WIP: temmie/userweb: use bro to proxy sendmail requests out of sandbox

flake.lock

@@ -1,5 +1,27 @@
 {
   "nodes": {
+    "bro": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1779629827,
+        "narHash": "sha256-nrlB50/oelB8oFx9DhOoXI5z0VoTZGEA6XxYvkvpqDA=",
+        "ref": "main",
+        "rev": "7d0f35e12e4dec39f981c08fc33515589f41f4a5",
+        "revCount": 3,
+        "type": "git",
+        "url": "https://git.pvv.ntnu.no/Projects/bro.git"
+      },
+      "original": {
+        "ref": "main",
+        "type": "git",
+        "url": "https://git.pvv.ntnu.no/Projects/bro.git"
+      }
+    },
     "crane": {
       "locked": {
         "lastModified": 1776635034,
@@ -101,7 +123,7 @@
         "nixpkgs": [
           "nixpkgs-unstable"
         ],
-        "rust-overlay": "rust-overlay"
+        "rust-overlay": "rust-overlay_2"
       },
       "locked": {
         "lastModified": 1777019032,
@@ -165,7 +187,7 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "rust-overlay": "rust-overlay_2"
+        "rust-overlay": "rust-overlay_3"
       },
       "locked": {
         "lastModified": 1767906976,
@@ -352,6 +374,7 @@
     },
     "root": {
       "inputs": {
+        "bro": "bro",
         "dibbler": "dibbler",
         "disko": "disko",
         "gergle": "gergle",
@@ -377,7 +400,7 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "rust-overlay": "rust-overlay_3"
+        "rust-overlay": "rust-overlay_4"
       },
       "locked": {
         "lastModified": 1778600367,
@@ -396,6 +419,27 @@
       }
     },
     "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "bro",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1779419951,
+        "narHash": "sha256-dMX0PUslUHPajP6o8FEoRdFv9afq/dec4POR0vVfjK4=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "5b5c521d6cae9ef4aa32f888eb2c0ce595c9be52",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "rust-overlay_2": {
       "inputs": {
         "nixpkgs": [
           "greg-ng",
@@ -416,7 +460,7 @@
         "type": "github"
       }
     },
-    "rust-overlay_2": {
+    "rust-overlay_3": {
       "inputs": {
         "nixpkgs": [
           "minecraft-heatmap",
@@ -437,7 +481,7 @@
         "type": "github"
       }
     },
-    "rust-overlay_3": {
+    "rust-overlay_4": {
       "inputs": {
         "nixpkgs": [
           "roowho2",

flake.nix

@@ -47,6 +47,9 @@
 
     qotd.url = "git+https://git.pvv.ntnu.no/Projects/qotd.git?ref=main";
     qotd.inputs.nixpkgs.follows = "nixpkgs";
+
+    bro.url = "git+https://git.pvv.ntnu.no/Projects/bro.git?ref=main";
+    bro.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs = {
@@ -214,7 +217,14 @@
         };
         shark = stableNixosConfig "shark" {};
         wenche = stableNixosConfig "wenche" {};
-        temmie = stableNixosConfig "temmie" {};
+        temmie = stableNixosConfig "temmie" {
+          overlays = [
+            inputs.bro.overlays.default
+          ];
+          modules = [
+            inputs.bro.nixosModules.default
+          ];
+        };
         gluttony = stableNixosConfig "gluttony" {
           overlays = [
             (final: prev: { bluemap = final.callPackage ./packages/bluemap.nix {}; })

hosts/bicep/configuration.nix

@@ -7,7 +7,6 @@
     ./services/nginx
 
     ./services/calendar-bot.nix
-    ./services/garage.nix
     #./services/git-mirrors
     ./services/minecraft-heatmap.nix
     ./services/mysql

