspf=s"
+
+ed25519._domainkey	IN	TXT	"v=DKIM1; k=ed25519; p=EHk924AruF9Y0Xaf009rpRl+yGusjmjT1Zeho67BnDU="
+rsa._domainkey		IN	TXT	"v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4HEqO63fSC0cUnJt9vAQBssTkPfT4QefmAK/1BtAIRIOdGakf7PI7p3A1ETgwfYxuHj7BUSzUtESsHMThbhB1Wko79+AR+5ZBDBmD8CE0dOnZfzeG8xIaGfYkaL4gana6YZWiBT2oi/CimJfc22wacF01SufOs4R8cDpy4BZIgDD/zfF4bFTORQ0vMSJQJkp1zdQelERDU5CEezgxgVYgoSmdEpgkhc23PJSyj4Z7hA69N0amsb3cVVrfVXcYvSqTK3S2vLLA89ws4CUjCCpUW40gVIP8QP6CqTL76936Oo7OVWgmV3Sn3wa8FMN6IATY+fbMlrdOMsPY5PauJyEoQIDAQAB"
+
+ns1	IN	AAAA	2001:470:ee65::1
+
+mail 30	IN	A	127.0.0.1
+mail	IN	AAAA	2001:470:ee65::1337
+smtp	IN	CNAME	@
+imap	IN	CNAME	@
+mta-sts	IN	CNAME	@
+
+_mta-sts     IN	TXT	"v=STSv1; id=2024022500"
+_smtp._tls   IN	TXT	"v=TLSRPTv1; rua=mailto:reports@sinanmohd.com"
+
+www	IN	CNAME	@
+git	IN	CNAME	@
+bin	IN	CNAME	@
+static	IN	CNAME	@
+
+lia	IN	A	65.0.3.127
+
+_acme-challenge	IN	NS	ns1
diff --git a/os/kay/modules/hurricane.nix b/os/kay/modules/hurricane.nix
new file mode 100644
index 0000000..9e22bf5
--- /dev/null
+++ b/os/kay/modules/hurricane.nix
@@ -0,0 +1,115 @@
+{ config, pkgs, lib, ... }:
+
+let
+  iface = "hurricane";
+  remote = "216.218.221.42";
+
+  clinet = "2001:470:35:72a::2";
+  server = "2001:470:35:72a::1";
+
+  prefix64 = "2001:470:36:72a::/64";
+  prefix48 = "2001:470:ee65::/48";
+
+  makeAddr = prefix: host: let
+    split = lib.strings.splitString "/" prefix;
+  in {
+    address = "${lib.head split}${host}";
+    prefixLength = lib.toInt (lib.last split);
+  };
+in
+{
+  networking = {
+    sits.${iface} = {
+      inherit remote;
+      ttl = 225;
+    };
+    interfaces.${iface} = {
+      mtu = 1440; # 1460(ppp0) - 20
+      ipv6.addresses = [
+        {
+          address = clinet;
+          prefixLength = 64;
+        }
+
+        (makeAddr prefix64 "1")
+        (makeAddr prefix48 "1")
+        (makeAddr prefix48 "1337")
+      ];
+    };
+
+    iproute2 = {
+      enable = true;
+      rttablesExtraConfig = "200 hurricane";
+    };
+
+    firewall.extraCommands =
+      "iptables -A INPUT --proto 41 --source ${remote} --jump ACCEPT";
+  };
+
+  sops.secrets = {
+    "hurricane/username" = {};
+    "hurricane/update_key" = {};
+    "hurricane/tunnel_id" = {};
+  };
+
+  systemd.services."network-route-${iface}" = {
+    description = "Routing configuration of ${iface}";
+    wantedBy = [
+      "network-setup.service"
+      "network.target"
+    ];
+    before = [ "network-setup.service" ];
+    bindsTo = [ "network-addresses-hurricane.service" ];
+    after = [ "network-pre.target" "network-addresses-hurricane.service" ];
+    # restart rather than stop+start this unit to prevent the
+    # network from dying during switch-to-configuration.
