4 files changed, 44 insertions, 0 deletions

diff --git a/nix/default.nix b/nix/default.nix
index dc225a3..b872f6a 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -6,4 +6,5 @@ self: super:
   pulseaudio-ctl = self.callPackage ./pulseaudio-ctl.nix {};
   monitor-uucp = self.callPackage ./monitor-uucp.nix {};
   rolling-directory = self.callPackage ./rolling-directory.nix {};
+  recv = self.callPackage ./recv.nix {};
 }
diff --git a/nix/module.nix b/nix/module.nix
index edc9bfb..40082b1 100644
--- a/nix/module.nix
+++ b/nix/module.nix
@@ -45,11 +45,17 @@ in {
       type = with types; listOf (submodule dirConfig);
       default = [];
     };
+
+    programs.recv.enable = mkEnableOption "the ‘recv’ program";
   };
 
   config = {
     nixpkgs.overlays = [ (import ./default.nix) ];
 
     systemd.services = listToAttrs (map dirService config.services.rollingDirectories);
+
+    security.wrappers = mkIf config.programs.recv.enable {
+      recv.source = "${pkgs.recv}/bin/recv";
+    };
   };
 }
diff --git a/nix/recv.nix b/nix/recv.nix
new file mode 100644
index 0000000..6bdc559
--- /dev/null
+++ b/nix/recv.nix
@@ -0,0 +1,24 @@
+{ stdenv
+, zsh, gnutar
+}:
+
+stdenv.mkDerivation rec {
+  name = "recv-${version}";
+  version = "0.1";
+  src = ../recv;
+
+  phases = [ "buildPhase" "installPhase" ];
+
+  inherit zsh gnutar;
+
+  buildPhase = ''
+    substituteAll $src recv
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+
+    install -m 755 -t $out/bin \
+      recv
+  '';
+}
diff --git a/recv b/recv
new file mode 100644
index 0000000..8d28884
--- /dev/null
+++ b/recv
@@ -0,0 +1,13 @@
+#!@zsh@/bin/zsh
+
+user="$0"
+[[ -n "$user" ]] || exit 2
+
+homeDir=$(getent passwd "$user" | cut -f6 -d:)
+recvDir="${homeDir}/uucppublic"
+
+[[ -d "$recvDir" ]] || exit 1
+
+umask 007
+
+exec @gnutar@/bin/tar -xv -C $(mktemp -d -p "$recvDir" recv.XXXXXXXXXX) --owner "$user" --no-same-permissions
\ No newline at end of file