hosts/bicep/services/garage.nix

@@ -1,143 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.services.garage;
-in
-{
-  sops.secrets = lib.mkIf cfg.enable {
-    "garage/rpc-secret" = {
-      owner = "garage";
-      group = "garage";
-      restartUnits = [ "garage.service" ];
-    };
-    "garage/admin-token" = {
-      owner = "garage";
-      group = "garage";
-      restartUnits = [ "garage.service" ];
-    };
-    "garage/metrics-token" = {
-      owner = "garage";
-      group = "garage";
-      restartUnits = [ "garage.service" ];
-    };
-  };
-
-  services.garage = {
-    enable = true;
-    package = pkgs.garage_2;
-    settings = {
-      data_dir = [
-        {
-          capacity = "50G";
-          path = "/var/lib/garage/data";
-        }
-      ];
-      metadata_dir = "/var/lib/garage/meta";
-      db_engine = "lmdb";
-      replication_factor = 1;
-
-      rpc_bind_addr = "[::]:3901";
-      rpc_secret_file = config.sops.secrets."garage/rpc-secret".path;
-
-      s3_api = {
-        s3_region = "eu-central";
-        api_bind_addr = "[::]:3900";
-        root_domain = ".garage.pvv.ntnu.no";
-      };
-
-      # s3_web = {
-      #   bind_addr = "[::]:3902";
-      #   root_domain = ".garage-web.pvv.ntnu.no";
-      #   index = "index.html";
-      # };
-
-      admin = {
-      #   api_bind_addr = "[::]:3903";
-        admin_token_file = config.sops.secrets."garage/admin-token".path;
-        metrics_token_file = config.sops.secrets."garage/metrics-token".path;
-      };
-    };
-  };
-
-  users = lib.mkIf cfg.enable {
-    users.garage = {
-      isSystemUser = true;
-      group = "garage";
-    };
-    groups.garage = { };
-  };
-
-  systemd.tmpfiles.settings."10-garage" = lib.mkIf cfg.enable {
-    "/data/garage/data".d = {
-      user = "garage";
-      group = "garage";
-      mode = "0770";
-    };
-    "/data/garage/meta".d = {
-      user = "garage";
-      group = "garage";
-      mode = "0770";
-    };
-  };
-
-  systemd.services.garage = lib.mkIf cfg.enable {
-    serviceConfig = {
-      DynamicUser = false;
-      User = "garage";
-      Group = "garage";
-
-      BindReadWritePaths = [
-        "/data/garage/data:/var/lib/garage/data"
-        "/data/garage/meta:/var/lib/garage/meta"
-      ];
-
-      LoadCredential = [
-        "rpc_secret_path:${config.sops.secrets."garage/rpc-secret".path}"
-        "admin_token_path:${config.sops.secrets."garage/admin-token".path}"
-        "metrics_token_path:${config.sops.secrets."garage/metrics-token".path}"
-      ];
-
-      Environment = [
-        "GARAGE_ALLOW_WORLD_READABLE_SECRETS=true"
-        "GARAGE_RPC_SECRET_FILE=%d/rpc_secret_path"
-        "GARAGE_ADMIN_TOKEN_FILE=%d/admin_token_path"
-        "GARAGE_METRICS_TOKEN_FILE=%d/metrics_token_path"
-      ];
-    };
-  };
-
-  services.nginx = lib.mkIf cfg.enable {
-    upstreams.s3_backend.servers = {
-      "[::1]:3900" = { };
-    };
-    # upstreams.web_backend.servers = {
-    #   "[::1]:3902" = { };
-    # };
-
-    virtualHosts."garage.pvv.ntnu.no" = {
-      serverAliases = [ "*.garage.pvv.ntnu.no" ];
-
-      enableACME = true;
-      # useACMEHost = "garage.pvv.ntnu.no";
-      forceSSL = true;
-
-      locations."/" = {
-        proxyPass = "http://s3_backend";
-        extraConfig = ''
-          client_max_body_size 64m;
-          proxy_max_temp_file_size 0;
-        '';
-      };
-    };
-
-    # virtualHosts."garage-web.pvv.ntnu.no" = {
-    #   serverAliases = [ "*.garage-web.pvv.ntnu.no" ];
-
-    #   useACMEHost = "garage-web.pvv.ntnu.no";
-    #   forceSSL = true;
-
-    #   locations."/" = {
-    #     proxyPass = "http://web_backend";
-    #   };
-    # };
-  };
-}

hosts/temmie/services/userweb/mail.nix

@@ -1,4 +1,4 @@
-{ config, lib, ... }:
+{ config, lib, pkgs, ... }:
 {
   services.postfix.enable = lib.mkForce false;
 
@@ -9,4 +9,74 @@
       remotes = "mail.pvv.ntnu.no smtp --port=25";
     };
   };
+
+  services.bro = {
+    enable = true;
+
+    instances.userweb-sendmail = {
+      enable = true;
+
+      client = {
+        settings.BRO_FILE_FLAGS = [
+          "-C"
+        ];
+      };
+
+      server = {
+        settings = {
+          executable = lib.getExe pkgs.system-sendmail;
+          # allowed-env = [  ];
+        };
+      };
+    };
+  };
+
+  environment.systemPackages = [
+    (config.services.bro.instances.userweb-sendmail.client.package.overrideAttrs (prev: {
+      postInstall = (prev.postInstall or "") + ''
+        mv "$out/bin/sendmail" "$out/bin/bro-sendmail"
+      '';
+    }))
+  ];
+
+  systemd.services.bro-userweb-sendmail = {
+    serviceConfig = {
+      User = "nobody";
+      Group = "nobody";
+
+      AmbientCapabilities = "";
+      CapabilityBoundingSet = "";
+      NoNewPrivileges = false;
+      ProtectSystem = "strict";
+      ProtectHome = true;
+      PrivateTmp = true;
+      PrivateDevices = true;
+      PrivateUsers = false;
+      ProtectHostname = true;
+      ProtectClock = true;
+      ProtectKernelTunables = true;
+      ProtectKernelModules = true;
+      ProtectKernelLogs = true;
+      ProtectControlGroups = true;
+      RestrictAddressFamilies = [
+        "AF_UNIX"
+        "AF_INET"
+        "AF_INET6"
+        "AF_NETLINK"
+      ];
+      LockPersonality = true;
+      MemoryDenyWriteExecute = true;
+      PrivateMounts = true;
+      ProcSubset = "pid";
+      ProtectProc = "invisible";
+      RemoveIPC = true;
+      RestrictNamespaces = true;
+      RestrictRealtime = true;
+      RestrictSUIDSGID = true;
+      UMask = "0027";
+      SystemCallArchitectures = "native";
+      # SystemCallFilter = [
+      # ];
+    };
+  };
 }