+    stopIfChanged = false;
+
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+
+    path = [ pkgs.iproute2 ];
+    script = ''
+      echo -n "adding route"
+
+      ip -6 rule add from ${clinet}/64 table hurricane || exit 1
+      ip -6 rule add from ${prefix64} table hurricane || exit 1
+      ip -6 rule add from ${prefix48} table hurricane || exit 1
+
+      ip -6 route add default via ${server} dev hurricane table hurricane || exit 1
+    '';
+    preStop = ''
+      echo -n "deleting route"
+
+      ip -6 route del default via ${server} dev hurricane table hurricane || exit 1
+
+      ip -6 rule del from ${prefix48} table hurricane || exit 1
+      ip -6 rule del from ${prefix64} table hurricane || exit 1
+      ip -6 rule del from ${clinet}/64 table hurricane || exit 1
+    '';
+  };
+
+
+  services.pppd.script."01-${iface}" = {
+    runtimeInputs = with pkgs; [ curl coreutils iproute2 iputils ];
+    text = ''
+      wan_ip="$4"
+      username="$(cat ${config.sops.secrets."hurricane/username".path})"
+      update_key="$(cat ${config.sops.secrets."hurricane/update_key".path})"
+      tunnel_id="$(cat ${config.sops.secrets."hurricane/tunnel_id".path})"
+
+      auth_url="https://$username:$update_key@ipv4.tunnelbroker.net/nic/update?hostname=$tunnel_id"
+      until curl --silent "$auth_url"; do
+          sleep 1
+      done
+
+      while [ ! -e /sys/class/net/${iface} ]; do
+          sleep 1 # make sure ${iface} is up
+      done
+
+      ip tunnel change ${iface} local "$wan_ip" mode sit
+    '';
+  };
+}
diff --git a/os/kay/modules/iperf3.nix b/os/kay/modules/iperf3.nix
new file mode 100644
index 0000000..901a93d
--- /dev/null
+++ b/os/kay/modules/iperf3.nix
@@ -0,0 +1,10 @@
+{ ... }:
+
+{
+  services.iperf3 = {
+    enable = true;
+
+    bind = "10.0.0.1";
+    openFirewall = true;
+  };
+}
diff --git a/os/kay/modules/mail.nix b/os/kay/modules/mail.nix
new file mode 100644
index 0000000..79e4019
--- /dev/null
+++ b/os/kay/modules/mail.nix
@@ -0,0 +1,110 @@
+{ config, ... }: let
+  ipv6 = "2001:470:ee65::1337";
+  domain = config.userdata.domain;
+
+  username = config.userdata.name;
+  secret = "$argon2i$v=19$m=4096,t=3,p=1$SWV5aWU3YWUgZWFTNm9oc28gTGFvdDdlRG8ga2FTaWVjaDYgYWV0aDFHb28$O/sDv7oy9wUxFjvKoxB5o8ZnPvjYJo9DjX0C/AZQFF0";
+  email = [
+    "${username}@${domain}"
+    "official@${domain}"
+
+    "postmaster@${domain}"
+    "hostmaster@${domain}"
+  ];
+
+  credentials_directory = "/run/credentials/stalwart-mail.service";
+in {
+  networking.firewall.allowedTCPPorts = [
+    25    # smto
+    465   # submission
+    587   # submissions
+    993   # imap ssl
+    4190  # managesieve
+  ];
+
+  security.acme.certs.${domain}.postRun = "systemctl restart stalwart-mail.service";
+  sops.secrets = {
+    "mail.${domain}/dkim_rsa" = {};
+    "mail.${domain}/dkim_ed25519" = {};
+  };
+
+  services.stalwart-mail = {
+    enable = true;
+    loadCredential = [
+      "dkim_rsa:${config.sops.secrets."mail.${domain}/dkim_rsa".path}"
+      "dkim_ed25519:${config.sops.secrets."mail.${domain}/dkim_ed25519".path}"
+
+      "cert:${config.security.acme.certs.${domain}.directory}/fullchain.pem"
+      "key:${config.security.acme.certs.${domain}.directory}/key.pem"
+    ];
+
