commit ee9996bc2ef674abeb217d2ef6f7b1177a07d33f
Author: h7x4 <h7x4@nani.wtf>
Date:   Fri Jan 2 17:48:26 2026 +0900

    Initial commit

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b3d8ad0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+/target
+result
+result-*
+
+Cargo.lock
+
+
+# Added by cargo
+#
+# already existing elements were commented out
+
+#/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..16f1ff5
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,202 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "anstream"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
+[[package]]
+name = "clap"
+version = "4.5.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.5.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d76b5d13eaa18c901fd2f7fca939fefe3a0727a953561fefdf3b2922b8569d00"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.5.49"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a0b5487afeab2deb2ff4e03a807ad1a03ac532ff5a2cee5d86884440c7f7671"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
+
+[[package]]
+name = "colorchoice"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b05b61dc5112cbb17e4b6cd61790d9845d13888356391624cbe7e41efeac1e75"
+
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
+
+[[package]]
+name = "libc"
+version = "0.2.178"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37c93d8daa9d8a012fd8ab92f088405fb202ea0b6ab73ee2482ae66af4f42091"
+
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9695f8df41bb4f3d222c95a67532365f569318332d03d5f3f67f37b20e6ebdf0"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "roowho2"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "sd-notify",
+]
+
+[[package]]
+name = "sd-notify"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b943eadf71d8b69e661330cb0e2656e31040acf21ee7708e2c238a0ec6af2bf4"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
+[[package]]
+name = "syn"
+version = "2.0.112"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21f182278bf2d2bcb3c88b1b08a37df029d71ce3d3ae26168e3c653b213b99d4"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
+[[package]]
+name = "windows-sys"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..ba2452d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,68 @@
+[package]
+name = "roowho2"
+version = "0.1.0"
+edition = "2024"
+resolver = "2"
+license = "BSD3"
+authors = [
+  "projects@pvv.ntnu.no",
+]
+description = "A modern reimplementation of netkit tools"
+categories = ["command-line-interface", "command-line-utilities"]
+readme = "README.md"
+autobins = false
+autolib = false
+
+[dependencies]
+clap = { version = "4.5.53", features = ["derive"] }
+sd-notify = "0.4.5"
+
+[lib]
+name = "roowho2_lib"
+path = "src/lib.rs"
+
+[[bin]]
+name = "roowhod"
+bench = false
+path = "src/bin/roowhod.rs"
+
+[[bin]]
+name = "finger"
+bench = false
+path = "src/bin/finger.rs"
+
+[[bin]]
+name = "rup"
+bench = false
+path = "src/bin/rup.rs"
+
+[[bin]]
+name = "ruptime"
+bench = false
+path = "src/bin/ruptime.rs"
+
+[[bin]]
+name = "rusers"
+bench = false
+path = "src/bin/rusers.rs"
+
+[[bin]]
+name = "rwall"
+bench = false
+path = "src/bin/rwall.rs"
+
+[[bin]]
+name = "rwho"
+bench = false
+path = "src/bin/rwho.rs"
+
+[[bin]]
+name = "write"
+bench = false
+path = "src/bin/write.rs"
+
+[profile.releaselto]
+inherits = "release"
+strip = true
+lto = true
+codegen-units = 1
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8dcf072
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# roowhoo2
+
+Reimplementation of a subset of linux' netkit tools.
