From 5fb1b805a823bc90d22bd7f888d46ec3c9c78510 Mon Sep 17 00:00:00 2001
From: Felix Albrigtsen <felixalbrigtsen@gmail.com>
Date: Sat, 25 May 2024 23:44:29 +0200
Subject: [PATCH] bekkalokk: add snappymail

---
 hosts/bekkalokk/services/webmail/default.nix  |   5 +-
 .../bekkalokk/services/webmail/snappymail.nix |  18 +++
 modules/snappymail.nix                        | 103 ++++++++++++++++++
 3 files changed, 125 insertions(+), 1 deletion(-)
 create mode 100644 hosts/bekkalokk/services/webmail/snappymail.nix
 create mode 100644 modules/snappymail.nix

diff --git a/hosts/bekkalokk/services/webmail/default.nix b/hosts/bekkalokk/services/webmail/default.nix
index b37d061f..97bc5027 100644
--- a/hosts/bekkalokk/services/webmail/default.nix
+++ b/hosts/bekkalokk/services/webmail/default.nix
@@ -2,6 +2,7 @@
 {
   imports = [
     ./roundcube.nix
+    ./snappymail.nix
   ];
 
   services.nginx.virtualHosts."webmail.pvv.ntnu.no" = {
@@ -10,9 +11,11 @@
     kTLS = true;
     locations = {
       "= /".return = "302 https://webmail.pvv.ntnu.no/roundcube";
+
       "/afterlogic_lite".return = "302 https://webmail.pvv.ntnu.no/roundcube";
       "/squirrelmail".return = "302 https://webmail.pvv.ntnu.no/roundcube";
-      "/rainloop".return = "302 https://webmail.pvv.ntnu.no/roundcube";
+      "/rainloop".return = "302 https://snappymail.pvv.ntnu.no/";
+      "/snappymail".return = "302 https://snappymail.pvv.ntnu.no/";
     };
   };
 }
diff --git a/hosts/bekkalokk/services/webmail/snappymail.nix b/hosts/bekkalokk/services/webmail/snappymail.nix
new file mode 100644
index 00000000..3d51f9ed
--- /dev/null
+++ b/hosts/bekkalokk/services/webmail/snappymail.nix
@@ -0,0 +1,18 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.services.snappymail;
+in {
+  imports = [ ../../../../modules/snappymail.nix ];
+
+  services.snappymail = {
+    enable = true;
+    hostname = "snappymail.pvv.ntnu.no";
+  };
+
+  services.nginx.virtualHosts.${cfg.hostname} = {
+    forceSSL = true;
+    enableACME = true;
+    kTLS = true;
+  };
+}
+
diff --git a/modules/snappymail.nix b/modules/snappymail.nix
new file mode 100644
index 00000000..33a8107b
--- /dev/null
+++ b/modules/snappymail.nix
@@ -0,0 +1,103 @@
+{ config, pkgs, lib, ... }:
+
+let
+  inherit (lib) mkDefault mkEnableOption mkForce mkIf mkOption mkPackageOption generators types;
+
+  cfg = config.services.snappymail;
+  maxUploadSize = "256M";
+in {
+  options.services.snappymail = {
+    enable = mkEnableOption "Snappymail";
+
+    package = mkPackageOption pkgs "snappymail" { };
+
+    dataDir = mkOption {
+      type = types.str;
+      default = "/var/lib/snappymail";
+      description = "State directory for snappymail";
+    };
+
+    hostname = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      example = "mail.example.com";
+      description = "Enable nginx with this hostname, null disables nginx";
+    };
+
+    user = mkOption {
+      type = types.str;
+      default = "snappymail";
+      description = "System user under which snappymail runs";
+    };
+
+    group = mkOption {
+      type = types.str;
+      default = "snappymail";
+      description = "System group under which snappymail runs";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.users = mkIf (cfg.user == "snappymail") {
+      snappymail = {
+        description = "Snappymail service";
+        group = cfg.group;
+        home = cfg.dataDir;
+        isSystemUser = true;
+      };
+    };
+
+    users.groups = mkIf (cfg.group == "snappymail") {
+      snappymail = {};
+    };
+
+    services.phpfpm.pools.snappymail = {
+      user = cfg.user;
+      group = cfg.group;
+      phpOptions = generators.toKeyValue {} {
+        upload_max_filesize = maxUploadSize;
+        post_max_size = maxUploadSize;
+        memory_limit = maxUploadSize;
+      };
+
+      settings = {
+        "listen.owner" = config.services.nginx.user;
+        "listen.group" = config.services.nginx.group;
+        "pm" = "ondemand";
+        "pm.max_children" = 32;
+        "pm.process_idle_timeout" = "10s";
+        "pm.max_requests" = 500;
+      };
+    };
+
+    services.nginx = mkIf (cfg.hostname != null) {
+      virtualHosts."${cfg.hostname}" = {
+        locations."/".extraConfig = ''
+          index index.php;
+          autoindex on;
+          autoindex_exact_size off;
+          autoindex_localtime on;
+        '';
+        locations."^~ /data".extraConfig = ''
+          deny all;
+        '';
+        locations."~ \\.php$".extraConfig = ''
+          include ${config.services.nginx.package}/conf/fastcgi_params;
+
+          fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
+          fastcgi_pass unix:${config.services.phpfpm.pools.snappymail.socket};
+        '';
+        extraConfig = ''
+          client_max_body_size ${maxUploadSize};
+        '';
+
+        root = if (cfg.package == pkgs.snappymail) then
+          pkgs.snappymail.override {
+            dataPath = cfg.dataDir;
+          }
+        else cfg.package;
+      };
+    };
+  };
+}
+