+    settings = {
+      macros = {
+        host = "mail.${domain}";
+        default_domain = domain;
+        default_directory = "in-memory";
+        default_store = "sqlite";
+      };
+
+      queue.outbound = {
+        ip-strategy = "ipv6_then_ipv4";
+        source-ip.v6 = "['${ipv6}']";
+        tls.starttls = "optional";
+      };
+      server.listener = {
+        smtp.bind = [ "[${ipv6}]:25" "0.0.0.0:25" ];
+        jmap.bind = [ "[::]:8034" ];
+      };
+
+      signature = {
+        rsa = {
+          private-key = "file://${credentials_directory}/dkim_rsa";
+          selector = "rsa";
+          set-body-length = true;
+        };
+        ed25519 = {
+          public-key = "EHk924AruF9Y0Xaf009rpRl+yGusjmjT1Zeho67BnDU=";
+          private-key = "file://${credentials_directory}/dkim_ed25519";
+          domain = "%{DEFAULT_DOMAIN}%";
+          selector = "ed25519";
+          headers = [ "From" "To" "Date" "Subject" "Message-ID" ];
+          algorithm = "ed25519-sha256";
+          canonicalization = "relaxed/relaxed";
+          set-body-length = true;
+          report = true;
+        };
+      };
+
+      certificate."default" = {
+        cert = "file://${credentials_directory}/cert";
+        private-key = "file://${credentials_directory}/key";
+      };
+
+      storage.blob = "fs";
+      store = {
+        fs.disable = false;
+        sqlite.disable = false;
+      };
+
+      directory."in-memory" = {
+        type = "memory";
+        options.subaddressing = true;
+
+        principals = [
+          {
+            inherit email;
+            inherit secret;
+            name = username;
+            type = "admin";
+          }
+          { # for mta-sts & dmarc reports
+            email = "reports${domain}";
+            inherit secret;
+            name = "reports";
+            type = "individual";
+          }
+        ];
+      };
+    };
+  };
+}
diff --git a/os/kay/modules/matrix-sliding-sync.nix b/os/kay/modules/matrix-sliding-sync.nix
new file mode 100644
index 0000000..ebdc34d
--- /dev/null
+++ b/os/kay/modules/matrix-sliding-sync.nix
@@ -0,0 +1,18 @@
+{ config, ... }:
+
+let
+  domain = config.userdata.domain;
+in
+{
+  sops.secrets."matrix-${domain}/sliding_sync" = {};
+
+  services.matrix-sliding-sync = {
+    enable = true;
+    environmentFile = config.sops.secrets."matrix-${domain}/sliding_sync".path;
+
+    settings = {
+      SYNCV3_LOG_LEVEL = "warn";
+      SYNCV3_SERVER = "http://127.0.0.1:${toString config.services.dendrite.httpPort}";
+    };
+  };
+}
diff --git a/os/kay/modules/network.nix b/os/kay/modules/network.nix
new file mode 100644
index 0000000..929fb1b
--- /dev/null
+++ b/os/kay/modules/network.nix
@@ -0,0 +1,82 @@
+{ config, ... }:
+
+let
+  inetVlan = 722;
+  voipVlan = 1849;
+  wanInterface = "enp4s0";
+  nameServer = "1.0.0.1";
+in
+{
+  imports = [
+    ./router.nix
+    ./hurricane.nix
+  ];
+
+  sops.secrets = {
+    "ppp/chap-secrets" = {};
+    "ppp/pap-secrets" = {};
+    "ppp/username" = {};
+  };
+
+  networking = let
+    voipVlanIface = "voip";
+  in {
+    vlans = {
+      wan = {
+        id = inetVlan;
+        interface = wanInterface;
+      };
+      ${voipVlanIface} = {
+        id = voipVlan;