+
+## Programs reimplemented
+
+- [ ] finger
+- [ ] rup
+- [ ] ruptime
+- [ ] rusers
+- [ ] rwall
+- [ ] rwho
+- [ ] write
+
+## Programs *not* reimplemented
+
+- `rsh`/`rexec`/`rcp`/`rlogin`: use `ssh` + `scp`/`rsync`
+- `talk`: use a local irc server
+- `ping`/`telnet`/`ftp`/`tftp`: all of these you can get from other packages
+- `inetd`: either use a different distribution or use systemd socket activation
+- `timed`: use an ntp client
+- `biff`/`comsat`: nah
+- `ripquery`/`routed`: nuh-uh
+- `rpc*`: no need
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..66d0896
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,48 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1767116409,
+        "narHash": "sha256-5vKw92l1GyTnjoLzEagJy5V5mDFck72LiQWZSOnSicw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "cad22e7d996aea55ecab064e84834289143e44a0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1767322002,
+        "narHash": "sha256-yHKXXw2OWfIFsyTjduB4EyFwR0SYYF0hK8xI9z4NIn0=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "03c6e38661c02a27ca006a284813afdc461e9f7e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..57b1142
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,73 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay}:
+  let
+    inherit (nixpkgs) lib;
+
+    systems = [
+      "x86_64-linux"
+      "aarch64-linux"
+      "x86_64-darwin"
+      "aarch64-darwin"
+      "armv7l-linux"
+    ];
+
+    forAllSystems = f: nixpkgs.lib.genAttrs systems (system: let
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [
+          (import rust-overlay)
+        ];
+      };
+
+      rust-bin = rust-overlay.lib.mkRustBin { } pkgs.buildPackages;
+      toolchain = rust-bin.stable.latest.default.override {
+        extensions = [ "rust-src" ];
+      };
+    in f system pkgs toolchain);
+  in {
+    devShell = forAllSystems (system: pkgs: toolchain: pkgs.mkShell {
+      nativeBuildInputs = with pkgs; [
+        toolchain
+        cargo-edit
+      ];
+
+      RUST_SRC_PATH = "${toolchain}/lib/rustlib/src/rust/library";
+    });
+
+    overlays = {
+      default = self.overlays.muscl;
+      roowho2 = final: prev: {
+        inherit (self.packages.${prev.stdenv.hostPlatform.system}) roowho2;
+      };
+    };
+
+    packages = forAllSystems (system: pkgs: _:
+      let
+      cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+      cargoLock = ./Cargo.lock;
+      src = lib.fileset.toSource {
+        root = ./.;
+        fileset = lib.fileset.unions [
+          ./src
+          ./Cargo.toml
+          ./Cargo.lock
+        ];
+      };
+    in {
+      default = self.packages.${system}.roowho2;
+
+      roowho2 = pkgs.callPackage ./nix/default.nix { inherit cargoToml cargoLock src; };
+
+      filteredSource = pkgs.runCommandLocal "filtered-source" { } ''
+        ln -s ${src} $out
+      '';
+    });
+  };
+}
diff --git a/nix/default.nix b/nix/default.nix
new file mode 100644
index 0000000..dadf82a
--- /dev/null
+++ b/nix/default.nix
@@ -0,0 +1,25 @@
+{
+  lib
+, rustPlatform
+, stdenv
+, installShellFiles
+, versionCheckHook
+
+, cargoToml
+, cargoLock
+, src
+}:
+rustPlatform.buildRustPackage {
+  pname = "roowho2";
+  inherit (cargoToml.package) version;
+  inherit src;
+
+  cargoLock.lockFile = cargoLock;
+
+  # buildType = "releaselto";
+
+  meta = with lib; {
+    license = licenses.mit;
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}
diff --git a/src/bin/finger.rs b/src/bin/finger.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/finger.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/roowhod.rs b/src/bin/roowhod.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/roowhod.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/rup.rs b/src/bin/rup.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/rup.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/ruptime.rs b/src/bin/ruptime.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/ruptime.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/rusers.rs b/src/bin/rusers.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/rusers.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/rwall.rs b/src/bin/rwall.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/rwall.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/rwho.rs b/src/bin/rwho.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/rwho.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/bin/write.rs b/src/bin/write.rs
new file mode 100644
index 0000000..16b04d5
--- /dev/null
+++ b/src/bin/write.rs
@@ -0,0 +1,4 @@
+fn main() {
+    unimplemented!()
+}
+
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..febacec
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1 @@
+pub mod proto;
diff --git a/src/proto.rs b/src/proto.rs
new file mode 100644
index 0000000..dee9cb9
--- /dev/null
+++ b/src/proto.rs
@@ -0,0 +1,3 @@
+pub mod finger_protocol;
+pub mod rusers_protocol;
+pub mod write_protocol;
diff --git a/src/proto/finger_protocol.rs b/src/proto/finger_protocol.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/proto/rusers_protocol.rs b/src/proto/rusers_protocol.rs
new file mode 100644
index 0000000..e69de29
diff --git a/src/proto/write_protocol.rs b/src/proto/write_protocol.rs
new file mode 100644
index 0000000..e69de29