From b6fb7604846dfc5af2d5b999388e65c5bf43b3a0 Mon Sep 17 00:00:00 2001
From: Thomas Strobel <ts468@cam.ac.uk>
Date: Tue, 8 Sep 2015 19:24:40 +0200
Subject: [PATCH] namecoind nixos module: init

---
 nixos/modules/misc/ids.nix                    |   2 +
 nixos/modules/module-list.nix                 |   1 +
 .../modules/services/networking/namecoind.nix | 128 ++++++++++++++++++
 3 files changed, 131 insertions(+)
 create mode 100644 nixos/modules/services/networking/namecoind.nix

diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index 1e5393f26b54..8ee92f695b46 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -229,6 +229,7 @@
       riak = 205;
       shout = 206;
       gateone = 207;
+      namecoin = 208;
 
       # When adding a uid, make sure it doesn't match an existing gid. And don't use uids above 399!
 
@@ -436,6 +437,7 @@
       riak = 205;
       #shout = 206; #unused
       gateone = 207;
+      #namecoin = 208; #unused
 
       # When adding a gid, make sure it doesn't match an existing
       # uid. Users and groups with the same name should have equal
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 8ee54ce7ef4b..17243882e77d 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -303,6 +303,7 @@
   ./services/networking/minidlna.nix
   ./services/networking/mstpd.nix
   ./services/networking/murmur.nix
+  ./services/networking/namecoind.nix
   ./services/networking/nat.nix
   ./services/networking/networkmanager.nix
   ./services/networking/ngircd.nix
diff --git a/nixos/modules/services/networking/namecoind.nix b/nixos/modules/services/networking/namecoind.nix
new file mode 100644
index 000000000000..7c7c700ab943
--- /dev/null
+++ b/nixos/modules/services/networking/namecoind.nix
@@ -0,0 +1,128 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.namecoind;
+
+  namecoinConf =
+  let
+    useSSL = (cfg.rpcCertificate != null) && (cfg.rpcKey != null);
+  in
+  pkgs.writeText "namecoin.conf" ''
+    server=1
+    daemon=0
+    rpcallowip=127.0.0.1
+    walletpath=${cfg.wallet}
+    gen=${if cfg.generate then "1" else "0"}
+    rpcssl=${if useSSL then "1" else "0"}
+    ${optionalString useSSL "rpcsslcertificatechainfile=${cfg.rpcCertificate}"}
+    ${optionalString useSSL "rpcsslprivatekeyfile=${cfg.rpcKey}"}
+    ${optionalString useSSL "rpcsslciphers=TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH"}
+    txindex=1
+    txprevcache=1
+  '';
+
+in
+
+{
+
+  ###### interface
+
+  options = {
+
+    services.namecoind = {
+
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to run namecoind.
+        '';
+      };
+
+      wallet = mkOption {
+        type = types.path;
+        example = "/etc/namecoin/wallet.dat";
+        description = ''
+          Wallet file.
+        '';
+      };
+
+      userFile = mkOption {
+        type = types.nullOr types.path;
+        default = null;
+        example = "/etc/namecoin/user";
+        description = ''
+          File containing the user name and user password to
+          authenticate RPC connections to namecoind.
+          The content of the file is of the form:
+          <literal>
+          USER=namecoin
+          PASSWORD=secret
+          </literal>
+        '';
+      };
+
+      generate = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to generate (mine) Namecoins.
+        '';
+      };
+
+      rpcCertificate = mkOption {
+        type = types.nullOr types.path;
+        default = null;
+        example = "/etc/namecoin/server.cert";
+        description = ''
+          Certificate file for securing RPC connections.
+        '';
+      };
+
+      rpcKey = mkOption {
+        type = types.nullOr types.path;
+        default = null;
+        example = "/etc/namecoin/server.pem";
+        description = ''
+          Key file for securing RPC connections.
+        '';
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+
+    users.extraUsers = singleton
+      { name = "namecoin";
+        uid = config.ids.uids.namecoin;
+        description = "Namecoin daemon user";
+        home = "/var/lib/namecoin";
+        createHome = true;
+      };
+
+    systemd.services.namecoind = {
+        description = "Namecoind Daemon";
+        after = [ "network.target" ];
+        wantedBy = [ "multi-user.target" ];
+        serviceConfig = {
+          Type = "simple";
+          User = "namecoin";
+          EnvironmentFile = cfg.userFile;
+          ExecStart = "${pkgs.altcoins.namecoind}/bin/namecoind -conf=${namecoinConf} -rpcuser=$USER -rpcpassword=$PASSWORD -printtoconsole";
+          ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+          ExecStop = "${pkgs.coreutils}/bin/kill -KILL $MAINPID";
+          StandardOutput = "null";
+          Nice = "10";
+        };
+    };
+
+  };
+
+}