+        interface = wanInterface;
+      };
+    };
+
+    interfaces.${voipVlanIface}.useDHCP = true;
+    dhcpcd.extraConfig = ''
+      interface ${voipVlanIface}
+      ipv4only
+      nogateway
+    '';
+  };
+
+  services = {
+    dnsmasq = {
+      enable = true;
+      settings = {
+        server = [ nameServer ];
+        bind-interfaces = true;
+      };
+    };
+
+    pppd = {
+      enable = true;
+
+      config = ''
+        plugin pppoe.so
+        debug
+
+        nic-wan
+        defaultroute
+        ipv6 ::1,
+        noauth
+
+        persist
+        lcp-echo-adaptive
+        lcp-echo-interval 1
+        lcp-echo-failure 5
+      '';
+
+      peers.bsnl = {
+        enable = true;
+        autostart = true;
+        configFile = config.sops.secrets."ppp/username".path;
+      };
+
+      secret = {
+        chap = config.sops.secrets."ppp/chap-secrets".path;
+        pap = config.sops.secrets."ppp/pap-secrets".path;
+      };
+    };
+  };
+}
diff --git a/os/kay/modules/router.nix b/os/kay/modules/router.nix
new file mode 100644
index 0000000..2254c3b
--- /dev/null
+++ b/os/kay/modules/router.nix
@@ -0,0 +1,43 @@
+{ ... }:
+
+let
+  lanInterface = "enp0s20u1";
+  wanInterface = "ppp0";
+  subnet = "10.0.0.0";
+  prefix = 24;
+  host = "10.0.0.1";
+  leaseRangeStart = "10.0.0.100";
+  leaseRangeEnd = "10.0.0.254";
+in
+{
+  imports = [
+    ./wireguard.nix
+    ./iperf3.nix
+  ];
+
+  networking = {
+    nat = {
+      enable = true;
+      externalInterface = wanInterface;
+      internalInterfaces = [ lanInterface ];
+    };
+    interfaces."${lanInterface}" = {
+      ipv4.addresses = [{ 
+        address = host;
+        prefixLength  = prefix;
+      }];
+    };
+    firewall = {
+      allowedUDPPorts = [ 53 67 ];
+      allowedTCPPorts = [ 53 ];
+      extraCommands = ''
+        iptables -t nat -I POSTROUTING 1 -s ${subnet}/${toString prefix} -o ${wanInterface} -j MASQUERADE
+      '';
+    };
+  };
+
+  services.dnsmasq.settings = {
+    dhcp-range = [ "${leaseRangeStart},${leaseRangeEnd}" ];
+    interface = [ lanInterface ];
+  };
+}
diff --git a/os/kay/modules/sftp.nix b/os/kay/modules/sftp.nix
new file mode 100644
index 0000000..bbe055e
--- /dev/null
+++ b/os/kay/modules/sftp.nix
@@ -0,0 +1,44 @@
+{ config, ... }:
+
+let
+  storage = "/hdd/users";
+  user = config.userdata.name;
+  pubKeys = config.users.users.${user}.openssh.authorizedKeys.keys;
+in
+{
+  users = {
+    groups."sftp".members = [];
+
+    users."sftp" = {
+      group = "sftp";
+      shell = "/run/current-system/sw/bin/nologin";
+      isNormalUser = true;
+      openssh.authorizedKeys.keys = [
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFmA1dyV+o9gfoxlbVG0Y+dn3lVqdFs5fMqfxyNc5/Lr sftp@cez"
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDCbgjAfyDNtLNyOS+sfLirYtfEAkGqV54LOwabpWkvf sftp@veu"
+      ] ++ pubKeys;
+    };
+
+    users."nazer" = {
+      group = "sftp";
+      shell = "/run/current-system/sw/bin/nologin";
+      isNormalUser = true;
+      openssh.authorizedKeys.keys = [
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICV09w9Ovk9wk4Bhn/06iOn+Ss8lK3AmQAl8+lXHRycu nazu@pc"
+      ];
+    };
+  };
+
+  services.openssh.extraConfig  = ''
+    Match Group sftp