secrets/bicep/bicep.yaml

@@ -10,10 +10,6 @@ minecraft-heatmap:
     ssh-key:
         private: ENC[AES256_GCM,data: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,iv:nt/+qPBwPZKQt43VJ9FbKjLYioFwCxD7VK9WNCJCmpQ=,tag:MuDfnTiro3VVJq9x5rkEQg==,type:str]
         public: ENC[AES256_GCM,data:+fiCO8VRSmV7tmyweYSpZJMOuMORLHkWetYbr20aTQ1vRYr927nYGes4E464t+Dv9OyJPCLmHBdgt7UvxJWuC3pZE8iStnBYnej3D4ebMzi2SMfOkJjGuQSplXtl8QeAYe1YvROmtQ==,iv:thgGQUyWdXfwUt1E/vudoNjl8JjnksFd1rb/asTry+g=,tag:t1iQPocvfI+JafuJycaLuw==,type:str]
-garage:
-    rpc-secret: ENC[AES256_GCM,data:GzLWSrVcjCiZKNC78BCjf1CFDdUxU43w5cjUCxlV2zUv4RLJ9m4rJiw749du+JW/w7CvyVgBHSM7D4ixeunvJA==,iv:VwrmBtbNX0AumaBmMNYwMd+zMHfYwXzvMd5D2uQrIis=,tag:ShHXGuYx4lrg+ORf+JXISw==,type:str]
-    admin-token: ENC[AES256_GCM,data:UFyn0s0t44oEDdV36kkeUyomvP0X+Sw4ed1g6n29Fh6PLYl53gvDnyg0OSI=,iv:w9IMARTfTcfvu/Qdh60JVH7S9W1GkV+/e3YL08WZKh8=,tag:kOx9BZ8OPBNRpvkLgmW3Zw==,type:str]
-    metrics-token: ENC[AES256_GCM,data:/dCSR1OgpEsOsRRzCeiY6OSyGvl8feKovb/Kfqg6QCQ4tb8bAkkR8xLtTxQ=,iv:4wHwBgoiJFTZETtNs9t6dshgG3f84T7HHiEi86LkOmU=,tag:3usDN18uB2ZPo8fDJZEDag==,type:str]
 sops:
     age:
         - recipient: age19nk55kcs7s0358jpkn75xnr57dfq6fq3p43nartvsprx0su22v7qcgcjdx
@@ -79,8 +75,8 @@ sops:
             U3IrZTB3YUJiREZDQkgzUFMvb3VxU1kKJhYYVcCT8hNJkEK1nD3GBekVGDOI3Nin
             iBat3LwB4Ijzx1jA+jKJ1Ilf4MgdoL2ox6l/uWft27vvsRaQ501VvA==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2026-04-29T12:18:46Z"
+    lastmodified: "2025-08-25T12:27:53Z"
-    mac: ENC[AES256_GCM,data:blfYRh75xbA+jeGCCxuZADBVAa4Nih+b5hcXEp8mdzOBrbdOWfL4TfuyYB0Cj/rMDsklIprczmBJ/a/cSTdKSaak/LfAzy7swR6u5R5V3+xLP6CopOhO59RaXc2inoMPEc73XAmP33jynm/kSznRM1PGA+X9oaK6PrWcTgHiM7M=,iv:SwXRz/XpyOVOQzvRjViqK41NOdHXGdTshQ3a/Qi1350=,tag:v6p6QW6qnv1T14PBBB88NQ==,type:str]
+    mac: ENC[AES256_GCM,data:GoJ2en7e+D4wjyPJqq7i1s8JPdgFO3wcxrtXOgSKTxi6HTibuIcP4KQcKrCMRAZmXOEL1vpnWFA2uk7S00Av7/QOnzP0Zrk3aPBM6lbB+p9XSabN0sOe1UpZDtAM3bzvS9JZzyztT5nHKvO/eV2rP71y/tYbsT6yvj7Y9zxpvKg=,iv:tQiCr7zpo7g5jZpt2VD9jtFKo32XUWs94Jay+T4XWys=,tag:npBqmlbUUfN+ztttajva3w==,type:str]
     pgp:
         - created_at: "2026-01-16T06:34:45Z"
           enc: |-
@@ -103,4 +99,4 @@ sops:
             -----END PGP MESSAGE-----
           fp: F7D37890228A907440E1FD4846B9228E814A2AAC
     unencrypted_suffix: _unencrypted
-    version: 3.12.2
+    version: 3.10.2