+    # chroot dir should be owned by root
+    # and sub dirs by %u
+    ChrootDirectory ${storage}/%u
+    ForceCommand internal-sftp
+
+    PermitTunnel no
+    AllowAgentForwarding no
+    AllowTcpForwarding no
+    X11Forwarding no
+  '';
+}
diff --git a/os/kay/modules/sshfwd.nix b/os/kay/modules/sshfwd.nix
new file mode 100644
index 0000000..d70b893
--- /dev/null
+++ b/os/kay/modules/sshfwd.nix
@@ -0,0 +1,29 @@
+{ ... }: let
+  group = "sshfwd";
+in {
+  networking.firewall.allowedTCPPorts = [ 2222 ];
+
+  users = {
+    groups.${group}.members = [];
+
+    users."lia" = {
+      inherit group;
+      isSystemUser = true;
+
+      openssh.authorizedKeys.keys
+        = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAe7fJlh9L+9JSq0+hK7jNZjszmZqNXwzqcZ+zx0yJyU lia" ];
+    };
+  };
+
+  services.openssh.extraConfig  = ''
+    Match Group ${group}
+    ForceCommand echo 'this account is only usable for remote forwarding'
+    PermitTunnel no
+    AllowAgentForwarding no
+    X11Forwarding no
+
+    AllowTcpForwarding remote
+    GatewayPorts clientspecified
+    PermitListen *:2222
+  '';
+}
diff --git a/os/kay/modules/wireguard.nix b/os/kay/modules/wireguard.nix
new file mode 100644
index 0000000..578a86a
--- /dev/null
+++ b/os/kay/modules/wireguard.nix
@@ -0,0 +1,57 @@
+{ config, ... }:
+
+let
+  wgInterface = "wg";
+  wanInterface = "ppp0";
+  subnet = "10.0.1.0";
+  prefix = 24;
+  port = 51820;
+in
+{
+  sops.secrets."misc/wireguard" = {};
+
+  networking = {
+    nat = {
+      enable = true;
+      externalInterface = wanInterface;
+      internalInterfaces = [ wgInterface ];
+    };
+    firewall = {
+      allowedUDPPorts = [ port ];
+      extraCommands = ''
+        iptables -t nat -I POSTROUTING 1 -s ${subnet}/${toString prefix} -o ${wanInterface} -j MASQUERADE
+      '';
+    };
+
+    wireguard.interfaces.${wgInterface} = {
+      ips = [ "10.0.1.1/${toString prefix}" ];
+      listenPort = port;
+      mtu = 1380; # 1460 (ppp0) - 80
+      privateKeyFile = config.sops.secrets."misc/wireguard".path;
+
+      peers = [
+        { # cez
+          publicKey = "IcMpAs/D0u8O/AcDBPC7pFUYSeFQXQpTqHpGOeVpjS8=";
+          allowedIPs = [ "10.0.1.2/32" ];
+        }
+        { # veu
+          publicKey = "bJ9aqGYD2Jh4MtWIL7q3XxVHFuUdwGJwO8p7H3nNPj8=";
+          allowedIPs = [ "10.0.1.3/32" ];
+        }
+        { # dad
+          publicKey = "q70IyOS2IpubIRWqo5sL3SeEjtUy2V/PT8yqVExiHTQ=";
+          allowedIPs = [ "10.0.1.4/32" ];
+        }
+        { # shambai
+          publicKey = "YYDlp/bNKkqFHAhdgaZ2SSEMnIjKTqPTK7Ju6O9/1gY=";
+          allowedIPs = [ "10.0.1.5/32" ];
+        }
+      ];
+    };
+  };
+
+  services.dnsmasq.settings = {
+    no-dhcp-interface = wgInterface;
+    interface = [ wgInterface  ];
+  };
+}
diff --git a/os/kay/modules/www.nix b/os/kay/modules/www.nix
new file mode 100644
index 0000000..3891bf6
--- /dev/null
+++ b/os/kay/modules/www.nix
@@ -0,0 +1,134 @@
+{ config, pkgs, lib, ... }:
+
+let
+  domain = config.userdata.domain;
+  fscusat = "fscusat.org";
+  mark = "themark.ing";
+  storage = "/hdd/users/sftp/shr";
+in
+{
+  imports = [
+    ./dendrite.nix
+    ./matrix-sliding-sync.nix
+    ./cgit.nix
+  ];
+
+  security.acme.certs.${domain}.postRun = "systemctl reload nginx.service";
+  networking.firewall = {
+    allowedTCPPorts = [ 80 443 ];
+    allowedUDPPorts = [ 443 ];
+  };
+
+  services.nginx = { 
+    enable = true;
+    package = pkgs.nginxQuic;
+    enableQuicBPF = true;
+
+    recommendedTlsSettings = true;
+    recommendedZstdSettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+    recommendedProxySettings = true;
+    recommendedBrotliSettings = true;
+    eventsConfig = "worker_connections 1024;";
+
+    virtualHosts = let
+      defaultOpts = {
+        quic = true;
+        http3 = true;
+        forceSSL = true;
+        useACMEHost = domain;
+      };
+    in {
+      "${domain}" = defaultOpts // {
+        default = true;
+        globalRedirect = "www.${domain}";
+
+        extraConfig = ''
+          client_max_body_size ${toString
+            config.services.dendrite.settings.media_api.max_file_size_bytes
+          };
+        '';
+
+        locations = {
+          "/.well-known/matrix/server".return = ''
+            200 '{ "m.server": "${domain}:443" }'
+          '';
+
+          "/.well-known/matrix/client".return = ''
+            200 '${builtins.toJSON {
+                "m.homeserver".base_url = "https://${domain}";
+                "org.matrix.msc3575.proxy".url = "https://${domain}";
+            }}'
+          '';
+
+          "/_matrix".proxyPass = "http://127.0.0.1:${toString
+            config.services.dendrite.httpPort
+          }";
+
+          "/_matrix/client/unstable/org.matrix.msc3575/sync".proxyPass =
+            "http://${config.services.matrix-sliding-sync.settings.SYNCV3_BINDADDR}";
+        };
+      };
+
+      "www.${domain}" = defaultOpts // {
+        root = "/var/www/${domain}";
+      };
+
+      "git.${domain}" = defaultOpts;
+
+      "bin.${domain}" = defaultOpts // {
+        root = "${storage}/bin";
+        locations."= /".return = "307 https://www.${domain}";
+      };
+
+      "static.${domain}" = defaultOpts // {
+        root = "${storage}/static";
+        locations."= /".return = "301 https://www.${domain}";
+      };
+
+      "${fscusat}" = defaultOpts // {
+        useACMEHost = null;
+        enableACME = true;
+
+        globalRedirect = "www.${fscusat}";
+      };
+      "www.${fscusat}" = defaultOpts // {
+        useACMEHost = null;
+        enableACME = true;
+
+        locations."/" = {
+          return = "200 '<h1>under construction</h1>'";
+          extraConfig = "add_header Content-Type text/html;";
+        };
+      };
+
+      "${mark}" = defaultOpts // {
+        useACMEHost = null;
+        enableACME = true;
+
+        globalRedirect = "www.${mark}";
+      };
+      "www.${mark}" = defaultOpts // {
+        useACMEHost = null;
+        enableACME = true;
+
+        locations."/" = {
+          return = "200 '<h1>under construction, see you soon</h1>'";
+          extraConfig = "add_header Content-Type text/html;";
+        };
+      };
+
+      "mta-sts.${domain}" = defaultOpts // {
+        locations."= /.well-known/mta-sts.txt".return = ''200 "${
+          lib.strings.concatStringsSep "\\n" [
+            "version: STSv1"
+            "mode: enforce"
+            "mx: mail.${domain}"
+            "max_age: 86400"
+          ]
+        }"'';
+      };
+    };
+  };
+}
diff --git a/os/kay/secrets.yaml b/os/kay/secrets.yaml
new file mode 100644
index 0000000..47be11b
--- /dev/null
+++ b/os/kay/secrets.yaml
@@ -0,0 +1,47 @@
+ppp:
+    chap-secrets: ENC[AES256_GCM,data:oTwucN94iWIzrCCAQySpkG+uEBERmEjXfoPm6piook8bS/q3kCd/DQ==,iv:IC1Ii+rnTvFa0F2bi0fnEAEO7XWV7Wues9T+28bhDnc=,tag:239vrwVzeTIVCIw8U30jtg==,type:str]
+    pap-secrets: ENC[AES256_GCM,data:S72mx8AP8MDWrYZ3TIOnwoKcVWiUzms1ZpckghHjjFcWhW5orOjPOA==,iv:4kNHSZ3+FMA9ROLEgrU38IWd+MBt+vf8CV3WGHkRCCc=,tag:rBtSZH8i7fE7fJhRRda7eA==,type:str]
+    username: ENC[AES256_GCM,data:GzRdyvnRKSS8iH+RuFU9g6zxXhxl0DeWWkAyF3sefZc0QQ==,iv:yTRruKpMda4N2J3Z8MEesrFxqV4g1usbYoxTeKlWf4M=,tag:8h9cpYn2Zy/32+2HJ76dFw==,type:str]
+hurricane:
+    username: ENC[AES256_GCM,data:pe3igN9AIbc1,iv:stBkppjkDC9nvV/fHaEtfs6KskoiqqEKxCp/KC+Xxeo=,tag:pH5CJXOOp/is7dQmt6wlog==,type:str]
+    update_key: ENC[AES256_GCM,data:wwd+QWTgKEqstY5d2eWBnWJYq2EisTTaa/Ow4WwBNkyh5FYP+7PEyg==,iv:b93JvsfWppqlJtZxGAa3xbXgLEFs0A5Seq5pNjTnRW4=,tag:+W1t1M+Mm4LopVbcI1x+eg==,type:str]
+    tunnel_id: ENC[AES256_GCM,data:WUDOxjmA,iv:W8k0pyrAQz+UWtm76uvmzodJ2lZG4ioxrVMWjX1kIVM=,tag:2Q25MXzlptg/rc0HQ1k6rg==,type:str]
+dns: ENC[AES256_GCM,data:Pa6Oo7UFDqo5ZN+eyz9MKy0p4KU1ePTpWQ+R8PuSFO9JjFt/I86ru/qSKyymIzhJcjj5hXMT2LPjk4MH8BWaO39ACsPDSD09xA6e1GO0rvsvtB9cffuz/GnfveyHmev+7xzdriD4IHqINPE=,iv:zuSfHnmxrjFCX3DJSRxLDs/3IVBRnkn3crar1pCW1EU=,tag:rZ0TlMMsOCF3Shunx8PnfA==,type:str]
+matrix-sinanmohd.com:
+    key: ENC[AES256_GCM,data:xsSYua3g+ySUVBtfVZ2uZR4761MC5LeJGxmcgf+dWb5+tBSmgzAQL9FFcl7GLzhTmvlq13lARUr599wShS/C9IyMVGOOT9A8hxLFF9Kak64hmM7ERGrwbmzBY1mdTtvibJqzHaeybUVIMbDagczF54zpjDGLmdC5V84wduPFCndSA5FW+4Hhqw==,iv:KJtqrGNPgMDR6Sg/fOUzVAiwnPZwve9wpVfDQPc4g/c=,tag:E2jlbt5WbRA9wu16Lr69Bg==,type:str]
+    sliding_sync: ENC[AES256_GCM,data:ubFeb/OgYYHaIHVky6KS3icORbpqf7PO3p8bONA8mwG8vU1LB0TDqVm6vQTa8G9pe96JzJ8+IAgSZafG9PaEJc/Bpj53aWRFO3HEV0Pj,iv:P8VD8utVEwNoeQEZUdS2R9GuDe20nKiXYCfKJl0Id3E=,tag:VksV/4IaKN0C2g/alw6r4Q==,type:str]
+mail.sinanmohd.com:
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+sops:
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+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1q5sfy74d53n6jxlgsc2zrsz4wcl9d830nxuagc3wfmdkrrp55ckq9ev6nv
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            0Me0paRmqzsYBizp12SHjaXYiXFpvEeGmOVOMoGvD8UzTa+V5klS0w==
+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age15989j5lkkf2kn5wa2p6qc8wlxjjksc63k5ync8rz8t4e87394pzqm7h4rm
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
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+            YU95N3lRWFhUUzczV1h4eUU0dHdSbWdpWVhZCmREdmFDSzRzY3pZUHpERkhCK1FS
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+            bTkpKKyOAIIin3YM975wwvkCuWNG4tbnHBHQFh5JGK2OEyLDXuV7Pg==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2024-02-25T04:23:28Z"
+    mac: ENC[AES256_GCM,data:SUFBHKTM2tQHX1Xtta3spl/GaaNrIAcNrLFzKzqb2ki3FhXnLLYu0wD+IBxuj1nxICn9TDprHFdcDenfFPV1mYWtmXLmWMeDcIGKXedYex2nakdlIYngGiLkEseuehft46YtoEqLJVksBFoLKmywRi+/ZGux/heSIyD14Toxb3Q=,iv:dqYGObF1SV3VBxSZtrggRdD1ROqvlp7tn8xLdNuDxx4=,tag:N/4L6NgIqYKQ8IbpFGru2g==,type:str]
+    pgp: []
+    unencrypted_suffix: _unencrypted
+    version: 3.8.1